Eaton Compressor & Fabrication C-STOV-MC001-E1 User Manual

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Steering Catalog

Steering Control Units Torque Generators Steering Columns

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2 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Literature Referenced in this Catalog:

• Eaton Technical Bulletin 3-401

• Eaton Flow Divider Catalog E-VLFL-MC001-E

• Eaton Relief Valve Catalog 11-510

• Eaton Gear Pumps Series 26 Model 26000 Catalog 11-609

• Eaton Char-Lynn Low Speed High Torque Motors Catalog E-MOLO-MC001-E2

• Vick ers

Screw in Cartridge Values Catalog V-VLOV-MC001-E2

• Vick ers

Proportional Valves Catalog 539

• Vickers Solenoid Operated Directional Valves Catalog GB-C-2015

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EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 3

Table of Contents

Description and Technologies About Power Steering

Description and Advantages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Hydraulic Circuit Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Neutral Circuits

Open Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Open Center Power Beyond . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Closed Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Load Sensing (static and dynamic signal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Work Circuits

Non-Load Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Load Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Steering Units with Integral Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Special Features and Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-18

Manual Steering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2 Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Dual Displacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Eaton Patented Technologies

Q-Amp (Flow Amplification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Wide Angle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Cylinder Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

VersaSteer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

STC Direct Porting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Steering Control Units and Torque Generators

Series 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Series 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Series 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Series 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Series 40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Torque Generator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Steering System Components and System Accessories

Antijerk Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Priority Valves VLC, VLE, VLH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Steering Wheels and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

EH Proportional Steer Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Four Wheel Steer Switching Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Flow Divider Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Brake Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

T Series Hydraulic Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Sizing and Application

Ackermann Type Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Articulated Type Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Articulated Vehicle Steering Analysis Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Articulated Vehicle Steering Analysis Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Information contained in this publication is accurate as of the publication date and is subject to change without notice. Performance values are typical values. Customers are responsible for selecting products for their applications using normal engineering methods.

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4 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Description and Advantages

Steering Control Units

The Char-Lynn®steering control unit (SCU) is fully fluid linked. This means there is no mechanical connection between the steering unit, the pump and the steering cylinders. The unit consists of a manually operated directional control servo valve and feedback meter element in a single body. It is used principally for fluid linked power steering systems but it can be used for some servo-type applications or any application where visual positioning is required. The close coupled, rotary action valve performs all necessary fluid directing functions with a small number of moving parts. The manually actuated valve is coupled with the mechanical drive to the meter gear. The control is lubricated and protected by the power fluid in the system and can operate in many environments.

Char-Lynn power steering control units offer the following advantages:

• Minimizes steering linkage—reduces cost, provides flexibility in design.

• Provides complete isolation of load forces from the control station—provides operator comfort.

• Provides continuous, unlimited control action with very low input torque.

• Provides a wide selection of control circuits and meter sizes.

• Can work with many kinds of power steering pumps or fluid supply.

SERIES 5 (291-XXXX-XXX, 292-XXXX-XXX, 293-XXXX-XXX, 294-XXXX-XXX)

Displacement 31.5 - 146 cm3/r 1.92 - 8.9 in3/r Flow 11 - 19 l/min 3 - 5 GPM Pressure 140 bar 2030 PSI

SERIES 10 (200-XXXX-XXX, 220-XXXX-XXX)

Displacement 58.7 - 739 cm3/r 3.58 - 45.1 in3/r Flow 11 - 76 l/min 3 - 20 GPM Pressure 275 bar 4000 PSI

SERIES 20 (236-XXXX-XXX)

Displacement 60 - 985 cm3/r 3.6 - 60 in3/r Flow 38 - 114 l/min 10 - 30 GPM Pressure 241 bar 3500 PSI

SERIES 25 (251-XXXX-XXX, 252-XXXX-XXX, 253-XXXX-XXX)

Displacement 490 - 1230 cm3/r 30 - 75 in3/r Flow 95 - 151 l/min 25 - 40 GPM Pressure 241 bar 3500 PSI

SERIES 40 (281-XXXX-XXX, 282-XXXX-XXX, 283-XXXX-XXX)*

Displacement 1230 - 3030 cm3/r 75 - 185 in3/r Flow 151 - 227 l/min 40 - 60 GPM Pressure 241 bar 3500 PSI

* For all other product numbers consult steering website.

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EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 5

Description and Advantages

Torque Generator

Char-Lynn torque generators have been completely redesigned to meet the needs of the changing marketplace. These torque generators have served the industry well, providing:

• Power assist for vehicle steering

• Power assist on gates and valves, eliminating the large hand wheels

• Powerful rotary motion with effortless manual rotary input on numerous other applications

Today’s market includes power steering on electric lift trucks. These new torque generators have been designed with features that greatly improve the operator’s comfort as well as the vehicle’s performance.

Use the Torque Generator as rotary power assist for:

• Large indexing tables

• Manually operated gates and valves

• Manual positioning devices

• Mechanical steering systems

• T urntables

SERIES 217, 227

Displacement 76 - 160 cm3/r 4.7 - 9.6 in3/r Flow 15 l/min 4 GPM Pressure 69 and 172 bar 1000 and 2500 PSI

STEERING COLUMNS (204-XXXX-XXX)

Jacket Length 56 - 836 mm 2.2 - 33 inch Horn Wire with and without with and without Upper Ends 10 Upper End Types 10 Upper End Types

Customized Steering Columns

Char-Lynn columns can be custom built to your exact specifications. The column and mounting flange is of a sturdy single weldment design. These columns have high thrust and side load capacity with low shaft torsional friction. A tilt column is also available.

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6 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Hydraulic Circuit Explanation

Neutral Circuits: Open Center and Open Center Power Beyond

Open Center

• Simplest, most economical system

• Uses a fixed displacement pump

• In neutral position pump and tank are connected

• Most suitable on smaller type vehicles

Open Center Power Beyond

The power beyond steering control unit supplies steering and auxiliary valve functions. The power beyond unit is used on medium pressure, open center (fixed displacement pump) systems.

When not steering, the power beyond unit directs all inlet flow to the auxiliary circuit. However once steering is initiated, part of the auxiliary flow is diverted to steering. Since steering has priority, all flow, if required, will be diverted to steering. The tank port of the steering unit has flow only when steering is operated. Thus, flow out of the auxiliary (“PB”) port and the tank port will fluctuate or stop depending on steering input.

The following special considerations should be addressed when applying power beyond steering:

• Auxiliary valves (connected to PB) must be open center type. Slight bump or kick may be felt in steering wheel when auxiliary functions are activated during steering operations.

• Pump flow not used for steering is available at power beyond (PB) outlet, except at steering stops where total pump flow goes over the system relief valve. Avoid auxiliary functions that require constant flow while steering.

• Flow is only directed to the tank port when steering is operated. Avoid systems where return flow from tank port is used for auxiliary functions.

• Inlet pressure to the steering unit will be the higher of steering system pressure or auxiliary valve pressure.

• Generally avoid systems where heavy use of auxiliary functions occur while steering.

Applications

• Lawn and Garden Equipment

• Utility Vehicles

Gerotor

Fixed Displacement Pump

To Auxilliary Circuit Open Center Valves

Fixed Displacement Pump

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EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 7

Hydraulic Circuit Explanation

Neutral Circuits: Closed Center

Closed Center

• Uses a pressure compensated variable displacement pump

• In neutral position pump and tank are disconnected

• Most suitable on large construction equipment

Valve Option A

Closed Center System

Pressure Compensated Pump

Closed Center with Neutral Bleed

Neutral Bleed Feature

Closed Center Steering Control Units are available with and without neutral bleed feature. Most applications may not require the bleed feature, however, the maximum temperature differential between components within the steering circuit must not exceed specification (50° F or 28° C). Order unit with the bleed feature if the temperature differential may exceed this limit. The neutral bleed feature allows a small flow of fluid to pass through the unit when in neutral to reduce the thermal diff erential.

Typical applications where neutral bleed is required are:

• Remote steering position from power source.

• Extended engine idle operation when vehicle is parked.

• High duty cycle operation sharing a common reservoir with the steering circuit.

Applications

• Construction Industry

Gerotor Metering Mechanism

with Neutral Bleed

Direct Mechanical Link

Steering Control Unit

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8 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Hydraulic Circuit Explanation

Neutral Circuits: Load Sensing

Load Sensing Circuits

Char-Lynn load sensing power steering uses conventional or load sensing power supplies to achieve load sensing steering. The use of a load sensing steering unit and a priority valve in a normal power steering circuit offers the following advantages:

• Provides smooth pressure compensated steering because load variations in the steering circuit do not affect axle response or maximum steering rate.

• Provides true power beyond system capability by splitting the system into two independent circuits. Pressure transients are isolated in each circuit. Only the flow required by the steering maneuver goes to the steering circuit. Flow not required for steering is available for use in the auxiliary circuits.

• Provides reliable operation because the steering circuit always has flow and pressure priority.

Char-Lynn load sensing steering control units and priority valves can be used with open center , closed center or load sensing systems. Use in an open center system with a fixed displacement pump or a closed center system with a pressure compensated pump, offers many of the features of a load sensing system. Excess flow is available f or auxiliary circuits.

Listed below are the components of a typical load sensing control circuit and a brief application description.

Pump—May be fixed displacement, pressure compensated, or flow and pressure compensated design.

Prior ity V alve—Sized for design pressure drop at maximum pump output flow rate and priority flow requirements. The minimum control pressure must assure adequate steering flow rate and must be matched with the steering control unit.

A dynamic signal priority valve must be used with a dynamic signal steering control unit.

Steering Control Unit—

Designed for specific rated flows and control pressures. It must be matched with a control pressure in the priority valve to obtain maximum steering rates. Higher flow rates require higher control pressures. Neutral internal bleed assures component temperature equalization.

LS Line—A LS line is always needed to sense pressure downstream from the variable control orifice in the steering control unit. This is balanced by an internal passage to the opposite side of the priority control spool.

The total system performance depends on careful consideration of the control pressure chosen and pressure drop in the CF line.

Steering Relief Valve—

Must be factory set at least 10 bar [145 PSl] above the maximum steering cylinder pressure requirement. Most of the flow will be directed to the auxiliary circuit (EF) when the relief setting is exceeded.

System Main Relief Valve—A pressure relief

valve for the auxiliary circuit and/or a main safety valve for the protection of the pump is recommended and sized for the maximum pump output flow rate. If a main relief valve is used, it must be set above the priority circuit steering relief valve pressure setting.

LS— Load Sensing DS— Dynamic Signal PP— Pilot Pressure CF— Control Flow EF — Excess Flow

Manual Input

Filter

Steering Cylinder

DSLS

Main Relief

Pump Prime Mover

Load Sensing Steering Unit

Priority Valve

Dynamic Signal

High Pressure Carryover

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EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 9

Hydraulic Circuit Explanation

Neutral Circuits: Load Sensing

Dynamic Signal— Open Center Pump

Dynamic Signal— Load Sensing Pump

Load Sensing Circuits— Signal Systems

Two types of load sensing signal systems are available—Dynamic and Static.

Dynamic Signal—Used for more difficult applications. The dynamic signal systems offer the following benefits:

• Faster steering response.

• Improved cold weather start-up performance.

• Increased flexibility to solve problems related to system performance and stability.

Dynamic Signal

Load Sensing (Dynamic

Signal) Steering

Control Unit (non-load

LS P

T LS CF EF

Fixed Displacement Pump

Load Sensing Steering System with Fixed Displacement Pump (Open Center Circuit)

reaction)

High Pressure Carryover to Auxiliary Circuit with Open Center Valve(s)

Priority Valve (Dynamic Signal)

Dynamic Signal

Shuttle Valve

Load Sensing (Dynamic Signal) Steering Control Unit (non-load

TLSP

LS CFEF

Pressure and Flow Compensated Pump

Load Sensing Steering System with Pressure and Flow Compensated Pump (Closed Center, Load Sensing Circuit)

reaction)

Auxiliary Circuit with Load Sensing Valve(s)

Priority Valve (Dynamic Signal)

Pilot Signal from Auxiliary Circuit

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10 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Static Signal— Open Center Pump

Static Signal—Used for

conventional applications where response or circuit stability is not a problem. The load sensing pilot line should not exceed 2 meters [6 feet] in length.

Hydraulic Circuit Explanation

Neutral Circuits: Load Sensing

Static Signal

Load Sensing (Static

Signal) Steering

Control Unit (non-load

TLS P

LS CF EF

Fixed Displacement Pump

Load Sensing Steering System with Fixed Displacement Pump (Open Center Circuit)

reaction)

Auxiliary Circuit with Open Center Valve(s)

Priority Valve (Static Signal)

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EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 11

Hydraulic Circuit Explanation

Work Circuits: Non-Load Reaction and Load Reaction

Non-Load Reaction

A non-load reaction steering unit blocks the cylinder ports in neutral, holding the axle position whenever the operator releases the steering wheel.

Load Reaction

A load reaction steering unit couples the cylinder ports internally (in the neutral position) with the meter gear set. Axle forces are then allowed to return the steering wheel to its approximate original position. Comparable to automobile steering, gradually releasing the wheel mid turn will allow the steering wheel to spin back as the vehicle straightens.

The cylinder system used with load reaction units

must have equal oil volume displaced in both

directions. The cylinders should be a parallel pair (as shown) or one double rod end unit. Do not use with a

single unequal area cylinder system.

Gerotor Metering Mechanism

Direct Mechanical Link

Gerotor Metering Mechanism

Closed Center System Non-Load Reaction Circuit

Steering Control Unit

Pressure and Flow Compensated Pump

Fixed Displacement Pump

Direct Mechanical Link

Steering Control Unit

Open Center System Load Reaction Circuit

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12 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Units with Integral Valves

Integral valves are available for the Char-Lynn steering control unit. Included are: Inlet Relief Valve, Cylinder Port Shock Valves, LS-Relief Valve, and Anti-Cavitation Valves for cylinder ports. In addition, a Manual Steering Check V alv e for limited manual steering is included.

The integral valves eliminate the need for a separate valve block, and provides versatility to meet any steering circuit standard.

Valve Description:

1 Anti-cavitation check

valve for cylinder ports—

(R & L) protects steering circuit against vacuum (cavitation) conditions.

2 Cylinder Port Relief

Valves—(R & L) protects

hoses against pressure surge created by ground forces on the steered axle.

3 Manual Steering Check

Valve—converts unit to a

hand operated pump for limited manual steering. Included in all units except Series 20, 25, and 40.**

4 Inlet Relief Valve—limits

maximum pressure drop across the steering unit protecting the steering circuit.

5 Inlet Check Valve—

prevents oil from returning through the steering unit when pressure on the cylinder side is greater than pressure on the inlet side to prevent steering wheel kick.

6 LS-Relief Valve—Limits

maximum pressure in the steering circuit (LS units only)

**Steering units with displacements larger than

185 cm

/r [11.3 in3/r] may require a separate

power source for limited operation.

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EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 13

Special Features and Application

Manual Steering

96 [5.9]

74 [4.5]

59 [3.6]

46 [2.8]

185 [11.3]

146 [8.9]

160 [9.7]

230 [14.1]

295 [17.9]

370 [22.6]

120 [7.3]

Description

The steering control unit can provide steering flow when the pump or engine fails. It will pump oil through the meter (gerotor) as the operator applies input or torque to the steering wheel which provides limited manual steering.

This feature is available in all steering models except for Series 25 and 40.

Use of Graph

1. Determine steering work port pressure required to preform the desired steering maneuver from vehicle test data. This defines the approximate manual steering pressure level required. Find this value on the vertical axis and construct a horizontal line on the graph.

2. Find the input torque limit

on the horizontal axis. Follow this vertically until it crosses the required pressure line of step 1.

3. The maximum steering

unit displacement is identified by the first angled line to the left of this intersection.

[PSI]

[1000]

[ 800]

[ 600]

[ 400]

[ 200]

30-60 RPM

27 [20]

1) Maximum flow less than 7,6 l/min [2 GPM].

2) Actual steering pressures required and manual steering capabilities must be verified with vehicle testing.

The above curves are intended as a design guide only.

10-15 RPM

[2.8]

[4.5]

54 [40]

Manual Input Torque Nm [lb-ft]

[3.6]

81 [60]

1-3 RPM

96 [5.9]

[5.9]

185

[11.3]

108 [80]

120

[7.3]

295

[17.9]

370

[22.6]

Displacement

/r [in3/r]

146

[8.9]

160

160 [9.7]

[9.7]

230

[14.1]

136 [100]

bar

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14 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Description

Eaton’s 2-Speed technology offers two operatorselectable metered modes at any time, with the touch of a button or the flip of a switch, and provides the operator flexibility to significantly improve the overall steering experience. 2-Speed technology is available on the Series 10 Steering Control Unit (SCU).

Dual Steering Modes

Typically, the gerotor between the SCU housing and the shift valve is the smaller gerotor (first gerotor). The shift valve is activated by the operator, which allows or prevents flow to the second gerotor. A separate solenoid valve provides the pressure pilot signal to shift the aforementioned valve. The OEM will define and provide the operator switch to activate the solenoid valve.

Metered Steering Mode 1 – The steering unit operates

the same as a traditional hydrostatic steering control unit. Steering (flow) is a function of steering wheel rotations (rpm). Metered (gerotor) steering provides precise, responsive, and smooth steering. All the flow is metered by the first gerotor, resulting in a greater number of turns lock-to-lock. In case of pressure loss, the shift valve automatically prevents flow to the second gerotor and emergency steering is available via the first gerotor.

Metered Steering Mode 2 –The steering unit operates

the same as a traditional hydrostatic steering control unit, except the flow is metered for a combined displacement of two gerotors. As with Mode 1, steering (flow) is a function of steering wheel rotations. As the total displacement per rotation is the sum of the two gerotor displacements, the number of turns lock-to-lock may be significantly decreased. Operator effort is greatly reduced during the work cycle. The number of turns lock-to-lock could go down to 0.5, where the ratio of the two gerotor displacements could vary from 1:1 to as high as 5:1, providing great flexibility in the design.

Benefits

• Manual steering capability in unpowered mode (“emergency steering”)

• Steering flow is always proportional to steering speed

• Allows for excellent roadability and operator selectable quick-steer for work cycles

Features

• Open Center, Load Sense

• All Integral Valves

• Wide Angle

• Max System pressure: 241 Bar [3500 psi]

Applications

• All Ackerman Steering

• T ractors, T elehandlers, Sweepers, Forestry Equipment, Backhoes, Loaders

• Sprayers, Combines, Motor Graders

Special Features and Application

2-Speed

Page 15

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 15

Special Features and Application

Dual Displacement

Description

The dual displacement steering control unit allows manufacturers of off road vehicles to retain manual steering capabilities while reducing the number of components in their system. By using two displacements in one unit we offer a better solution to manually steer a vehicle in an unpowered mode without the need of a back-up power system— resulting in a more economical machine.

The dual displacement steering unit uses two gerotors and a pressure controlled logic valve. The logic valve switches bet ween two displacements, one displacement for manual steering and the total of both displacements for powered operation. The logic valve is spring returned to the smaller manual displacement when inlet pressure falls below 8 bar [120 psi]. Above 8 bar [120 psi] the logic valve connects both gerotors to provide full powered displacement.

Manual steering capabilities in unpowered mode

• Eliminates the need of a back-up emergency system.

• Engages the small displacement in an unpowered mode and allows manual steering.

• Allows vehicles to meet ISO/TUV road regulations without the need of the currently used emergency system.

Performance in powered mode

• Both gerotors are engaged to steer the vehicle.

• Same performance as other Char-Lynn steering units.

Additional Features

• Steering circuit: Load Sensing Dynamic Signal

• Max. system pressure: 241 bar [3500 psi].

• Valve options and other features: same as those available on Series 10 (single displacement) units

DISPLACEMENT CHART:

Gerotor 1 Gerotor 1 and 2 Gerotor 1 Gerotor 1 and 2

Manual displ. Powered displ. Manual displ. Powered displ.

in3/rev in3/rev cm3/rev cm3/rev

3.6 9.5 60 156

3.6 10.9 60 179

3.6 12.5 60 205

3.6 13.3 60 218

3.6 14.9 60 244

For any other displacement please see your Eaton Representative.

Powered Mode

Manual Mode

Added Gerotor

Logic Valve

Manual Gerotor

TLS P

Manual 60 cm Powered 244 cm

7.5

7.0

6.5

6.0

5.5

5.0

4.5

4.0

3.5

3.0

2.5

Steering Flow GPM

2.0

1.5

1.0

0.5 0

Flow vs RPM (for each operating mode)

/r [3.6 in3/r]

/r [14.9 in3/r]

Powered Mode

Manual Mode

30 45 60 75 90 60 105 120

015

Input Speed RPM

30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0

Steering Flow l/min

Page 16

• Manual Steering Steering a vehicle with loss of engine power may not be possible with a large displacement steering control unit (SCU). Q-Amp with manual feature has the smaller displacement required for manual steering and has the additional flow requirement of the larger displacement SCU for power steering.

• Single Cylinder

(Unequal area)

On vehicles with one single unequal area cylinder the steering wheel turns lock to lock are more in one direction than the other. When extending the rod one would get more turns than when retracting it. A different Q-Amp ratio while turning in one direction versus the other can be used to give an equal number of turns lock to lock in each direction.

Eaton Patented Technologies

Q-Amp (Flow Amplification) for Load Sensing Circuits

Description

Q-Amp steering units have built in variable orifices that provide flow directly to the cylinder without going through the gerotor section. The orifices do not open until after the gerotor begins to rotate and then gradually open until the desired flow is achieved which is

proportional to the flow going through the gerotor. A typical Q-Amp unit has a ratio of 1.6 : 1 which means the flow of the cylinder is

1.6 times the flow going through the gerotor when turning the steering wheel at medium to fast speeds. (See model code for available ratios.)

Covered by one or more of the following U.S. and foreign Patents: 4759182, 4862690,

4781219. Unequal area Q-Amp.

Q-Amp Steering Control Unit—Slow Turn

Features

• Variable Ratio

Q-Amp Steering Control Unit—Fast Turn

Conventional Steering Control Unit

16 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

2:1

1.6:1

Ratio

1:1

10 20 30 40 50

6 5 4

Turns

Lock to

Lock

20 30 40 50

60 70 80 90 100

RPM

60 70 80 90 100

RPM

Fast Turn

Pump

Fast Turn

Pump

Slow

Turn

Pump

Rotary Valve

No Flow

Rotary Valve

Meter

Cylinder

Meter

Cylinder

Meter

Cylinder

Page 17

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 17

Eaton Patented Technologies

Q-Amp (Flow Amplification) for Load Sensing Circuits

Applications

Articulated vehicles such as wheel loaders, log skidders, scrapers, trucks, and similar vehicles can benefit from this feature.

While roading, a slow movement of the steering wheel (input speed), will not overcorrect steering. Increasing input speed will produce the additional steering flow required to quickly change the vehicle’s direction.

For example, operating log skidders in the woods requires very quick steering. This same log skidder on the road would be extremely difficult to steer a straight normal course. The variable ratio feature provides good steering in both conditions.

Combines, row crop tractors, and large articulated agricultural tractors also can benefit from this feature when traveling down a field. It will be easier to follow rows or furrows, and still be able to make fast turns at the end of the rows.

Variable Ratio

• Wheel Loaders

• Scrapers

• Articulated AG Tractors

• Articulated Dumpers

• Mine T ruc ks

• Forestry Equipment

• Rough T errain Lift T r ucks

Variable Ratio with Manual Steering

• AG T ractors

• Small Wheel Loaders

• Rubber Tired Excavators

• Sprayers

• Site Handlers

• Graders

• Combines

Page 18

18 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Eaton Patented Technologies

Wide Angle

Description

Steering units with wide angle features have been developed to significantly reduce or eliminate the jerky motion of vehicles with articulated steering systems. This has been accomplished by increasing the maximum deflection of the spool relative to the sleeve. Increasing the deflection reduces the gain. This in turn reduces acceleration and jerk levels and provides overall smoother vehicle performance. The steering still responds fast enough so the operator does not notice the reduced gain.

Benefits

• Minimizes jerking motion on medium and large articulated vehicles.

• Jerk reducing valves and accumulators can be eliminated on most vehicles.

• Avaliable on Series 10, Series 20 (standard), and Series 25.

• Eliminates need for cushion valves

Applications

• Articulated Vehicles

Wide Angle Steering Control Units Patent No. 5080135

These graphs show a computer simulation of the jerk levels and have been verified by actual vehicle tests.

Flow

60 RPM 125 ms

Wide Angle

Standard

Time

Jerk (g/sec)

8 4 0

-4

-8 012346

Steering Input (RPM)

60 RPM CCW

Time (Seconds)

Standard Steering on a 25 Ton Loader

Computer Simulation

60 RPM CW

Jerk (g/sec)

8 4 0

-4

-8 012346

Steering Input (RPM)

60 RPM CW

Jerk (g/sec)

60 RPM CCW

Time (Seconds)

Wide Angle Steering on a 25 Ton Loader

Page 19

Eaton Patented Technologies

Cylinder Damping

Description

Cylinder damping can help smooth the steering action of large articulated vehicles such as loaders, scrapers, and skidders. These vehicles have overhanging weight with high inertial loads. This energy is dissipated by the cylinder damping orifices which bleed a small amount of flow from the cylinder port to tank.

Cylinder Damping has 3 different levels of application. The number of levels equal to the number of Cylinder Damping (CD) orifices. This technology is available on Series 10, Series 20, Series 25, and Series 40. Not all SCUs come with all 3 levels.

Features

Three levels engineered to fit your application.

Benefits

• Reduces jerking motion on medium and large articulated vehicles.

• Available on the following steering control units (Series 10, 20, 25, 40).

• Damps or stabilizes unstable systems.

Applications— Large Articulated Vehicles

• Wheel Loaders

• Skidders

• Scrapers

Flow Amplification without Cylinder Damping

Flow Amplification with Cylinder Damping

Steering Control Units with Cylinder Damping Patent No. 5080135

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 19

Page 20

20 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Eaton Patented Technologies

VersaSteer

Description

Eaton’s patented VersaSteer™ technology offers operator-selectable Metered or Quick Steering modes at any time, with the touch of a button or the flip of a switch, and provides the operator flexibility to significantly improve the overall steering experience.

Dual Steering Modes

Metered Steering –The steering unit operates the same as a traditional hydrostatic steering control unit. Steering (flow) is a function of steering wheel rotations (rpm). Metered (gerotor) steering provides precise, responsive, and smooth steering.

Quick Steering –

Gerotorless (quick) steering provides a much different effect, enabling the operator to put the vehicle in full lock while only turning the steering wheel a few degrees. This is achieved by hydraulically blocking the flow of oil to the gerotor with a shift valve. Full steering flow can be obtained by deflecting the steering wheel ±45° for a Series 10 and ±50° for a Series 20. Operator effort is greatly reduced during the work cycle.

Benefits

• Provides steering system cost savings by eliminating the need for a separate joystick

• Available on Load Sense steering systems

• Compatible with Integral Valv es, Bolt-On Priority Valv es, Q-Amp and Cylinder Damping

• Emergency manual steering capability

• Minor size increase – can retrofit to existing vehicles

• Smoother steering with Eaton Patented W ide Angle technology.

Features

• Dual steering modes in one integrated Steering Control Unit (SCU)

• High pressure rating and flow capabilities

• Compatible with current steering options

• Easily retrofit to existing vehicles

• Proven base technology

• Easy one-touch switch (OEM defined)

VersaSteer System Components

• Steering Control Unit

• Solenoid Shift Valve

• Four –04 hoses

• Electric Switch

Series 10 VersaSteer

Traditional Metered Steering Series 10 Quick Steering

Series 20 VersaSteer

SPECIFICATIONS

1. System Pressure Rating a. 241 Bar [3500 psi] - Series 10 b. 241 Bar [3500 psi] - Series 20

2. Back Pressure Rating - 21 Bar [305 psi]

3. Flow Rating a. 15 gpm - Series 10 b. 25 gpm - Series 20

VersaSteer is covered under US Patent No. 6,318,078

Page 21

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 21

Eaton Patented Technologies

STC Direct Porting

With the Snap-To-Connect (STC) Direct Porting option, the fitting profile is machined into the SCU housing, eliminating the need for extra STC fittings. This revolutionary and patented porting technology provides leak-proof sealing and has operating pressure capability exceeding 4500PSI (310bar).

STC Direct Porting is available with Series 5 and Series 10 Steering Control Units.

Benefits

• STC Direct Ports provide a great opportunity for significant cost savings compared to threaded fittings

• Eliminates the need for assembly tools during installation

• Eliminates installation variability

• Improves ergonomics reduces installer effort to connect

• Improves serviceability

• High quality, leak-proof seal

• Eliminates connector leakage

• Compact design and overall lighter weight

Page 22

22 EATON Steering Catalog C-STOV-MC0 01-E1 May 2006

Steering Control Units—Series 5

Product Description

The new Series 5 steering control units (SCU) are exciting new products designed for low flow, low pressure applications.

The Series 5 units are available in two compact designs:

Option 1:

Square Housing (Mount) Unit with Side Ports

Option 2:

Round Housing (Mount) Unit with End Ports

In addition to the installation flexibility provided by the two options above, this new family of products has bestin-class steering feel and provides crisp centering. These units also have better efficiency (lower pressure drop) than competitive units.

Power Beyond Models— Optional power beyond steering control units supply steering and flow to auxiliary valve functions. The power beyond unit is used in open center (fixed displacement pump) systems in the medium pressure range. When not steering, the power beyond unit directs all inlet flow to the excess flow port (power beyond) for use in the auxiliary circuit. Once steering is initiated, and since steering has priority, inlet flow will be diverted to the steering circuit as required. Flow out the excess flow port (power beyond) and tank port will vary or stop depending upon the steering requirement. The tank port of the steering unit has flow only when steering is operating.

SPECIFICATIONS

Max. System Pressure 140 bar [2030 PSI] Max. Back Pressure 21 bar [ 300 PSI] Max. Flow 19 l/min [5 GPM] Max. Differential

Between Steering Unit 28°C

and System Temperature 50°F Max. System Operating Temperature 93°C [200° F] Input Torque

Powered -Standard 1,7 - 2,8 Nm @ 6,9 bar tank pressure

[15 - 25 lb-in @ 100 PSI tank pressure]

Low 1,1 - 2,0 Nm @ 6,9 bar tank pressure

[10 - 17.5 lb-in @ 100 PSI tank pressure]

Max. Non Powered 81,4 Nm [60 lb-ft] Fluid Petroleum Based Fluids Recommended Filtration ISO 18/13 cleanliness level Port Options 9/16-18 SAE O-ring

– 06 STC

3/8 BSP Straight thread ports Check Valve for Manual Steering Yes Optional Relief Valve Settings

bar [PSI] 40 [ 580]

50 [ 725]

63 [ 914]

70 [1015]

80 [1160]

90 [1305]

100 [1450]

125 [1812]

Option 1: Square Housing with Side Ports

refer to Model Code, page 23

Option 2: Round Housing with End Ports

refer to Model Code, page 24

Features

• Open Center

• Load Sensing

• Open Center Power Beyond

• Integral Column

• Manual Steering Check V alv e

• Inlet Relief Valve

• Load Sense Relief Valve

• Cylinder Relief Valve

• Anti-Cavitation Valve

Applications

• Lawn and Garden Equipment

• T urf Equipment

• Golf Course Maintenance Equipment

• Lift Trucks

• Compact Utility Tractors

Page 23

EATON Steering Catalog C-STOV-MC001-E1 May 2006 23

Steering Control Units—Series 5

Model Code – Ordering Information

The following 30-digit coding system has been developed to identify all of the configuration options for the Series 5 steering control units. Use this model code to specify a unit with the desired features. All 30-digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

Nos Feature Code Description Nos Feature Code Description

1,2,3 Product Series ABR Series 5 Steering Control Unit 4 Nominal Flow 1 11 l/min [3 GPM]

Rating B 19 l/min [5 GPM]

5 Inlet Pressure C 140 bar [2030 PSI]

Rating

6 Tank Pressure A 10 bar [150 PSI]

Rating B 21 bar [30 0 PSI]

7-8 Displacement 35 31.5 cm3/r [1.92 in3/r]

37 39.5 cm3/r [2.41 in3/r] 39 50.8 cm3/r [3.10 in3/r] 41 63.1 cm3/r [3.85 in3/r] 43 73.8 cm3/r [4.50 in3/r] 46 100 cm3/r [6.10 in3/r]

48 120 cm3/r [7.33 in3/r]

9 Flow Amplification 0 None 10 Neutral Circuit A Open Center

B Open Center, Power Beyond

F Load Sensing, Dynamic signal

11 Load Circuit A Non-Load Reaction 12,13 Valve Options 01 Manual Steering Check Valve

04 Inlet Check Valve, Manual

Steering Check Valve

05 Inlet Relief Valve,

Manual Steering Check Valve

12 Cylinder Relief Valve,

Anti-Cavitation Valve, Inlet Relief Valve, Inlet Check Valve, Manual Steering Check Valve.

13 Cylinder Relief Valve,

Anti-cavitation Valve, Inlet Check Valve, Load Sensing Relief Valve, Manual Steering Check Valve

14,15 Integral Inlet 0 0 None

Relief Valve 18 40 bar [580 PSI] Setting 1J 50 bar [725 PSI]

1Z 63 bar [914 PSI]

26 70 bar [1015 PSI]

2G 80 bar [1160 PSI]

2T 90 bar [1305 PSI]

34 100 bar [1450 PSI]

3W 125 bar [1812 PSI]

16,17 Cylinder Relief 00 None

Setting 37 103 bar [1490 PSI]

42 130 bar [1890 PSI]

55 185 bar [2680 PSI]

68 200 bar [2900 PSI]

18,1 9,20,21 Ports and 4AAN Square 4 x 9/16 SAE Ports,

Mounting Threads M10 x 1,5 Column Mounting

Threads (Use with Open Center)

4AKN Square 5 x 9/16 SAE Ports,

M10 x 1,5 Column Mounting Threads (Use with Excess Flow)

4AEN Square 5 x 9/16 SAE Ports,

M10 x 1,5 Column Mounting Threads (Use with Load Sense)

UAAN Square 4 x -06 STC Direct

Ports, M10 x 1,5 Column Mounting Threads (Use with Open Center)

UBNN Square 5 x -06 STC Direct

Ports, M10 x 1,5 Column Mounting Threads (Use with Excess Flow)

UBPN Square 5 x -06 STC Direct

Ports, M10 x 1,5 Column Mounting Threads (Use with Load Sense)

YAAN Square 4 x G .375 BSP Striaght

Thd. Ports, M10 x 1,5 Column Mounting Threads (Use with Open Center)

YBRN Square 5 x G .375 BSP Striaght

Thd. Ports, M10 x 1,5 Column Mounting Threads (Use with Load Sense)

22 Input Torque 1 Low*

3 Standard

23 Fluid Type A See Eaton Tec hnical

Bulletin 3-401

24 Special Application 0 None 25,26 Special Feature AA None 27 Paint 1 Black Primer 28 Identification 0 Eaton Product Number on

Nameplate

29 Mechanical A Tapered 17.919mm (.7055in)

Interface diameter, .083:1 and serrated

17.5 (.688) diameter, 40 tooth,

M16x1.5-6g, Extension length

65.02 (2.56)

D Internal involute spline12 tooth,

16/32 DP, 30 degree PA

30 Eaton Assigned B Assigned Design Code

Design Code

* All low torque units need approval from an Eaton Steering Engineer.

Square Housing with Side Ports - Option 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A B R 0 A A 0 1 0 B

C A

Page 24

24 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Steering Control Units—Series 5

Model Code – Ordering Information

Nos Feature Code Description Nos Feature Code Description

1,2,3 Product Series ABR Series 5 Steering Control Unit 4 Nominal Flow 1 11 l/min [3 GPM]

Rating B 19 l/min [5 GPM]

5 Inlet Pressure

Rating C 140 bar [2030 PSI]

6 Tank Pressure A 10 bar [150 PSI]

Rating

7-8 Displacement 35 31.5 cm3/r [1.92 in3/r]

37 39.5 cm3/r [2.41 in3/r] 39 50.8 cm3/r [3.10 in3/r] 41 63.1 cm3/r [3.85 in3/r] 43 73.8 cm3/r [4.50 in3/r] 46 100 cm3/r [6.10 in3/r]

48 120 cm3/r [7.33 in3/r]

9 Flow Amplification 0 None 10 Neutral Circuit A Open Center

B Open Center, Power Beyond

C Closed Center

F Load Sensing, Dynamic signal

11 Load Circuit A Non-Load Reaction 12,13 Valve Options 01 Manual Steering Check Valve

04 Inlet Check Valve, Manual

Steering Check Valve

05 Inlet Relief Valve,

Manual Steering Check Valve

12 Cylinder Relief Valve,

Anti-cavitation Valve, Inlet Relief Valve, Inlet Check Valve, Manual Steering Check Valve.

14,15 Integral Inlet 0 0 None

Relief Valve 18 40 bar [580 PSI] Setting 1J 50 bar [725 PSI]

1Z 63 bar [914 PSI]

26 70 bar [1020 PSI]

2G 80 bar [1160 PSI]

2T 90 bar [1310 PSI]

34 100 bar [1450 PSI]

3W 125 bar [1812 PSI]

4C 140 Bar [2030 PSI]

16,17 Cylinder Relief 00 None

Setting

18,1 9,20,21 Ports and VAAH Round 4 x 9/16 SAE Ports,

Mounting Threads M6 x 1,0 Column Mounting

Threads (Use with Open Center)

VAKH Round 5 x 9/16 SAE Ports,

M6 x 1,0 Column Mounting Threads (Use with Excess Flow)

VAEH Round 5 x 9/16 SAE Ports,

M6 x 1,0 Column Mounting

WAAH Round 4 x -06 STC Direct Ports,

M6 x 1,0 Column Mounting Threads (Use with Open Center)

WBNH Round 5 x -06 STC Direct Ports,

M6 x 1,0 Column Mounting Threads (Use with Excess Flow)

WBPH Round 5 x -06 STC Direct Ports,

M6 x 1,0 Column Mounting Threads (Use with Load Sense)

22 Input Torque 1 Low*

3 Standard

23 Fluid Type A See Eaton Tec hnical

Bulletin 3-401

24 Special Application 0 None 25,26 Special Feature AA None 27 Paint 1 Black Primer 28 Identification 0 Eaton Product Number on

Nameplate

29 Mechanical A Tapered 17.919mm (.7055in)

Interface diameter, .083:1 and serrated

17.5 (.688) diameter, 40 tooth,

M16x1.5-6g, Extension length

65.02 (2.56)

D Internal involute spline12 tooth,

16/32 DP, 30 degree PA

30 Eaton Assigned B Assigned Design Code

Design Code

* All low torque units need approval from an Eaton Steering Engineer. ** Plug-O ports rated to 103 bar [1500PSI]

Round Housing with End Ports - Option 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A B R 0 A 0 0 A 0 1 0 B

Page 25

Option 1: Square Housing with Side Ports

refer to Model Code, page 23

Steering Control Units—Series 5

Installation Drawing

Relief Valve/Check or Manual Check

Relief Valve/Check Manual Check

View of Gerotor Section

Gerotor Seal

Cylinder Relief Valve Anti-Cavitation Valve

Inlet Check Valve

Housing

PinBearing, Ball Drive Spacer Plate End Cap

O-ring

Bearing Race

Shaft Seal

Dust Seal

Centering Springs Sleeve Spool Gerotor

Sectional Drawing

EATON Steering Catalog C-STOV-MC001-E1 May 2006 25

Side View

Displacement Dim. A Max.

Code cm3/r [in3/r] mm [inch]

35 31.5 [1.92] 123.4 [4.86] 37 39.5 [2.41] 125.2 [4.93] 39 50.8 [3.10] 124.2 [4.89] 41 63.1 [3.85] 126.2 [4.97] 43 73.8 [4.50] 128.0 [5.04] 46 100.0 [6.10] 132.3 [5.21] 48 120.0 [7.33] 135.4 [5.33]

4X M10 x 1.5-6H 15,2 [.60] Min

44,4 [1.75] Dia.

Involute Spline 12 Tooth 16/32 D.P. 30° P.A. PER SPC DS-023-2

48.26+0.13

29,18

58.37

[1.149]

[1.900+.005]

[2.298]

38,4 [1.51]MAX

58,37 [2.298]

78,5 [3.09]MAX

40,6 [1.60] MAX

58,37 [2.298]

29,18 [1.149]

Page 26

26 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Option 3: Square Housing with End Ports

refer to Model Code, page 24

Steering Control Units—Series 5

Installation Drawing

Option 2: Round Housing with End Ports

Sectional Drawing

11 Pin 10 Sleeve 8 Drive 3 O-ring 5 Gerotor 2 End cap 22 Dust seal 16 Bearing 15 Race 21 Quad seal 23 Retaining ring 7 Wear plate 6 housing

Displacement Dim. A Max.

cm3/r [in3/r] mm [inch]

31.5 [1.92] 135.1 [5.32]

39.5 [2.41] 137.2 [5.40]

50.8 [3.10] 136.1 [5.36]

63.1 [3.85] 137.9 [5.43]

73.8 [4.50] 139.7 [5.50] 100 [6.10] 144 [5.67] 120 [7.33] 147.3 [5.80]

Involute Spline 12 Tooth 16/32 D.P. 30° P.A.

59,00 [2.323] Dia.

[3.17] MAX 4 x M6 x 1.0-6H 12,2 [.48] Min. Depth

20,3±0,5

[.80±.02]

19,8±0,5

[.78±.02]

Pressure Port

13,7±0,5 [.54±.02]

23,6±0,5 [.93±.02]

5X .5625-18 UNF-2B SAE O-Ring Port

Left Port

[1.75] MAX

80,5

11,4±0,5 [.45±.02]

44,4

26,4±0,5 [1.04±.02]

[2.750±.002] Dia.

80,5

[3.17] MAX

Additional Port

8,9±0,5

[.35±.02]

Right Port

Tank Port

69,85±0,05

[.57±.02]

14,5±0,5

28,6

[1.126] MAX Dia.

27,9±0,5

[1.10±.02]

9,1

[.36] MAX

25,7

[1.01] MAX Dia.

5,1±0.8

[.20±.03]

9,9 [.39] MIN

8,9 [.35] MIN

VIEW B

Page 27

EATON Steering Catalog C-STOV-MC001-E1 May 2006 27

Steering Control Units—Series 5

Performance Data

Neutral Pressure Drop Inlet to Auxiliary

Relief V alve Curve

Input T orque Curve

bar

8 6

bar

6 2

[2]

11 L/min [3 GPM] Rated Round Unit

[1]

19 L/Min (5 GPM) Rated Unit

11 [3]

[2]

L/min [GPM]

[4]

L/min [GPM]

[3]

[5]

[6]

[4]

[PSI] [120]

[ 80]

[ 40]

[ 0]

[PSI]

[250] [200] [150] [100]

[ 50]

[ 0]

1 3 5 7 9 11 13 15

135

125 115

105

bar

L/min

2000 1900 1800 1700 1600 1500 1400 1300 1200

PSI

1100 1000

900 800 700 600 500

1234

GPM

0 102030405060708090100

Percent Deflection

Standard torque

Low torque

in-lbNm

Page 28

28 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Tapered 17.919mm (.7055in) diameter, .083:1 and serrated

17.5 (.688) diameter, 40 tooth, M16x1.5-6g, Extension length

65.02 (2.56)

M16 x 1.5-6g

.0831:1

65.0 ± 0.5

[2.56 ± .02]

9.1

[.36] MAX

25.7

[1.01] MAX

19.2

[.755] MAX

14.27 ± 0.25 [.562 ± .010]

29.36 ± 0.25

[1.156 ± .010]

17.919

[.7055]

Steering Control Units—Series 5

Integral Column Option

Integral Column Option Av ailable in Square Housing with Side Ports, and Round Housing with End Ports

40 T ooth Serrated Integral Column Option (Shown on Round Housing with End Ports)

12 Tooth Internal Spline Standard Mechanical Interface (Shown on Round Housing with End Ports)

69,85±0,05 [2.750±.002] Dia.

28,6

[1.126] MAX Dia.

Internal Involute Spline 12 Tooth 16/32 D.P. 30° P.A.

9,1

[.36] MAX

25,7

[1.01] MAX Dia.

5,1±0,8

[.20±.03]

9,9 [.39] MIN

8,9 [.35] MIN

Page 29

Steering Control Units—Series 10

Product Description

Eaton’s Series 10 Steering Control Unit (SCU) facilitates hydraulic fluid flow like no other unit on the market. This highly-engineered product is the ultimate SCU for mid-range flow applications.

Benefits

• The new Series 10 SCU has an unprecedented, continuous pressure rating of 275 bar (4000 psi), making it ideal for heavy-duty equipment, such as construction and agricultural machinery.

• Its high-pressure rating reduces overall equipment costs, since smaller cylinder sizes can be assigned into the system.

• The new Series 10 incorporates proven Eaton technologies. An internal, balanced architecture and a widewalled sleeve that is 40% thicker than standard designs offer

increased performance

during transient pressure conditions.

Features

• Open Center

• Power Beyond

• Closed Center

• Load Sensing

• Integral Valves

• Q-Amp

• 2-Speed

• Dual Displacement

• V ersa Steer

• Wide Angle

• Cylinder Damping

Applications

• Construction Machinery

• Agriculture Machinery

• Heavy-Duty Equipment

• Marine

• Forestry Machinery

• Mining Equipment

SPECIFICATIONS

Max. System Pressure 275 bar [4000 PSI] Max. Back Pressure 21 bar [305 PSI] Rated Flow

– Low 7,6 - 15 l/min [ 2 - 4 GPM] – Medium 15 - 30 l/min [ 4 - 8 GPM] – High 30 - 61 l/min [ 8 - 16 GPM] – Low (with Q-Amp) 8 - 19 l/min [ 2 - 5 GPM] – Medium (with Q-Amp) 19 - 38 l/min [ 5 - 10 GPM] – High (with Q-Amp) 38 - 76 l/min [10 - 20 GPM]

Max. Differential

Between Steering Unit and System Temperature 28° C [50° F]

Max. System

Operating Temperature 93°C [200° F]

Input Torque

Powered 1,1-2,8 Nm @ 6,9 bar back pressure

[10-25 lb-in @ 100 PSI back pressure]

Non-Powered 136 Nm [100 lb-ft] Fluid See Eaton Technical Bulletin 3-401 Recommended Filtration ISO 18/13 cleanliness level

PORT SIZES:

Work Ports (4) Load Sense (LS) Port (1)* 3/4-16 (SAE) 7/16-20 M18 x 1,5 - 6H M12 x 1,5 - 6H G 1/2 (BSP) Straight Thread G 1/4 (BSP) Straight Thread STC Dash 08** STC Dash 06**

*Top or side when applicable

**STC

Ports, Aeroquip patented, feature snap to connect technology

EATON Steering Catalog C-STOV-MC001-E1 May 2006 29

Page 30

Steering Control

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

30 31 32

A D R AAAAA01AA

Model Code — Series 10 Steering Control Units

Units—Series 10

Model Code— Ordering Information

The following 32-digit coding system has been developed to identify all of the configuration options for the Series 10 steering control units. Use this model code to specify a unit with the desired features. All 32-digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

Nos Feature Code Description Nos Feature Code Description

1,2,3 Product Series ADR Series 10 Steering Control

4 Unit Type A Standard

5 Nominal Flow Rating 1 11 l/min [3 GPM]

6 Inlet Pressure Rating 1 276 bar [4000 PSI]—(Load

7 Return Pressure A 21 bar [305 PSI] Max.—

Rating (standard rating*)

8-9 Displacement 01 352 [21.5] / 60 [3.6]

cm3/r [in3/r] — 02 218 [13.3] / 60 [3.6] Dual Displacement 03 290 [17.7] / 60 [ 3.6] Combined/Manual 04 440 [26.8] / 146 [8.9]

8-9 Displacement 40 60 [3.6]

cm3/r [in3/r] 43 75 [4.5]

Unit

B Dual Displacement C Wide Angle D 2-Speed

E 2-Speed with Wide Angle G Dual Displacement with Wide

Angle

V Versa Steer, Wide Angle

(Open Center)

2 23 l/min [6 GPM]

(Closed Center and LS)

3 45 l/min [12 GPM]

(OC, CC, and LS)

4 19 l/min [5 GPM]

(Q-Amp)

5 38 l/min [10 GPM]

(Q-Amp)

6 76 l/min [20 GPM]

(Q-Amp)

7 23 l/min [6 GPM]

(Open Center)

sensing and closed center)

2 207 bar [3000 PSI]—

(Open center)

B 10 bar [145 PSI] Max.

05 231 [14.1] / 85 [5.2]

45 95 [5.9] 48 120 [7.3] 50 145 [8.9] 51 160 [9.7] 52 185 [11.3] 54 230 [14.1] 57 295 [17.9] 59 370 [22.6] 61 460 [28.2] 64 590 [35.9] 66 740 [45.1]

1-8 GPM

8-16 GPM

10 Flow Amplification** A None (No Q-Amp)

B 1.6 : 1.0 Ratio† C 1.6 : 1.0 Ratio

(with Manual Steering)†

E 2.0 : 1.0 Ratio

(with Manual Steering)†

G 1.3 : 1.0 Ratio

(with Manual Steering)†

†Use with closed center or

load sensing only.

11 Neutral Circuit A Open Center

C Closed Center D Load Sensing, Static Signal E Load Sensing, Dynamic Signal

F Open center with

Power Beyond

12 Load Circuit A Non-Load Reaction

B Load Reaction (Open Center

3,8 - 30 l/min [1 - 8 GPM] Only

D Non-Load Reaction,

Cylinder Damped

13,14 Special Spool/Sleeve 00 None

Modification

15,16 Valve Options

Manual Load Inlet Cylinder Anti- Inlet

Steering Sensing Check Relief Cavitation Relief

Check Relief Valve Valve Valve Valve

01 •

02 • •

03 • •

04 • • •

05 • •

06 • • •

07 • • •

08 • • • •

09 • • • • •

10• ••• •

11 • • •

* 12 GPM open center requires 145psi back pressure ** All Q-amp applications need approval from an Eaton Applications Engineer

30 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Continued on next page

Page 31

EATON Steering Catalog C-STOV-MC001-E1 May 2006 31

Steering Control Units—Series 10

Model Code— Ordering Information— Continued

17 ,18 Inlet or Load Sense 00 None

Relief Valv e — 18 124 [1800] bar [PSI] 19 131 [1900]

20 138 [2000] 21 145 [2100] 22 152 [2200] 23 158 [2290] 24 165 [2390] 25 172 [2490] 26 179 [2600] 27 186 [2700] 28 193 [2800] 29 200 [2900] 30 207 [3000] 31 214 [3100] 32 220 [3190] 33 227 [3290] 34 234 [3390] 35 241 [3500] 36 248 [3600] 37 255 [3700] 38 262 [3800] 39 269 [3900] 40 276 [4000] 99 136 [1970]

19,20 Cylinder Relief Valve 0 0 None

— bar [PSI] 23 158 [2290] ** Cylinder Relief 24 165 [2390] setting recommen- 25 172 [2490] dation is 870 PSI 26 179 [2600] (60 bar) above 27 186 [2700] steering inlet/load 28 193 [2800] sense pressure. 29 200 [2900]

30 207 [3000] 31 214 [3100] 32 220 [3190] 33 227 [3290] 34 234 [3390]] 35 241 [3500] 36 248 [3600] 37 255 [3700] 38 262 [3800] 39 269 [3900] 40 276 [4000] 41 283 [4100] 42 289 [4190] 43 296 [4290] 44 303 [4390 45 310 [4500] 46 317 [4600] 47 324 [4700] 48 331 [4800] 49 338 [4900]

21,22,23,24 Ports and AAAA 4 x 3/4-16 (SAE) Ports

Mounting None (No Additional Port) Threads 2 x M12 Mounting Threads

Port Face 4 x M10 Mounting Threads Mounting Face

AABA 4 x 3/4-16 (SAE) Ports

7/16-20 Load Sensing Port on Side 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

AACA 4 x 3/4-16 (SAE) Ports

7/16-20 Load Sensing Port Port Face 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

BAAA 4 x M18 x 1,5 - 6H Metric

O-ring Ports None (No Additional Port) 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

BADA 4 x M18 x 1,5 - 6H Metric

O-ring Ports M12 x 1,5 - 6H Load Sensing Port on Side 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

BAEA 4 x M18 x 1,5 - 6H Metric

O-ring Ports M12 x 1,5 - 6H Load Sensing Port Port Face 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

CAAA

4 x G 1/2 (BSP) Straight Thread Ports None (No Additional Port) 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

Continued on next page

Nos Feature Code Description Nos Feature Code Description

Page 32

32 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

21,22,23,24 Ports and CAFA 4 x G 1/2 (BSP) Straight Thread

Mounting Ports Threads G 1/4 (BSP) LS Straight Thread Port (continued) on Side

2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

CAGA 4 x G 1/2 (BSP) Straight Thread

Ports G 1/4 (BSP) LS Straight Thread Port on Port Face 2 x M12 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

DAAA Dash 08 STC® Ports ***

None (No Additional Port) 2 x M10 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

DAHA Dash 08 STC® Ports ***

Dash 06 STC® Port on Side 2 x M10 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

DAJA Dash 08 STC® Ports ***

Dash 06 STC® Port Face 2 x M10 Mounting Threads Port Face 4 x M10 Mounting Threads Mounting Face

25 Mechanical A Internal Involute Spline,

Interface 12 Tooth 16/32 DP 30° PA

26 Input Torque 3 Standard 27 Fluid Type A See Eaton T echnical

Bulletin 3-401

28,29 Special Features AA None 30 Paints and Packaging 1 Black Primer 31 Identification 0 Eaton Product Number on

Nameplate

32 Eaton Assigned B Assigned Design Code

Design Code

STC®—Aeroquip

Patent numbers: 5,553,895

5,226,682 5,570,910

Steering Control Units—Series 10

Model Code— Ordering Information— Continued

*** STC with inlet check requires threaded adapter. Contact your Eaton Account Representative for assistance.

Nos Feature Code Description

STC Hose/Connector

Dash 08 Port Face (4) Dash 06 LS Port Side (1)

STC Port

Release Sleeve

Housing Retaining Ring

Backup Washer O-ring

Page 33

EATON Steering Catalog C-STOV-MC001-E1 May 2006 33

PORT AND MOUNTING THREAD COMBINATIONS

Column Load Port

PortMounting Sensing* Mounting

Thread PortThread

3/4 -16 M10 x 1,5-6H 7/16 - 20 M12 x 1,75-6H M18 x 1,5-6H M10 x 1,5-6H M12 x 1,5-6H M12 x 1,75-6H STC M10 x 1,5-6H STC M12 x 1,75-6H G 1/2 (BSP) M10 x 1,5-6H G 1/4 (BSP) M12 x 1,75-6H

*Load Sensing Units Only.

Displacement cm3/r Dimension C Dimension D [in3/r] mm [in.] mm [in.]

60 [ 3.6] 10,2 [ .40] 138,1 [5.44] 75 [ 4.5] 10,2 [ .40] 138,1 [5.44]

95 [ 5.9] 13,2 [ .52] 141,1 [5.56] 120 [ 7.3] 16,5 [ .65] 144,4 [5.69] 146 [ 8.9] 20,1 [ .79] 148,0 [5.83] 159 [ 9.7] 21,8 [ .86] 149,9 [5.90] 185 [11.3] 25,4 [1.00] 153,3 [6.04] 231 [14.1] 31,7 [1.25] 159,7 [6.29] 293 [17.9] 40,4 [1.59] 168,3 [6.63] 370 [22.6] 50,8 [2.00] 178,7 [7.04] 462 [28.2] 63,5 [2.50] 191,4 [7.54] 588 [35.9] 80,8 [3.18] 208,8 [8.22] 739 [45.1] 101,6 [4.00] 229,6 [9.04]

Steering Control Units—Series 10

Installation Drawing

Load Sensing Side Port

44,45/44,34 [1.750/1.746] Dia.

* LS side port location changes with a LSR

83,8 [3.30] Dia. Max.

8,89/8,39 [.350/.330]

94,0 [3.70] Max.

56,1[2.21]

47,8

2,05/3,36 [.081/.132]

8,2 [.32] Max.

[1.88]

37,08/36,32 [1.460/1.430] 63,12/62,62 [2.485/2.465]

48,8

56,13/55,37 [2.210/2.180]

[1.92] Max.

12 Tooth Involute Spline 16/32 D.P. 30° P.A. 14,2 [.56] Deep

Column Mounting Thread x 15,2 [.60] Deep on 82,5 [3.25]

45°

Dia. Bolt Circle

7,4/5,4 [.29/.21] Spline

63,25/62,49 [2.490/2.460]

38,61/38,41 [1.52/1.480]

Load Sensing Side Port

Load Sensing Port Face

Left

Right

44,96/43,94 [1.770/1.730]

22,48/21,98

Tank Pressure

[.885/.865]

Port Mounting Thread x 24,1 [.95] Min. Deep (2)

10,2 [.40] Min. Depth (7,1 [.28] Max. Mating Spline Depth)

60,51/59,49

[2.382/2.342] 103,6 [4.08]

58,67/58,17

Max.

[2.310/2.290]

45,0/44,0 [1.77/1.73] Max.

94,0 [3.70] Max.

83,8 [3.30] Dia. Max.

Page 34

34 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Steering Control Units—Series 10

Sectional Drawing and Integral Valves

Inlet Check Valve

Cylinder Port

Anti-Cavitation Valves for Cylinder Ports

Shock Valves

Inlet Relief Valve

Internal Check

Valve for Limited Manual Steering

Load Sense Relief Valve

Page 35

EATON Steering Catalog C-STOV-MC001-E1 May 2006 35

Steering Control Units—Series 10

Performance Data

Cylinder Relief Valve

Pressure Drop versus Flow

Inlet Relief Valve

Pressure Drop versus Flow

Anti-Cavitation V alve

Pressure Drop versus Flow

[1000]

[1500]

[2000]

[2500]

[3000]

[PSI]

bar

Flow GPM

Flow l/min

0510

100

130

160

190

220

010203040

The examples above are 2 of 24 pressure settings

shown in model code page 30 Position 17, 18

Legend

Input T orque

4 6 8 10 12 14 16 18

350

280

210

140

12345

Legend

The examples above are 4 of 27 pressure settings shown in

model code page 30 Position 19, 20

0246810121416

12 10

8 6

bar

4 2 0

12 34

Flow l/min

Flow GPM

(23)

Flow l/min

Flow GPM

(27)

(30)

[5000]

[4000]

[3000]

[2000]

[150]

[100]

[ 50]

[ 0]

[PSI]bar

[PSI]

(34)

0 102030405060708090100

Percent Deflection

Standard Torque

32 28 24 20 16

lb-in

8 4

Page 36

36 EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006

Steering Control Units— Series 10 Dual Displacement

Installation Drawing

Manual Displacement Dimension C cm3/r [in3/r] mm [in.]

Gerotor 1

60 [ 3.6] 10,2 [ .40] 60 [ 3.6] 10,2 [ .40] 60 [ 3.6] 10,2 [ .40] 60 [ 3.6] 10,2 [ .40] 60 [ 3.6] 10,2 [ .40]

Displacement Dimension D cm3/r [in3/r] mm [in.]

Gerotor 2

95 [ 5.9] 13,2 [ .52] 120 [ 7.3] 16,5 [ .65] 145 [ 8.9] 20,0 [ .79] 160 [ 9.7] 21,8 [ .86] 185 [11.3] 25,4 [1.00]

Powered Displacement Dimension B Dimension A cm3/r [in3/r] mm [in.] mm [in.]

Gerotor 1 and 2

156 [ 9.5] 146,5 [5.77] 182,9 [7.20] 179 [10.9] 146,5 [5.77] 186,2 [7.33] 205 [12.5] 146,5 [5.77] 189,7 [7.47] 218 [13.3] 146,5 [5.77] 191,5 [7.54] 244 [14.9] 146,5 [5.77] 195,1 [7.68]

PORT AND MOUNTING THREAD COMBINATIONS

Port Column Mounting Load Sensing* Port Mounting

Thread PortThread

3/4 -16 M10 x 1,5-6H 7/16 - 20 M12 x 1,75-6H M18 x 1,5-6H M10 x 1,5-6H M12 x 1,5-6H M12 x 1,75-6H STC** M10 x 1,5-6H STC** M12 x 1,75-6H G 1/2 (BSP) M10 x 1,5-6H G 1/4 (BSP) M12 x 1,75-6H

*Load Sensing Units Only. **See Page 32 (lower right).

94,0 [3.70] Max.

56,1

[2.21]

48,8 [1.92] Max.

47,8 [1.88]

Column Mounting Thread x 15,2 [.60] Deep on 82,5 [3.25] Dia. Bolt Circle

37,08/36,32 [1.460/1.430] 63,12/62,62 [2.485/2.465] 56,13/55,37 [2.210/2.180]

Load Sensing/Power Beyond Side Port

38,61/38,41

21,1 [.83]

[1.52/1.480]

44,96/43,94 [1.770/1.730]

83,8 [3.30] Dia.

Gerotor 1

Gerotor 2

Max.

12 Tooth Involute Spline 16/32 D.P. 30° P.A. 14,2 [.56] Deep

63,25/62,49 [2.490/2.460]

Load Sensing – Side Port

8,89/8,39 [.350/.330]

45°

Left Tank PressureRight

7,4/5,4 [.29/.21] Spline

8,2 [.32] Max.

2,05/3,36 [.081/.132]

44,45/44,34 [1.750/1.746] Dia.

Port Mounting Thread x 24,1 [.95] Min. Deep (2)

10,2 [.40] Min. Depth (7,1 [.28] Max. Mating Spline Depth)

16,3 [.64] 80,3 [3.16]

Load Sensing Port Face

25.7°

22,48/21,98 [.885/.865]

60,51/59,49 [2.382/2.342]

29,7 [1.17]

Page 37

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 37

Steering Control Units— Series 20

Product Description

SPECIFICATIONS

Max. System Pressure 241 bar [3500 PSI] Max. Back Pressure 10 bar [145 PSI] Rated Flow 95 l/min [25 GPM] Max. Flow 125 l/min [33 GPM] Max. Differential

Between Steering Unit 28° C and System Temperature 50° F

Max. System

Operating Temperature 93°C [200° F]

Input Torque

Powered 1,1-2,8 Nm @ 6,9 bar back pressure

[10-25 lb-in @ 100 PSI back pressure]

Non-Powered 136 Nm [100 lb-ft] Fluid See Eaton Technical Bulletin 3-401 Recommended Filtration ISO 18/13 cleanliness level

The Series 20 steering control unit continues Eaton’s tradition of innovative design and high quality that began with the first fluid linked power steering system.

You can count on this steering unit to provide the same smooth, predictable steering as the Char-Lynn steering units that provide dependable, trouble-free steering on applications around the world.

• Provides much

smoother steering

function by minimizing jerky motion on articulated vehicles.

• Jerk-reducing valves and accumulators can be eliminated on most vehicles, providing customer savings through few er components required and reduced

system cost.

• Symmetrical valving provides passageways and valving that are equally placed, and pressure areas that are staged for minimum internal leakage. This results in balance, precise servo response and uniform left or right steering action.

• Eaton’s high capacity gerotor provides ample fluid displacement from an even more compact unit than was previously offered.

• A thicker sleeve design provides stability, especially during pressure and thermal transient conditions.

• The seal and centering spring designs provide

positive, low-effort steering feel to ensure

excellent vehicle control, an important feature for the vehicles for which these steering control units were designed.

Features

• Load Sensing

• Integral Valves

• Q-Amp

• Wide Angle

• V ersa Steer

• Cylinder Damping

Applications Articulated V ehicles

• Loaders

• Scrapers

• Skidders

• AG Tractors

• Dumpers

• Sprayers

• Forestry Equipment

Rigid Frame Vehicles

• Front End Loaders

• Large Graders

• Mining Trucks

• T ransporters

• AG Tractors

Page 38

38 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

The following 29-digit coding system has been developed to identify all of the configuration options for the Series 20 steering control units. Use this model code to specify a unit with the desired features. All 29-digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

Steering Control Units—Series 20

Model Code – Ordering Information

1,2,3 Product Series ACC Series 20 Steering Control Unit 4 Nominal Flow 4 38 l/min [10 GPM] (Q-Amp)

Rating 6 76 l/min [20 GPM] (Q-Amp)

7 95 l/min [25 GPM] (Non-Q-Amp) A 114 l/min [30 GPM] (Q-Amp)

5 Inlet Pressure 6 241 bar

Rating [3500 PSI]

6 Return Pressure A 10 bar [145 PSI] Maximum

Rating

7-8 Displacement 40 60 [3.6]

cm3/r [in3/r] 43 75 [4.5]

45 95 [5.9] 48 120 [7.3] 50 145 [8.9] 51 160 [9.7] 52 185 [11.3] 54 230 [14.1] 57 295 [17.9] 59 370 [22.6] 61 460 [28.2] 64 590 [35.9] 66 740 [45.1] 69 985 [60.0]

9 Flow Amplification 0 No Q-Amp

1 1.6 : 1.0 Ratio

(Actual Displ. 185 to 985 cm3/r [11.3 to 60.0 in3/r])

3 2.0 : 1.0 Ratio

(Actual Displ. 60 to 370 cm3/r

[3.6 to 22.6 in3/r])

10 Neutral Circuit F Load Sensing, Dynamic Signal 11 Load Circuit A Non-Load Reaction

D Non-Load Reaction, Cylinder

Damped

Use with 38 l/min [10 GPM]

Use with 76 l/min [20 GPM]

Use with 114 l/min [30 GPM]

12,13 Valve Options*

Manual** Load Inlet** Cylinder Anti-

Steering Sensing Check Relief Cavitation

Check Relief Valve Valve Valv e 00 01 • 02 • 09 • • • 10 • • • • 13•••• • 21 • • 24 • • • 40 • • • •

*Not all valve options will work with all unit combinations

**76 l/min [20 GPM] Max.

14,15 Load Sensing Relief 00 None

Valve Setting 4N 150 bar [2180 PSI]

50 160 bar [2320 PSI] 5A 170 bar [2470 PSI] 5L 180 bar [2610 PSI] 5Y 190 bar [2760 PSI] 68 200 bar [2900 PSI] 6J 210 bar [3050 PSI] 6V 220 bar [3190 PSI] 76 230 bar [3340 PSI] 7G 240 bar [3480 PSI]

Continued on next page

Nos Feature Code Description Nos Feature

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

A C C F6A ANAA10C

Page 39

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 39

Steering Control Units—Series 20

Model Code— Ordering Information— Continued

16,17 Cylinder 00 None

Relief 6J 210 bar [3050 PSI] Valve 6V 220 bar [3190 PSI] Setting 76 230 bar [3340 PSI]

7G 240 bar [3480 PSI] 7T 250 bar [3630 PSI] 84 260 bar [3770 PSI] 8E 270 bar [3920 PSI] 8R 280 bar [4060 PSI] 92 290 bar [4210 PSI] 9C 30 0 bar [4350 PSI]

18,19,20,21 Ports and AABN 4 x G 1/2 (BSP) Ports with

Mounting G 1/4 (BSP) Load Sensing Port on Threads Side, M10 Mounting Threads

DACN 4 x 3/4 (SAE) Ports with 7/16 (SAE)

Load Sensing Port on Side, M10 Mounting Threads

FAFN 4 x M18 (Metric) Ports with M12

(Metric) Load Sensing Port on Side, M10 Mounting Threads

FBFN 4 x M18 (Metric) Ports with M14

(Metric) Load Sensing Port on Side, M10 Mounting Threads

RACN* 4 x 7/8 (SAE) Ports with 7/16 (SAE)

Load Sensing Port on Side, M10 Mounting Threads

SAFN* 4 x M22 (Metric) Ports with M12

(Metric) Load Sensing Port on Side, M10 Mounting Threads

SBFN* 4 x M22 (Metric) Ports with M14

(Metric) Load Sensing Port on Side, M10 Mounting Threads

18,19,20,21 Ports and DADN 4 x 3/4 (SAE) Ports with 7/16 (SAE)

Mounting Load Sensing Port on Port Face, Threads M10 Mounting Threads (Load AAWN 4 x G 1/2 (BSP) Ports with G 1/4 Sensing (BSP) Load Sensing Port on Port Relief Face, M10 Mounting Threads Only) RADN* 4 x 7/8 (SAE) Ports with 7/16 (SAE)

Load Sensing Port on Port Face, M10 Mounting Threads

FAVN 4 x M18 (Metric) Ports with M12

(Metric) Load Sensing Port on Port Face, M10 Mounting Threads

SAVN* 4 x M22 (Metric) Ports with M12

(Metric) Load Sensing Port on Port Face, M10 Mounting Threads

22 Input Torque 1 Low

3 Standard (Includes Stiffer Springs)

23 Fluid Type A See Eaton Technical Bulletin 3-401 24 Special Application

Options 1 Wide Angle Deflection

V Versa Steer, Wide Angle.

25,26 Special Features AA None 27 Paints and Packaging 1 Black Paint 28 Identification 0 Eaton Product Number on

Nameplate

29 Eaton Assigned C Assigned Design Code

Design Code

*Use with 114 l/min [30 GPM]

Nos Feature Code Description Nos Feature Code Description

**Cylinder Relief Setting recommendation is 870 PSI (60 bar) above steering inlet/load sense pressure.

Page 40

40 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 20

Installation Drawing

R P

Displ. A B cm3/r [in3/r] mm [in.] mm [in.]

60 [ 3.6] 6,1 [ .24] 143,3 [5.64] 75 [ 4.5] 7,9 [ .31] 145,0 [5.71]

95 [ 5.9] 10,2 [ .40] 147,3 [5.80] 120 [ 7.3] 12,7 [ .50] 149,9 [5.90] 145 [ 8.9] 15,5 [ .61] 152,7 [6.01] 160 [ 9.7] 16,8 [ .66] 153,9 [6.06] 185 [11.3] 19,6 [ .77] 156,7 [6.17] 230 [14.1] 24,4 [ .96] 161,5 [6.36] 295 [17.9] 31,0 [1.22] 168,1 [6.62] 370 [22.6] 39,1 [1.54] 176,3 [6.94] 460 [28.2] 48,8 [1.92] 185,9 [7.32] 590 [35.9] 62,2 [2.45] 199,3 [7.85] 740 [45.1] 78,2 [3.08] 215,3 [8.48] 985 [60.0] 103,9 [4.09] 241,0 [9.49]

PORT AND MOUNTING THREAD COMBINATIONS

CDE*

3/4–16 UNF 2B** M10 x 1,5–6H 7/16–20 UNF 2B** G 1/2*** M10 x 1,5–6H G 1/4*** M18 x 1,5–6H M10 x 1,5–6H M12 x 1,5–6H, M14 M22 x 1,5–6H M10 x 1,5–6H M12 x 1,5–6H, M14

*Load sensing port option—on side (load sense relief

port face only - see page 44).

**SAE O-ring Port Port

***BSP Straight Thread Port

9,7 [.38] Min. 4,8 [.19] Min. 8,4 [.33] Max.

3,68/3,43 [.145/.135]

25,7 [1.01] Max.

See Catalog 11-872 for Column Details.

44,40 [1.748]

12 Tooth Involute Spline

58,37 [2.298]

16/32 D.P. 30° P.A. 13,58 [.535] Deep

(2)

29,18 [1.149]

M10 x 1,5-6H 16,2 [.60] (4)

(2)

98,3 [3.87] Max.

Mounting Surface

26,16 [1.030]

46,7 [1.84]

27,69 [1.09]

76,7 [3.02]

48,13

48,51 [1.910]

Load Sensing Port

[1.895]

Left Right

Tank Pressure

Inlet Check Valve (with Q-Amp Option)

48,51 [1.910]

33,40 [1.315]

19,6 [.77]

90,9 [3.58] Max.

107,4 [4.23] Max.

60,2 [2.37]

63,7 [2.51] Max.

Page 41

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 41

Steering Control Units—Series 20

Installation Drawing (Load Sense Relief Option)

Load Sense Relief Valve

50,5/49,5 [1.99/1.95]

Left

Tank Pressure

Load Sense Port*

• 7/16-20 UNF-2B (SAE) O-ring Port

• G 1/4 (BSP) Straight Thread Port

• M12 x 1,5 -6H (Metric) O-ring Port

*Load sense port on port face (is only available on units with load sense relief valve).

Right

52,8 [2.08] Max

Page 42

42 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 20

Sectional Drawing and Integral Valves

Load Sensing Port

Pressure Ports (4)

(Side)

Inlet Check Valve (with Q-Amp Option)

Inlet Check Valve

Load Sensing Port* Load Sense

Relief Valve

*Load Sense Port on Port Face Available with Load Sense Relief Option Only

Anti-Cavitation Valves (2)

Shaft Seal (3 piece)

Dust Seal

Bearing Race

Centering Spring Sleeve Spool Gerotor Cap Screw

Cylinder Relief Valves (2) (Standard)

or (High Capacity)

Housing

PinBearing, Needle Ball, Check Drive O-ring Spacer Plate End Cap

View of Gerotor Section

Page 43

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 43

Steering Control Units—Series 20

Performance Data

Cylinder Relief Valve Pressure Drop versus Flow

Input T orque

Flow l/min

4 6 8 10 12 14 16 18

350

280

210

140

12345

Legend (Code)

0 102030405060708090100

Standard Torque Low Torque

Flow GPM

(4Z)

Percent Deflection

(5S)

(6J)

[5000]

[4000]

[3000]

[2000]

(7B)

32 28 24 20 16 12

8 4

[PSI]bar

lb-in

Page 44

44 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 25

Product Description

The Series 25 SCU includes two patented designs (Balanced Architecture and Wide Angle) that make it even more responsive, reliable and cost effective.

Features

• Open Center

• Closed Center

• Load Sensing

• Integral Valves

• Q-Amp

• Wide Angle

• Pilot Pressure Port This is an added feature that can be used for:

- Pilot pressure to priority valve

- Diagnostics

• Cylinder Damping

Applications Articulated V ehicles

• Loaders

• Scrapers

• Skidders

• AG Tractors

Rigid Frame Vehicles

• Large Front End Loaders

• Graders

• Mining Trucks

• Articulated Dump Haulers

• T ransporters

Benefits

• Balanced architecture provides passageways that are equal in both directions and pressure areas that are staged for minimum leakage. This gives balance, precise servo response and uniform steering action in both directions while reducing drift.

• Progressive valving makes it possible to produce the spool/sleeve valve in a way that assures reliability and reduces costs.

• Eaton's high capacity gerotor assembly provides a lot of capacity in a small package.

• Heavier valve components- housing, spool and sleeveprovides stability, especially during pressure and thermal transient conditions.

• The seal and centering spring designs provides positive, low-effort steering feel assuring excellent vehicle control, an important feature on large vehicles.

SPECIFICATIONS

Max. System Pressure 241 bar [3500 PSI] Max. Back Pressure 21 bar [300 PSI] Rated Flow 95 l/min [25 GPM] Max. Flow 189 l/min [50 GPM] Max. Differential

Between Steering Unit 28° C and System Temperature 50° F

Max. System

Operating Temperature 93°C [200° F]

Input Torque

Powered 2,8-3,4 Nm @ 6,9 bar back pressure

[25-30 lb-in @ 100 PSI back pressure]

Non Powered ††† Fluid ATF Type A and most petroleum based fluids Recommended Filtration ISO 18/13 cleanliness level

††† Manual steering is not possible without hydraulic power.

Page 45

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 45

Steering Control Units—Series 25

Model Code – Ordering Information

1,2,3 Product Series ABW Series 25 Steering Control Unit 4 Nominal Flow 7 95 l/min [25 GPM]

Rating 8 151 l/min [40 GPM] (Q-amp only)

E 189 l/min [50 GPM] (Q-amp only)

5 Inlet Pressure 6 241 bar [3500 PSI]

Rating

6 Return A 10 bar [150 PSI]

Pressure Rating

7-8 Displacement 62 490 [30]

cm3/r [in3/r] 65 625 [38]

67 795 [48] 69 985 [60] 71 1230 [75]

9 Flow 0 None

Amplification 1 1.6 : 1.0 Ratio

10 Neutral Circuit A Open Center

C Closed Center D Closed Center with Neutral Bleed F Load Sensing, Dynamic Signal

11 Load Circuit A Non-Load Reaction

D Non-Load-Reaction, Cylinder Damping

(Use with Flow Amp and W ide Angle Only)

12,13 Valve Options 00 None

02 Anti-Cavitation Valve 21 Anti-Cavitation Valve, Cylinder

Relief Valv es

14, 15 Load Sense 00 None

Relief Valv e Setting

16,17 Cylinder Relief 00 None

Valve Setting 6F 207 bar [3000 PSI]

70 224 bar [3250 PSI] 7H 241 bar [350 0 PSI] 83 259 bar [3760 PSI] 8L 276 bar [4000 PSI] 95 293 bar [4250 PSI]

The following 29-digit coding system has been developed to identify all of the configuration options for the Series 25 steering control units. Use this model code to specify a unit with the desired features. All 29 digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

18,1 9,20,21 Ports and EAAA 4 x 1—1/6 Ports

Mounting with 3/8-16 UNC Column Threads Mounting

EAGA 4 x 1—1/6 Ports with 7/16 Load

Sensing Port and 7/16 SAE Pilot Pressure Port (Capped) with 3/8-16 UNC Column Mounting (Use with Load Sensing Units Only)

NBDN 4 x M27 with M12—LS and

M12 PP (Capped) M10 Mounting Threads (Use with Load Sensing Units Only)

NAAN 4 x M27 with M10 Mounting

Threads

22 Input 3 Standard

Torque

23 Fluid Type A See Eaton Technical Bulletin 3-401 24 Special 0 None

Applications 1 Wide Angle (Use with Load

Sensing Units Only)

25, 26 Special Features AA None 27 Paint 1 Black Paint 28 Identification 0 Eaton Product Number on

Nameplate

29 Eaton Assigned D Assigned Design Code

Design Code

Nos Feature Code Description Nos Feature Code Description

**Cylinder Relief Setting recommendation is 870 PSI (60 bar) above steering inlet/load sense pressure.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

A B W 6 A 0 0 A3AA10D

Page 46

46 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 25

Installation Drawing

Displacement D Max. cm3/r [in3/r] mm [in.]

490 [30] 205,5 [ 8.08] 625 [38] 211,4 [ 8.32] 795 [48] 219,0 [ 8.62] 985 [60] 228,4 [ 8.99]

1230 [75] 239,8 [ 9.44]

71,4 [2.81] Max. 4

89,7 [3.53] Max.

44°/46°

63,5 [2.5]

31,8 [1.25]

108,8 [4.28] Dia. Max.

44,45/44,43 [1.750/1.746] Dia.

89,7 [3.53]

6,3 [.25]

34°/36°

Left

37,4 [1.47]

138,5 [5.45]

Max.

63,5 [2.5]

3,63/1,85 [.143/.073]

8,8 [.35] Min.

Tank

Right

134,2 [5.28] Max.

Pressure

1 1/16 UN O-ring Port (4)

25°/27°

5,4 [.21]

73,7 [2.90] Max.

3/8 -16 UNC x 15,2 [.60] Deep on 82,5 [3.25] Dia. Bolt Circle

12 Tooth Involute Spline 16/32 D.P. 30° P.A. 15,2 [.60] Min. Deep

Load Sensing Unit Only

59,2 [2.33] Max.

8,9 [.35] Max.

9,3 [.37] Min. Depth (7,1 [.28] Max. Mating Spline Depth)

.7,4/5,8 [.29/.19] Spline

86,1 [3.39]

95,5 [3.76]*

Load Sensing

7/16-20 UNF O-ring Port (2)

Plug in PP Port

* *

Page 47

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 47

Steering Control Units—Series 25

Installation Drawing with Cylinder Relief, Anti-Cavitation

Displacement D Max. cm3/r [in3/r] mm [in.]

490 [30] 205,5 [ 8.08] 625 [38] 211,4 [ 8.32] 795 [48] 219,0 [ 8.62] 985 [60] 228,4 [ 8.99]

1230 [75] 239,8 [ 9.44]

96,3 [3.79] Max. (4)

89,7 [3.53] Max.

108,8 [4.28] Dia. Max.

44°/46°

3,63/1.42 [.143/.096]

63,5 [2.5]

31,8 [1.25]

44,45/44,43 [1.750/1.746] Dia.

89,7 [3.53]

37,4 [1.47]

6,3 [.25]

34°/36°

Left

63,5 [2.50]

165,9 [6.53] Max.

8,8 [.35] Min.

Tank

Right

Pressure

1 1/16 UN O-ring Port (4)

70,4 [2.77] Max (4)

140,0 [5.51] Max.

25°/27°

5,4 [.21]

73,7 [2.90] Max.

3/8 -16 UNC x 15,2 [.60] Deep on 82,5 [3.25] Dia. Bolt Circle

12 Tooth Involute Spline 16/32 D.P. 30° P.A. 15,2 [.60] Min. Deep

Load Sensing Unit Only

59,2 [2.33] Max.

8,9 [.35] Max.

9,3 [.37] Min. Depth (7,1 [.28] Max. Mating Spline Depth)

.7,4/5,8 [.29/.19] Spline

86,1 [3.39]

95,5 [3.76]*

Load Sensing

7/16-20 UNF O-ring Port (2) Plug in PP Port

* *

Page 48

48 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 25

Performance Data

l/mi

Average Pressure Drop at Full Valve Deflection

Input Torque Pressure Relief Characteristics

Neutral Pressure Drop - Open Center Fluid Viscosity 25 cSt [120 SUS]

SCU V alve Section Check V alve Characteristics

75 60 45 30

bar

0 1020304050

Low Torque Wide Angle

38 [10]

75 [20]

l/min [GPM]

60 70 80 90 100

Percent Deflection

114 [30]

151 [40]

[32] [28] [24] [20] [16] [12] [ 8] [ 4]

[ 0]

[1000] [ 800] [ 600] [ 400]

[PSI]

[ 200] [ 0]

[lb-in]

14 12 10

bar

8 6 4 2 0

038

300 250 200 150 100

[10]

l/min [GPM]

20 40 60 80 100

[5] [10] [15] [20] [25][0]

[GPM]

[200] [160]

[PSI]

[120] [ 80] [ 40] [ 0]

75 [20]

114 [30]

[4500] [4000] [3500] [3000] [2500] [2000] [1500] [1000] [ 500]

[0]

[PSI]bar

Left

Tank Pressure

Right

bar

20 40 60

10 15

l/min

GPM

80 100

20 25

26.4

[360] [320] [280] [240] [200] [160] [120] [ 80] [ 40] [ 0]

[PSI]

Page 49

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 49

Steering Control Units—Series 40

Product Description

The Series 40 steering control unit includes two patented designs that make it even more responsive, reliable and cost effective.

Benefits

• Symmetrical valving provides passageways and valving that are equal in both directions and pressure areas that are staged for minimum leakage. This gives balance, precise servo response and uniform steering action in both directions.

• Progressive valving makes it possible to produce the spool/ sleeve valve in a way that assures reliability and reduces costs.

• Eaton’s high capacity gerotor assembly provides a lot of capacity in a small package.

• Heavier valve components—housing, spool and sleeve— provide stability, especially during pressure and thermal transient conditions.

• The seal and centering spring designs provide positive, low-effort steering feel assuring excellent vehicle control, an important feature on large vehicles for which this steering control was designed.

Features

• Open Center

• Closed Center

• Load Sensing

• Q-amp

• Pilot Pressure Port* *This is an added feature

that can be used for:

1. pilot pressure to priority valve.

2 diagnostics.

• Cylinder Damping

Applications Articulated V ehicles

• Loaders

• Scrapers Frame Vehicles

• Large Front End Loaders

• Large Graders

• Mining Trucks

• Articulated Haulers

• T ransporters

SPECIFICATIONS

Max. System Pressure 241 bar [3500 PSI] Max. Back Pressure 21 bar [300 PSI] Rated Flow 151 l/min [40 GPM] Max. Flow 212 l/min [56 GPM] Max. Differential

Between Steering Unit 28° C and System Temperature 50° F

Max. System

Operating Temperature 93°C [200° F]

Input Torque

Powered 2,8-3,4 Nm @ 6,9 bar back pressure

[25-30 lb-in @ 100 PSI back pressure]

Non Powered ††† Fluid ATF Type A and most petroleum based fluids Recommended Filtration ISO 18/13 cleanliness level

††† Manual steering is not possible without hydraulic power.

Page 50

50 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 40

Model Code – Ordering Information

The following 29-digit coding system has been developed to identify all of the configuration options for the Series 40 steering control units. Use this model code to specify a unit with the desired features. All 29 digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

1,2,3 Product Series ABY Series 40 Steering Control Unit 4 Nominal Flow 8 151 l/min [40 GPM]

Rating 9 227 l/min [60 GPM] (Q-amp only)

5 Inlet Pressure 6 241 bar [3500 PSI]

Rating

6 Return Pressure B 21 bar [300 PSI]

Rating

7-8 Displacement 71 1230 [ 75]

cm3/r [in3/r] 74 1560 [ 95]

76 1970 [120] 78 2460 [150] 80 3030 [185]

9 Flow Amplification 0 None

1 1.6 : 1.0 Ratio

10 Neutral Circuit A Open Center

C Closed Center D Closed Center with Neutral Bleed F Load Sensing, Dynamic Signal

11 Load Circuit A Non-Load Reaction

E Non-Load Reaction, Cylinder

Damping (Use with Q-amp only)

12,13 Integral Valv e 00 None 14,15 Integral Inlet Relief 00 None

Valve Pressure Setting

16,17 Cylinder Relief 0 0 None

Valve Setting

18,19,20,21 Ports and GAAA 4 x 1 – 5/16 SAE Ports with

Mounting 3/8-16 UNC Column Mounting Threads Threads

GAGA 4 x 1 – 5/16 SAE ports with

7/16 SAE Load Sensing Port and 7/16 SAE Pilot Pressure Port with 3/8-16 UNC Column Mounting Threads (Use with Load Sensing

Only)

22 Input T orque 3 Standard 23 Fluid Type A See Eaton Technical Bulletin 3-401 24 Special 0 None

Applications

25,26 Special Features AA None 27 Paint 0 No Paint 28 Identification 0 Eaton Product Number on

Nameplate

29 Eaton Assigned C Assigned Design Code

Design Code

Nos Feature Code Description Nos Feature Code Description

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

A B Y 6 B 0 0 0 0 0 0 0A3AA00C

Page 51

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 51

Steering Control Units—Series 40

Installation Drawing

Displacement D Max. cm3/r [in3/r] mm [in.]

1230 [ 75] 230,9 [ 9.09] 1555 [ 95] 245,9 [ 9.68] 1965 [120] 265,2 [10.44] 2460 [150] 288,3 [11.35] 3030 [185] 315,0 [12.40]

12 Tooth Involute Spline

67,5 [2.66]

16/32 D.P. 30° P.A. 15,2 [.60] Min. Deep

12,9 [.51]

40,7 [1.60]

44°/46°

127,0/126,4 [5.00/4.98] Dia.

63,5 [2.5]

Left

9,4 [.37] Min. Depth (7,1 [.28] Max. Mating Spline Depth)

7,4/4,8 [.30/.20] Spline 9,4 [.37] Min. 8,9 [.35] Max. 1,85/3,63 [.073/.143]

Right

134,2 [5.28] Max.

1/2 - 13 UNC x 13,4 [.53] Deep (3)

1/2 - 13 UNC 13,5 [.53] Deep on 161,93 [6.375] Dia. Bolt Circle

81,3 [3.20]

66,3* [2.61] Max.

34°/36°

Load Sensing Unit Only

31,8 [1.25]

44,45/44,43

6,3* [.25]

[1.750/1.746] Dia.

3/8 -16 UNC x 15,2 [.60] Deep on 82,5 [3.25] Dia. Bolt Circle

86,1 [3.39]

27,9 [1.10]

63,5 [2.5]

Tank

95,5 [3.76]

Pressure

1 5/16 -12 UN O-ring Port (4)

Load Sensing

7/16-20 UNF O-ring Port (2) Plug in PP Port

Page 52

52 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering Control Units—Series 40

Performance Data

Average Pressure Drop Through Open Center Load Sensing and Closed Center at Full Valve Deflection

Open Center Neutral Pressure Drop Fluid Viscosity 25 cSt [120 SUS]

Input T orque

Applications

• Articulated and Rigid Dump T ruc ks

• Mining Trucks

• Paving Equipment

bar

75 60 45 30 15

0 38

bar

16 14 12 10

8 6 4 2 0

0 38

[20]

l/min [GPM]

[20]

l/min [GPM]

151 [40]

227 [60]

[PSI]

[1200] [1000] [ 800] [ 600] [ 400] [ 200] [ 0]

[PSI] [240]

[200] [160] [120] [ 80] [ 40] [ 0]

0 102030405060708090100

Standard Torque

Percent Deflection

32 28 24 20

lb-in

16 12

8 4

Page 53

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 53

Standard Open Center

Power Beyond

Torque Generator

Product Description

Char-Lynn torque generators have been completely redesigned to meet the needs of the changing marketplace. These torque generators provide power assist for steering, eliminating the large hand wheels on gate valves, and provide powerful rotary motion with effortless manual rotary input on numerous other applications.

Features

Today’s market includes power steering on electric lift trucks. Char-Lynn torque generators have been designed with features that greatly improve the operator’s comfort as well as the vehicle’s performance.

The increase in port surface area allows for the additional port requirement for units with the following features:

Power Beyond

This version has three ports: Inlet (IN), Tank (OUT), and Excess Flow (EF). In the power beyond configuration, flow not used for priority steering exits the EF port and is available for the downstream reach function. Flow used for steering will exit the (OUT) port to tank, and cannot be used for auxiliary functions.

Load Sensing

Char-Lynn load sensing torque generators use conventional or load sensing power supplies to achieve load sensing steering. The use of a load sensing torque generator and a priority valve in a normal power steering circuit offers the following advantages:

• Provides smooth pressure compensated steering because load variations in the steering circuit do not affect axle response or maximum steering rate.

• beyond system capability by splitting the system into two independent circuits. Only the flow required by the steering maneuver goes to the steering circuit. Flow not required for steering is available for use in the auxiliary circuits.

• because the steering circuit always has flow and pressure priority.

Char-Lynn load sensing torque generators and priority valves can be used with open center, closed center or load sensing systems. Used either in an open center system with a fixed displacement pump or a closed center system with a pressure compensated pump, these torque generators offer many of the features of a load sensing system. Excess flow is available for auxiliary circuits.

OUT

217 Series (Gerotor Unit)

227 Series (Geroler Unit)

Input Torque

OUT

Output Torque

Gerotor/Geroler

Direct Mechanical Link

Out

Gerotor/Geroler

Direct Mechanical Link

Out

Torque Generator

Output Torque

Torque Generator

Page 54

54 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Torque Generator

Product Description Continued

Open Center with Case Drain

This high pressure open center torque generator allows the exit flow from the Torque Generator to operate another function (for example reach/tilt function of a fork lift vehicle). An external case drain is needed to protect seals and to allow for adequate recentering of spool and sleeve. The flow out the case drain is internal leakage only. This is a series circuit with some special characteristics that should be noted:

• A relief valve is required in the down stream circuit as well as a relief valve protecting the torque generator.

• The pressures in this circuit are additive. If it takes 41 bar [600 PSI] for steering and 55 bar [800 PSI] for the reach circuit, the pump will see 96 bar [1400 PSI].

• The relief valve for steering must always be set higher than the relief valve on the downstream function (reach). The margin between the two must be enough to provide adequate steering in the worst case (fork lift stationary and unloaded).

Anti-Friction Needle Bearings

Torque generators are available with anti-friction needle bearings at the power end to allow for direct mount sprockets or pinions when compactness of application does not allow for outboard bearings.

Gerotor or Geroler®Element

This is a fluid displacement element, consisting of an outer ring gear and an internal star. Manual low torque input actuates the spool of the spring centered spool and sleeve valve, allowing high pressure oil to turn the internal star. This star is coupled with a splined drive to the output shaft and also the sleeve of the spool and sleeve valve. High pressure oil turning the star in this gerotor or Geroler element is generating high output torque.

The Geroler elements have not been offered on torque generators in the past. These Gerolers have rolls incorporated into the outer ring, and the rolls provide rolling contact with the star point, minimizing friction and improving efficiency.

Limited Manual Steering

Relative deflection of the input and output shafts is limited mechanically within the unit so that limited manual steering is still possible in the event of power loss.

Reaction T orque Resistance

Customer supplied bracket is required for reaction torque resistance.

Load Sensing

Open Center (with Case Drain)

Input Torque

Direct Mechanical Link

Out

Direct Mechanical Link

Out

Case Drain

Output Torque

Gerotor/Geroler

Torque Generator

Output Torque

Gerotor/Geroler

Torque Generator

Page 55

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 55

Torque Generator

Product Information

SPECIFICATIONS 217 SERIES—GEROTOR UNIT

Displacement cm3/r [in3/r] 76 [4.7] 96 [5.9] 160 [9.7] Torque Output 62 Nm 79 Nm 124 Nm

(at 70 bar [1000 PSI]) [550 lb-in] [700 lb-in] [1100 lb-in] Recommended Flow 11,4 l/min 13,2 l/min 13,9 l/min

[3 GPM] [3.5 GPM] [5 GPM]

Max. Operating Speed 125 RPM 118 RPM 102 RPM (at Rated Pressure and Recommended Flow)

SPECIFICATIONS 227 SERIES—GEROLER®UNIT

Displacement cm3/r [in3/r] 80 [4.9] 102 [6.2] 160 [9.7] Torque Output 69 Nm 86 Nm 131 Nm

(at 70 bar [1000 PSI]) [608 lb-in] [760 lb-in] [1160 lb-in] Recommended Flow 11,7 l/min 15,1 l/min 18,9 l/min

[3.1 GPM] [4 GPM] [5 GPM]

Max. Operating Speed 125 RPM 118 RPM 102 RPM (at Rated Pressure and Recommended Flow)

COMMON SPECIFICATIONS 217 AND 227 SERIES

Rated Flow 15,1 l/min [4 GPM] Max. System

Operating Temperature 93° C [200° F] Input Torque Powered 1,6 - 2,5 Nm [14 - 22 lb-in] Non-Powered (Max.) 136 Nm [100 lb-ft] Output Shaft Side Load at

Keyway Centerline

without Bearing 23 kg [ 50 lb] with Bearing 272 kg [600 lb]

Fluid Most petroleum hydraulic fluids—see

your Eaton representative for use of fire-resistant and other special fluids

Recommended Filtration As needed to maintain

ISO 18/13 cleanliness level

Rated Pressure Depends on model—See

chart circuit type below

Circuit Type In Port Out Port Aux. Port Max. In minus Out

Open Center 69 bar [1000 PSI] 3 bar [ 50 PSI] — — Power Beyond 138 bar [2000 PSI] 3 bar [ 50 PSI] 138 bar [2000 PSI] 69 bar [1000 PSI] Load Sensing 69 bar [1000 PSI] 3 bar [ 50 PSI] 69 bar [1000 PSI] — Open Center w/Case Drain 172 bar [2500 PSI] 103 bar [1500 PSI] 3 bar [ 50 PSI] 69 bar [1000 PSI]

Housing, Port/ValveControl End Valve, Sleeve

Shaft, Input/ Valve, Spool

Centering Springs

Shaft Seal

Spacer Plate

Spacer

Gerotor/ Geroler

Power End

Power EndHousing,

(with/Needle Bearing Option)

Shaft, Output

Quad Seal

Static Seals (4)

Spacer Plate

DriveDrive

Needle Bearings

Page 56

56 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Torque Generator

Model Code Ordering Information

The following 20-digit coding system has been developed to identify all of the configuration options for the torque generator. Use this model code to specify a torque generator with the desired features. All 20 digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

1,2,3 Product Series ABP Torque Generator 4,5,6 Circuit T ype .

and Ratings A4A 15,1 l/min [4 GPM] Open Center —Max Inlet 69 bar [1000 PSI]

Out 3 bar [ 50 PSI]

D4C 15,1 l/min [4 GPM] Open Center

Power Beyond Inlet 138 bar [2000 PSI] Out 3 bar [50 PSI] Aux. (PB) 138 bar [2000 PSI] Dp

(Inlet – out) <69 bar [1000 PSI] (Limited to 76 [4.7], 80 [4.9], 96 [5.9] cm3/r [in3/r])

E4B 15,1 l/min [4 GPM] Open Center

with High Back Pressure (Case Drain) Inlet 172 bar [2500 PSI] Out 103 bar [150 0 PSI] Aux. (CD) 3 bar [50 PSI] Dp (Inlet –

out) <69 bar [1000 PSI]

C4D 15,1 l/min [4 GPM] Load Sensing

Dynamic Signal Inlet 69 bar [1000 PSI] Out 3 bar [50 PSI] Aux. (LS) 69 bar [1000 PSI]

7,8 Displacement 08 76 [4.7] Gerotor

cm3/r [in3/r] 10 96 [5.9] Gerotor

17 160 [9.7] Gerotor 58 80 [4.9] Geroler 60 102 [6.2] Geroler 66 160 [9.6] Geroler

9 Ports A 2 x .625 inch Dia. Manifold Ports

with 2 x 5/16-18 UNC Mounting Holes (use with port block) open center only

B 3 x .625 inch Dia. Manifold Ports

with 3 x 5/16 - 18 UNC Mounting Holes (use with port block)

C 2 x 9/16 SAE Ports—

open center only D 3 x 9/16 SAE Ports E 2 x G3/8 (BSP) Ports—

open center only F 3 x G3/8 (BSP) Ports

10 Shaft Bearings 0 None

1 Output Shaft Needle Bearings

11 Integral Valves 0 None 12 Input Torque 1 Standard 13 Shaft Ends A 22,17 [.874] Dia. with Keyway and

Cross Hole

14 Shaft Seals 1 Quad Rings 15 Mounting A 5/16-18 UNC

Threads

16,17 Special Feature 00 None

01 Port Block Installed

18 Paint and A Black Primer

Pac kaging

19 Identification 1 Eaton Product Number on

Nameplate

20 Eaton Assigned B Assigned Design Code

Design Code

Nos Feature Code Description Nos Feature Code Description

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

A B P 10A1 1AAB

Page 57

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 57

Pump

Torque Generator

Out

Valve

Cylinder

Torque Generator

Conventional System Circuits

Conventional System with Two Pumps

• Extra cost of two separate circuits

Conventional System with One Pump

• Can result in insufficient steering flow when operating the auxiliary function

Pump

Torque Generator

Cylinder

Out

Valve

Power Beyond Torque Generator

• Parallel circuit

• Steering has priority

• Simple system

• Single relief valve

• Flow to auxiliary function is reduced while steering

Torque Generator

Relief Valve

Pump

Out

Cylinder

Valve

Page 58

58 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Torque Generator

Conventional System Circuits

Load Sensing System

• Steering has priority

• Auxiliary function can operate at higher pressure than steering rating; priority valve isolates CF side from EF side pressures.

• Flow to auxiliary functions reduced while steering

High Back Pressure Torque Generator

• Series circuit; auxiliary and steering pressures are additive

• All flow available to auxiliary function, even while steering

• Separate relief valves required for steering and auxiliary

Pump

Priority Valve

Torque Generator

CF EF

Out

Cylinder

Valve

Pump

Relief Valve

Case Drain

Torque Generator

Out

Relief Valve

Cylinder

Valve

Page 59

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 59

Torque Generator

Installation Drawing

Displacement Dimension mm [inch] cm3/r [in3/r] A B C

217 Series 96,1 [5.86] 231,9 [9.13] 114,5 [4.51] 60,4 [2.38] (Gerotor Unit) 159,6 [9.73] 240,6 [9.47] 123,2 [4.85] 69,3 [2.73]

80,3 [4.90] 233,3 [9.18] 115,9 [4.56] 62,0 [2.44] 227 Series 101,6 [6.20] 237,2 [9.34] 119,8 [4.72] 65,9 [2.59] (Geroler®Unit) 160,0 [9.64] 247,5 [9.74] 130,1 [5.12] 76,2 [3.00]

Page 60

60 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Torque Generator

Ports

For proper operation it is recommended that the unit be installed so no radial load or thrust load is applied to either the input or output shafts. Misalignment of shafts will cause binding.

Displacement Dimension mm [inch] cm3/r [in3/r] C D

217 Series 96,1 [5.86] 60,4 [2.38] 63,5 [2.50] (Geroler®Unit) 159,6 [9.73] 69,3 [2.73] 72,1 [2.84]

227 Series 80,3 [4.90] 62,0 [2.44] (Gerotor Unit) 101,6 [6.20] 65,9 [2.59]

160,0 [9.64] 76,2 [3.00]

Page 61

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 61

Torque Generator—

217 Series Port Block

Installation Drawing Port Block with 3/8-18 Dryseal NPTF Ports

Page 62

62 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Torque Generator—

227 Series Port Block

Installation Drawing 9/16-18 UNF SAE O-ring Port

Displacement Dim. mm [inch] cm3/r [in3/r] E

80,3 [4.90] 62,0 [2.44] 227 Series 101,6 [6.20] 71,2 [2.80] (Geroler®Unit) 160,0 [9.64] 76,2 [3.00]

Page 63

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 63

Torque Generator

Performance Data

Torque Generator Pressure Drop

Page 64

64 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Antijerk V alves

Description

Antijerk Valv es provide smoother steering on articulated vehicles, such as Wheel Loaders. This is achieved by a pressure sequence valve mounted on a block. Patent pending.

(For more information see Vick ers

Screw-in Cartridge

Valv es Cat. V-VLOV-MC001-E2.)

Features

Dramatically reduces jerk when steering is stopped quickly and while making aggressive changes in direction. The valve works by monitoring the margin pressure acting on the steering valve. Margin spikes when steering wheel speed is reduced aggressively . When this

occurs a small amount of damping flow is allowed across the turn ports. Unlike accumulators this valve will not have a negative affect on roading performance, and it is more cost effective than cushion valves.

Applications

CF1 is supply from the pump or priority valve, CF2 should connect to the steering valve UPSTREAM of any check valves, LS1 & LS2 are the steering valve load-sense connection, R&L are pass through ports for the turn lines. The setting of the valve needs to be higher than the normal difference in pressures between CF and LS, i.e. if CF-LS is 150PSI then a good setting to start with is 200PSI.

Ordering Information

1. Reference Part Number: 59910 06-0 01

Ports:

CF1, CF2

/4-16 UNF

L1, L2, R1, R2

/4-16 UNF

LS1, LS2 7/16-20 UNF

Pressure Setting Range: 100-600PSI

2. Specify Ports.

Port Options Option 1 Option 2 Option 3 Option 4 Ports 8 Size 12 Size

CF1, CF2

/4-16 UNF M18 1 1/6-12UNF M27

L1, L2, R1, R2

/4-16 UNF M18 7/8-18 UNF M22

LS1, LS2 7/16-20 UNF M12 7/16-20 UNF M12

3. Choose Pressure Setting Options: Within the 7-40 bar [100-600 PSI] range with a minimum increment of 3.45 bar [50PSI]. Options: 1 7 bar [100 PSI]

1.5 10.5 bar [150 PSI]

- - - -

6 40 bar [600 PSI]

PSV10-10 Pressure Sequence Valves

SPECIFICATIONS

Pressure Rating for

Aluminum block 210 bar [3000 PSI]

Ductile Iron block 241bar [3500 PSI] Temperature Range -40º to 120ºC [-40º to 248ºF] Fluids All general purpose hydraulic fluids

such as: MIL-H-5606, SAE 10, etc.

Filtration Cleanliness code 18/16/13

Steering Control Unit

Electric Pump M

Emergency Steer Pump Supply

Implement Valve

CF1 CF

Priority Valve

PFC Pump

LS2

LS1

Anti Jerk Valve

R R2

Anti Jerk Manifold

Steer Cylinders

Page 65

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 65

Steering System Components

VLC In-Line Priority Valves

Control Pressure - bar [PSI] / Product Number

Static Dynamic Static Dynamic Static Dynamic

Ports (5) Port Size Signal Signal Signal Signal Signal Signal

3,5 [50] 5,2 [75] 5,2 [75] 7,6 [110] 6,9 [100] 10,0 [145]

P & EF 7/8 - 14 CF 3/4 - 16 606-1217 606-1232 606-1218 606-1314 606-1219 606-1315 LS & T 7/16 - 20

P & EF 3/4 -16 CF 9/16 - 18 606-1214 606-1327 606-1215 606-1278 606-1216 606-1328 LS & T 7/16 - 20

P & EF M22 X 1,5 CF M18 X 1,5 606-1329 606-1330 606-1331 606-1333 606-1334 LS & T M12 X 1,5

P & EF R 1/2 - 14 CF R 1/2 - 14 606-1335 606-1336 606-1337 606-1338 606-1339 606-1340 LS & T R 1/4 - 19

Code System Pressure Number bar [PSI]

DD 83 [1200] HE 120 [1725] LA 138 [2000] MC 150 [2175] NC 160 [2300] QA 172 [2500] UA 207 [3000] VD 230 [3325] VK 240 [3475]

For comprehensive information on all steering system components “Valves” see Eaton catalog 11-508.

60 l/min [16 GPM] Rate Flow

Relief Valve Qualified for 276 bar [4000 psi] max.

Rated CF Pressure is 276 bar [4000 psi]

Rated Inlet and EF Pressure is 276 bar [4000 psi]

Example: 606-1218-003-QA

Product Number

System Pressure Code Number

The above product number describes a VLC Series with 5,2 bar [75 PSI] control pressure, static signal, 7/8-14 P and EF ports, 3/4-16 CF port, 7/16-20 LS and T ports, 172 bar [2500 PSI] relief valve setting.

Page 66

66 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

VLE In-Line Priority Valves

For comprehensive information on all steering system components “Valves” see Eaton catalog E-VLFL-MLOO1-E

Control Pressure - bar [PSI] / Product Number

Static Dynamic Static Dynamic Static Dynamic

Ports (5) Port Size Signal Signal Signal Signal Signal Signal

4,5 [65] 5,5 [80] 6,9 [100] 8,6 [125] 10,3 [150] 12,8 [185]

P & EF 1 1/16 -12 CF 3/4 - 16 606-1093 606-1294 606-1094 606-1295 606-1095 606-1296 LS & T 7/16 - 20

P & EF 1 1/16 -12 CF 7/8 - 14 606-1046 606-1341 606-1047 606-1342 606-1048 606-1343 LS & T 7/16 - 20

P & EF 1 5/16 -12 CF 7/8 - 14 606-1058 606-1344 606-1059 606-1345 606-1060 606-1346 LS & T 7/16 - 20

P & EF 1 5/16 - 12 CF 1 5/16 - 12 606-1141 606-1347 606-1142 606-1348 606-1143 606-1349 LS & T 7/16 - 20

P & EF 1 5/16 -12 CF 1 1/16 - 12 606-1350 606-1282 606-1351 606-1281 606-1352 606-1283 LS & T 7/16 - 20

P & EF M27 X 2 CF M18 X 1,5 606-1353 606-1354 606-1355 606-1356 606-1357 606-1358 LS & T M12 X 1,5

P & EF R 3/4 - 14 CF R 1/2 - 14 606-1359 606-1360 606-1361 606-1362 606-1363 606-1364 LS & T R 1/4 - 19

Code System Pressure Number bar [PSI]

DD 83 [1200] HE 120 [1725] LA 138 [2000] MC 150 [2175] NC 160 [2300] QA 172 [2500] UA 207 [3000] VD 230 [3325] VK 240 [3475]

High Pressure*

150 l/min [40 GPM] Rated Flow

Relief V alve Qualified for 276 bar [40 0 0 PSI] Max.

Rated CF Pressure is 276 bar [4000 psi]

Rated Inlet and EF pressure is 303 bar [4400 psi]

Page 67

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 67

Steering System Components

VLH In-Line Priority V alves

240 l/min [63 GPM] Rated Flow

Code System Pressure Number bar [PSI]

DD 83 [1200] HE 120 [1725] LA 138 [2000] MC 150 [2175] NC 160 [2300] QA 172 [2500] UA 207 [3000] VD 230 [3325] VK 240 [3475]

High Pressure

For comprehensive information on all steering system components “Valves” see Eaton catalog 11-508.

Control Pressure - bar [PSI] / Product Number

Static Dynamic Static Dynamic Static Dynamic

Ports (5) O-ring Signal Signal Signal Signal Signal Signal

Port Size 5,2 [75] 5,9 [85] 6,9 [100] 7,6 [110] 10,3 [150] 11,4 [165]

P & EF 1 5/8 - 12 CF 1 5/16 - 12 606-1201 606-1288 606-1202 606-1289 606-1203 606-1290 LS & R 7/16 - 20

P & EF 1 5/8 - 12 CF 1 1/16 - 12 606-1368 606-1284 606-1369 606-1285 606-1370 606-1286 LS & R 7/16 - 20

P & EF 1 5/8 - 12 CF 3/4 - 16 606-1189 606-1371 606-1190 606-1372 606-1191 606-1373 LS & R 7/16 - 20

Rated CF Pressure is 276 bar [4000 psi]

Rated inlet and EF Pressure is 296 bar [4300 psi]

Page 68

68 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

VLC, VLE and VLH Priority V alves – Pressure Drop Curves

For comprehensive information on all steering system components “Valves” see Eaton catalog E-VLFL-MLOO1-E

U.S. Patents. Re 26,338; 3,455,210 and 4,043,419 cover circuits using these priority valves. Corresponding foreign patents pending and issued.

VLH Series

VLE Series

VLC Series

Symbols

Page 69

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 69

Steering System Components

Chec k Valves Product Description

These check valves are designed specifically to withstand the rugged duty cycles of a steering system and perform their functions reliably to prevent kickback in the steering wheel.

The check valve is installed directly into the pressure port of Char-Lynn steering control unit. Connection of the hose assembly is either a male 37° end or O-ring face seal (ORS).

Straight 90° elbow configurations are available (see installation drawing next page).

Performance Data

Pressure Drop Curves — Inlet Check Valves

Page 70

70 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Chec k Valves Installation Drawing

Product

Check Valve Dimensions—mm [in.]

Configuration Number A B C D E

37° 608-1003 3/4-16 3/4-16 22,61/22,10 [.89/.87] 43.69/43.18 [1.72/1.70] 14.48/13.46 [.57/.53] 37° 608-1004 9/16-18 3/4-16 22,61/22,10 [.89/.87] 41.15/40.64 [1.62/1.60] 14.48/13.46 [.57/.53]

Straight ORS 608-1007 13/16-16 3/4-16 22,61/21,10 [.89/.87] 39.88/39.37 [1.57/1.55] 14.48/13.46 [.57/.53]

ORS 608-1009 11/16-16 3/4-16 22,61/22,10 [.89/.87] 38.16/37.59 [1.50/1.48] 14.48/13.46 [.57/.53]

90° ORS 608-1013 11/16-18 3/4-16 24,13/23,62 [.95/.93] 37,6/35,5 [1.48/1.40] 41.15/40.13 [1.62/1.58]

Straight

O-ring Face Seal (ORS)

C Hex.

90° Elbow

C Hex.

Page 71

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 71

Steering System Components

Relief V alves

Model 32112 In-Line Relief Valve

Specifications

Max. Flow Through

Relief Valve 132,5 l/min

[35 GPM]

Relief Valve

Setting Range 69–241 bar

[1000–3500 PSI]

Housing Rated Pressure 345 bar [5000 PSI]

Comprehensive Relief Valve Description

(see Eaton Relief Valve Catalog 11-510)

Model 32107 In-Line Relief Valve–Direct Acting Cartridge

Specifications

Max. Flow Through

Relief Valve 57 l/min

[15 GPM]

Relief Valve

Setting Range 47–276 bar

[675–4000 PSI]

Standard Relief

Valve Setting 138 bar [2000 PSI]

Housing Rated

Pressure 345 bar [5000 PSI]

Model 32107 In-Line Relief Valve–Pilot Operated Cartridge

Specifications

Max. Flow Through

Relief Valve 75,7 l/min

[20 GPM]

Relief Valve

Setting Range 103–241 bar

[1500–3500 PSI]

Housing Rated

Pressure 345 bar [5000 PSI]

Page 72

72 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Columns Product Description

Features

• Low friction bearings to carry thrust and side loads

• dust boot to protect against dirt and moisture

• Four jacket types are available

• Two lower ends and ten upper ends are available

• Two different horn wire configurations

• available from 56 to 825 mm [2.2 to 32.5 inch]

• pre-assembled to steering units per your request

SPECIFICATIONS

Rated Tortional 81Nm [60 lb-ft] Rated Bending Moment* 136 Nm [100 lb-ft] Rated Radial Load** 86 kg [150 lb] Rated Axial Load 86 kg [150 lb] Tortional Friction Drag 0,23 kg [2 lb-in] Recommended Wheel Nut Torque 47 Nm [35 lb-ft]

*Bending moments are taken about the plane of the column mounting surface.

**Radial load at the bearing centerline must not exceed the horizontal bending moment rating.

Five Steps for “How to Order Your Column”

1 Select Jacket/Base Type 2 Select Lower Shaft Type 3 Select Upper Shaft End Type 4 Select Length (use suggested standard length) 5 Select Add-On Features

a) Horn Wire b) Wire Ends

•

Please contact your Eaton Representative if any request differs from our catalog offerings.

Shaft End

C of Bearing

Mounting Flange Surface

Use non-soap base grease for column, spline, steering unit interface

Page 73

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 73

100 254,0 [10.00] 120 304,8 [12.00] 140 355,6 [14.00] 160 406,4 [16.00] 026 66,1 [ 2.60] 036 92,3 [ 3.63] 062 157,3 [ 6.19] 081 206,6 [ 8.13] 103 260,2 [10.24] 111 282,8 [11.13] 121 308,2 [12.13] 162 409,3 [16.11] 182 461,1 [18.15] 257 651,6 [25.65] 276 701,9 [27.63] 302 765,9 [30.15] 329 835,7 [32.90] AAA 190,5 [ 7.50] Above Pivot

546,4 [21.51] Below Pivot

AAB 190,5 [ 7.50] Above Pivot

101,6 [ 4.00] Below Pivot

AAC 127,0 [ 5.00] Above Pivot

127,0 [ 5.00] Below Pivot

12-16 Horn Wire Feature 00000 No Horn Wire

(page 79) 1A045 Single Horn Wire

2B045 Two Horn Wires

17 Horn Brush Wire 0 None—Select When No Horn Wire Used

Terminal End D SAE J928 Pin and Double End Connector (page 79) K Blade Receptacle—Insulated

(Compatible with SAE J858a)

18,19 Shaft End Wire 00 None

Terminal 01 One Horn Button (Only with One Horn Wire) (page 79) 02 One Horn Button with Wire Eyelet

(Select with Two horn Wire)

08 Tinned Bare Wire End

20,21 Special Feature 00 None 22 Eaton Assigned

Design Code B For Tilt columns

Nos Feature Code Description Nos Feature Code Description

Steering System Components

Columns Model Code, Ordering Information

The following 22-digit coding system has been developed to identify all of the configuration options for steering columns. Use this model code to specify a steering column with the desired features. All 22 digits of the code must be present when ordering. You may want to photocopy the matrix below to ensure that each number is entered in the correct box.

1,2,3 Product Series ACK Steering Column 4,5 Jacket/Base Type SJ Standard (38 mm [1.50 inch] O.D.)

(page MN Round Series 5 (38mm [1.5 inch] O.D.)

74) HG Heavy Wall (41,4 [1.63 inch] O.D.) Tabbed Flange

SH Standard With flat Flange

(38mm [1.50 inch] O.D.) (No Tabs)

TJ Tilt Column with Flat Flange, Mechanical Push

Button

6 Lower Shaft End 1 12 Tooth Spline for Steering Unit

(see page 3 3/4 inch “D” Section

75) (for Noise Isolator)

7,8 Upper Shaft End AJ Standard for all rigid and tilt columns

(see illustrations Available with or without Horn Wire and specifications MJ Available with or without Horn Wire page DN Not Available with Horn Wire 76, 77) EJ Not Available with Horn Wire

GC Not Available with Horn Wire CL Not Available with Horn Wire PT Available with or without Horn Wire SV Available with or without Horn Wire YM Not Available with Horn Wire

9,10,11 Jacket Length 022 56,6 [ 2.23]

mm [in.] 033 82,8 [ 3.26] (Suggested Std. 058 147,8 [ 5.82] Dim.) 078 197,1 [ 7.76]

099 250,7 [ 9.87] 108 273,3 [10.76] 118 298,7 [11.76] 157 399,8 [15.74] 178 451,6 [17.78] 253 642,1 [25.28] 273 692,4 [27.26] 298 756,4 [29.78] 325 826,3 [32.53] 060 152,4 [ 6.00] 080 203,2 [ 8.00]

Tilt Column

BOLT & NUT KITS

Separate kits are available for purchase to use with steering columns

Metric Cap Screw Kit M10 x 1.5 Thread x 20mm Lenth (Qty 4) 9900157-000 Standard Cap Screw Kit .375-16 UNC Thread x .75" Length (Qty 4) 9900158-000 Metric Jam Nut Kit M18 x 1.5 (Qty 1) 9900159-000 Hex Nut Kit 13/16-20 NEF (Qty 1) 9900160-000 Hex Nut Kit 1 1/2 - 12 UNF (Qty 1) 9900161-000

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

A C K 00

Page 74

74 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Columns Jacket/Base Type

Example—see model code page 73

Position 4-5

SH Standard with flat flange (No Tabs)

Position 9, 10, 11

026 66,1 [2.60] (Dimension X)

*Dimension X—see model code page 73 Position 9, 10, 11 (Jacket Length)

SH Standard Wall

(Available on Square Series 5, Series 10, 20, 25, 40)

SJ Standard Wall (Available on Square Series 5, Series 10, 20, 25, 40)

HG Heavy Wall (Available on Square Series 5, Series 10, 20, 25, 40)

MN (Round Series 5 with End Ports Only)

Position 4-5

40,6 [1.6] Dia.

Shaft End

Position 4-5

40,6 [1.6] Dia.

Dimension X*

44,32 [1.745] Pilot Dia.

44 [1.73] Pilot Dia.

20,3 [.80]

41,4 [1.63] Dia.

Dimension X*

15,2 [.60]

Mounting Surface

Tab (4)

23,6 [.93]

5,77 [.227]

6,4 [.25]

Position 4-5

40,6 [1.6] Dia.

Shaft End

Position 4-5

40,6 [1.6] Dia.

44 [1.73] Pilot Dia.

Dimension X*

23,6 [.93]

5,77 [.227]

44,32 [1.745] Pilot Dia.

Dimension X*

23,6 [.93]

5,77 [.227]

38,1 [1.5] Dia.

Mounting Surface

6,4 [.25]

Shaft End

38 [1.49] Dia.

Mounting Surface

9,4 [.37]

Shaft End

38 [1.49] Dia.

Mounting Surface

9,4 [.37]

Page 75

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 75

Steering System Components

Columns Lower EndType

Example—see model code page 73

Position 6

1 12 Tooth Spline for Steering Unit

Position 6

6,4 [.25]

Column Mounting Flange with Tabs

Column Mounting Flange without Tabs

6,1 [.24]

Column Mounting Flange for Round Series 5 with Side or End Ports

12 Tooth Spline to Fit Char-Lynn

Position 6

18,8 [.74] Min.

107,8/105,6 [4.24/4.16]

3/4 inch “D” Section (for Noise Isolator)

13,54/13,44 [.533/.529]

Steering Control Units

Noise Isolator (Not Icluded)

Upper Shaft End EJ (Ref.)

Page 76

76 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Columns Upper Shaft End

Example—see model code page 73

Position 7-8

EJ (36 Tooth Straight Serration)

Not available with horn wire

Position 7-8

Note: Torque Nut to 41-54 Nm [30-40 lb-ft]

For bending moment calculation when using Eaton wheel product No. 209-1007, wheel rim is 22,1 [.87] above threaded end steering shaft.

Note: Torque Nut to 41-54 Nm [30-40 lb-ft]

For bending moment calculation when using Eaton wheel product No. 209-1007, wheel rim is 22,1 [.87] above threaded end steering shaft.

26,4 [1.04]

12,7 [.50]

26,4 [1.04]

12,7 [.50]

45,34 [1.785]

21,82 [.859] Dia.

.052 : 1

36 Tooth Straight Serration 21,79 [.858] Major Dia.

13/16 - 20 UNF - 2A Thread

45,34 [1.785]

21,82 [.859] Dia.

.052 : 1

36 Tooth Straight Serration 21,79 [.858] Major Dia.

M20 x 1,5 - 6g Thread

Not Available with Horn

ire

16,26 [.640]

45,34 [1.785]

21,8 [.86] 15,2 [.60]

36 Tooth Straight Serration 18,59 [.732] Major Dia.

22,17 [.873] Dia.

10,9 [.43]

R 1,6 [.06] Max.

30,99 [1.220]

9,48 [.373] Dia.

Crosshole

Not Available with Horn

ire

Note: Torque Nut to 41-54 Nm [30-40 lb-ft]

32,3 [1.31]

16,0 [.63]

20,10 [.790] Dia.

57,15 [2.250]

3/4 -16 UNF-2A Thread

22,22 x 4,775 [.870 x .1880] Wide Key

.0625 : 1

Page 77

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 77

Steering System Components

Columns Upper Shaft End Continued

Example—see model code page 73

Position 7-8

YM (.050 : 1 Taper M18 x 1,5 - 6g Thread)

Not available with horn wire

Position 7-8

Not Available with Horn

ire

Note: Torque Nut to 41-54 Nm [30-40 lb-ft]

M16 x 1,5 - 6g Thread

40 Tooth Straight Tooth Serration 17,48 [.688] Major Dia.

Note: Torque Nut to 41-54 Nm [30-40 lb-ft]

M18 x 1,5 - 6g Thread

45,50 [1.790] 29,36 [1.156] 14,27 [ .562]

30,00 [1.181]

15,00 [.590]

36 Tooth Straight Serration 20,55 [.809] Major Dia.

50,5 [1.99]

55,00 [2.165]

17,92 [.705] Dia.

.083 : 1

21,00 [.827] Dia.

.0625 : 1

Not Available with Horn

ire or Tilt

M18 x 1,5 - 6g Thread

26,9 [1.06]

M18 x 1,5 - 6H Thread Jam Nut

Note: Torque Nut to 41-54 Nm [30-40 lb-ft]

M18 x 1,5 - 6g Thread

36 Tooth Straight Serration 21,79 [.858] Major Dia.

32,0 [1.26]

8,9 [.35]

24,90 [.980] 14,00 [.551]

52,1 [2.05]

23,2 [.913] Dia.

5 [.197] x 6,5 [.256] Woodruff Key

.050 : 1

37,3 [1.47] Dia. Washer

16,0 [.63]

47,0 [1.850]

21,55 [.848] Dia.

.052 : 1

Page 78

78 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Columns Tilt Column

Position 9 10 11 Dim. A Above Pivot Dim. B Below Pivot

A A C 127,0 [ 5.00] 127,0 [ 5.00] A A B 190,5 [ 7.50] 101,6 [ 4.00] A A A 190,5 [ 7.50] 546,4 [21.51]

*Dim. A (minimum) above pivot is 165,1 [6.5] (with one horn wire)

**Dim. A (minimum) above pivot is 203,2 [8.0] (with two horn wires)

36 TOOTH STRAIGHT SERRATION (7/8 X 36) .858 .002 MAJOR

ø .816 .002 ROOT 90 1 INCL. ROOT ANGLE .9488 .002 ø OVER TWO .0625 ø PINS

1/4" BLADE RECEPTACLE FULLY INSULATED

5 TILT POSITIONS

.8125-20 UNEF-2A

.052:1

.859 .001 START ø

1.50 ø

2.47

4.66

1.04 .01

.50 .01

4.0"

1.785 .035

RUBBER BOOT

(5.75" MINIMUM) FOR

SINGLE HORN WIRE AND

3.625 MINIMUM

FOR NON HORN WIRE

(3.25" MINIMUM)

2.01 .05

.80

1.745

.25 .03

.227 .015

.800

ø FLAT ROOT SIDE FIT

12 TOOTH, 16/32 PITCH

SAE J928 TYPE I .156

ø PIN TYPE WIRE END WITH DOUBLE END SOCKET CONNECTOR

1.50

ALSO AV AILABLE WITH

1.63

ø HEAVY DUTY TUBE

CUSTOMER TO SPECIFY LENGTH BELOW PIVOT

CUSTOMER TO SPECIFY LENGTH ABOVE PIVOT

LENGTH "B"

LENGTH "A"

"PUSH" TO RELEASE TILT LOCK

How to Order your Tilt Column:

Model Code — Steering Columns

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

A C K T J A J B

Page 79

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 79

Steering System Components

Columns Horn Wire Electrical

Example—see model code page 73

Position 12-16

1A045 Column with one horn wire

Single Wire

Position 18-19

1A045

Position 12-16

Position 18-19

K or T

Position 17

T wo Wire

Position 18-19

2B045

Position 12-16

Position 18-19

K or T

Position 17

28,4 [1.12]

9,52 [.375] Dia.

Single Wire

Column with 1 Wire

Tinned Bare Wire End

9,52 [.375] Dia.

4,8 [.19] Dia. Stud Eyelet Type Wire End

28,4 [1.12]

40,6 [1.60]

Two Wires

One Horn Button with Wire Eyelet (Select with Two Horn Wires)

K — Blade

Receptacle Insulated — Compatable with 6,4 [.25] Blade Per SAE J858a

35,8 [1.41]

114,3 [4.50]

T — SAE J928 Type I 3,96 [.156]. Female Wire End

Column with 2 Wires

Tinned Bare Wire Ends

K — Blade

Receptacle Insulated — Compatable with 6,4 [.25] Blade Per SAE J858a

114,3 [4.50]

T — SAE J928 Type I 3,96 [.156] Dia. Female Wire End

112,0 [4.41] 35,8 [1.41]

Page 80

80 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Columns and Wheel Mounting Product Information

Series 20, 25

Must use four bolts through mounting bracket or bulkhead.

Square Series 5 and Series 10

Must use two bolts through mounting bracket or bulkhead and two bolts through just the steering column or four bolts through mounting bracket or bulkhead.

Inspect for Minimum Clearance at Assembly

Steering Wheel Hub

Torque To 4,7 da Nm [35 lb-ft]

9,5 [.375] Dia. on 3.25 [82,5] Dia. Bolt Circle (4)

Port Face

1,6 mm [.06 in.] Min.

Steering Column

Two Bolts 3/8 -16 NC x

30,5 [1.20]

Dim.

30,5 [1.20] Max. 27,2 [1.07] Min.

Two Bolts 3/8 -16 NC x 19,0 [.75] (Supplied with Column)

45°

9,5 [.375] Dia. on 3.25 [82,5] Dia. Bolt Circle (4)

45°

44,4 [1.75] Dia.

Port Face

44,4 [1.75] Dia.

Mounting Bracket or Bulkhead

Four Bolts 3/8 -16 NC x

30,5 [1.20]

Mounting Bracket or Bulkhead

Dim.

30,5 [1.20] Max. 27,2 [1.07] Min.

Page 81

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 81

Steering System Components

Columns Product Information

Series 40

Must use three bolts Into steering control unit mounting bosses opposite port face.

Round Series 5

Must use three bolts minimum.

59,00 [2.323] Dia.

Cap Screw (1) M6 x 1,0

41,5 [1.635] Pilot Dia.

Mounting Bracket or Bulkhead

81,3 [3.20]

40,7 [1.60]

M6 x 1,0-6H 18,5 [.73] Min. Deep (4)

Note: Series 40 is too heavy for column mounting — use column with or without mounting tabs

13,4 [.53] Max.

Cap Screw (3 or 4) M6 x (W + 12,2 [.48])

5,8 [.23]

W Dim.

12,2 [.48] Max. 7,5 [.30] Min.

15,0 [.59]

12,9 [.51]

67,5 [2.66]

Dim.

Three Bolts 1/2-13 UNC x (Z

13,4 [.53])

Mounting Bracket

Page 82

82 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Steering Wheels and Accessories

Nut, Hex Upper Shaft End Configuration Thread Part Number (See Page xx, xx) Size

14517 PT, SV M18 x 1,5 14593 MJ M20 x 1,5 14603 CK, CL M16 x 1,5 21084 AJ 13/16-20 UNF

Steering Wheel No. 209-1007

Molded black wheel with three equally spaced spokes, (relatively flat, without recessed hub) diameter 430 mm [17 inch] for column with upper shaft end AJ or MJ.

Note: Steering wheel hub has tapped holes for wheel puller.

Horn Button Kit No. 208-1013

For Char-Lynn®steering column with serrated upper shaft end AJ or MJ and Char-Lynn

430 mm [17 inch] steering wheel.

Cap No. 209-1005

Char-Lynn®steering wheel hub cavity cap, for no horn installations used on steering wheel 209-1007.

Steering WheelHorn Button Kit

Cap

Nut, Hex

7 2

3 5

4 1

1 Weather Cover 2 Horn Button 3 Contact Cup 4 Horn Button Spring 5 Contact Cup 6 Screw 7 Base Plate Assembly

Steering Wheel Hub Section

Page 83

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 83

Steering System Components

Steering Wheels and Accessories

New Steering Wheels

Eaton Char-Lynn‚ offers three new steering wheels each with different features:

209-1022: 350mm [14in] diameter, 3-spoke steering wheel with horn button option.

209-1023: 362mm [15in] diameter, 3-spoke steering wheel with knob standard and optional horn button.

209-1024: 400mm [16in] diameter, 3-spoke steering wheel with soft feel and horn button option.

Note: All steering wheels are compatible with column upper shaft end AJ.

Horn Buttons

9900416

For Char-Lynn‚ steering column with upper shaft end AJ and steering wheel 209-1022 and 209-1023.

9900417

For Char-Lynn‚ steering column with upper shaft end AJ and steering wheel 209-1024.

Caps

9900308

Char-Lynn‚ steering wheel hub cavity cap, for no horn installations. Used on steering wheel 209-1022 and 209-1023.

9900415

Char-Lynn‚ steering wheel hub cavity cap, for no horn installations. Used on steering wheel 209-1024.

Page 84

84 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Steering Wheels and Accessories

Want to Make your Own Column? You Must use these Spline Specs. Lower Shaft End

This Noise Isolator is Available from Eaton— Part Number 208-1017-002

Fit Flat Root Side Fit Number of Teeth 12 Pitch 16/32 Pressure Angle 30° Class of Fit Special Circular Tooth Thickness

Max. Effective 2,428 [.0956] Min, Actual 2,362 [.0930]

Splined End—AISI 8620 Mt'l Case hardened to RC 40-50

Can be press fit and welded into a 22,22 [.875] OD x 2,16 [.085] wall steel tube.

This Splined Lower Shaft End Part (as shown below) is Available from Eaton—Part Number 8063

12 Tooth Spline Specification (left)

See Note Below

82,6 [3.25] Dia.

See Note Below

Note: Two screws (3/8-24 UNF x 31,8 [1.25] long — not included) are required to join isolator to mating steering columns. Torque screws to 41 Nm [360 lb-in].

Major Dia. 20,40/20,24 [.803/.797]

Minor Dia. 16,97/16,59 [.668/653]

Max. Effective 2,428 [.0956] Min. Actual 2,362 [.0930] ( Circular )

Form Dia. 17,45 [.687]

Pitch Dia. .7500 [19,05]

Upper Shaft End EJ (Ref.)Lower End Type 3 (Ref.)

61,0 [2.40]

42,2 [1.66]

25,40 [1.000]

22,23 [.875] Dia.

18,09/18,00 [.712/.709] Dia.

22,4 [.88] 9,4 [.37]

16,38/15,88 [.645/.625] Dia.

12 Tooth Spline to Fit Char-Lynn SCU

25°

Involute Spline (see Spec.)

1,0 [.04]

30° Two Places

Page 85

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 85

Steering System Components

EH Proportional Loadsensing Steer V alves

Description

EH proportional steer valves are commonly used for GPS steering, joystick steering, and autoguidance.

This is achieved by a manifold containing a shuttle valve, a counterbalance valve, and a KDG proportional control valve.

Model Code Description

DSV2-8

Shuttle V alv e

CBV2-10

Counterbalance Valv e

KDG4V3S

Proportional Control Valve

(For more information see Vickers® Screw-in Cartridge Valves Cat. V-VLOV-MC001-E2 and Vick ers Proportional Valves Cat. 539.)

Features / Applications

• features counterbalance valves on the turn ports to minimize leakage and improve stability. The counter balance valves make it particularly suitable for articulated machines and machines with hydraulic Tie Rods

- such as sprayers.

• The valve also features a load sense drain and shuttle checks to resolve the load signal with the steering Orbitrol, making it suitable for use in Dynamic or Static signal systems.

SPECIFICATIONS

Max. System Pressure 210 bar [3000 PSI] Rated Flow (@5 bar

[72.5 PSI] single pass) 19 l/min [5 GPM]

Ordering Information

Choose one of the Part Numbers with different Port Options.

Ports

Part Number P,T R, L LS

5991008-001

/4-16 UNF

/4-16 UNF 7/16-18 UNF 5991010-001 M18 x 1,5-6H M18 x 1,5-6H M12 x 1,75-6H 5991012-001

/4-16 UNF 9/16-18 UNF 7/16-20 UNF

Page 86

86 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Four Wheel Steer Switc hing V alves

Description

Four Wheel Steer Switching Valves provide three different types of steering by energizing and de-energizing two DG4V-3 valves. DG4V-3 valves are high performance, solenoid operated directional control valves.

• T wo Wheel Steering: Energize Solenoid S1

• Four Wheel Steering: Energize Solenoid S2 + S3

• Crab Steering: Energize Solenoid S2 + S4

(For more information on these two valves, see Vickers® Solenoid Operated Directional Valv es Cat. GB-C-2015.)

Applications

• T elehandlers

• Sprayers

• Rough terrain Cranes

• Backhoe Loaders

Ordering Information

1. Reference Assembly Number: 02-411452

Coil Rating 12V DC

Ports A, B, P, T 3/4-16 UNF

2. Choose Coil Rating:

12V DC 24V DC

3. Specify Ports if different

than above PN.

DG4V-3 Solenoid Operated Directional Valves

SPECIFICATIONS

Rated Flow 80 l/min [21 GPM] Max. System Pressure 210 bar [3000 PSI] Internal Leakage when A or B pressurized in two-wheel drive 40 ml/min (@200bar, 50ºC) [2.44 in3/min] Pressure drop (@45 l/min [12 GPM])

Two Wheel Steering 5 bar [72.5 PSI] Four Wheel Steering 20 bar [290 PSI] Crab Steering 20 bar [290 PSI]

Electrical Connection Type AMP

FRONT

BACK

Page 87

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 87

Steering System Components

Flow Divider Valves

Model 32306 Priority Flow Divider

Specifications

Rated Input Flow 96,6 l/min

[25 GPM]

Rated Pressure 172,4 bar

[2500 PSI]

Max. Pressure Drop

Through Valve at Rated Input Flow 4,5 bar [65 PSI]

Model 32501 Proportional Flow Divider

Specifications

Rated Input Flow 113,6 l/min

[30 GPM]

Rated Pressure 172,4 bar

[2500 PSI]

Max. Pressure Drop

Through Valve at Rated Input Flow 8,6 bar [125 PSI]

Model 32700 Variable Priority Flow Control

Specifications

Rated Input Flow 75,7 l/min

[20 GPM]

Rated Pressure 172,4 bar

[2500 PSI]

Max. Pressure Drop

Through Valve at 56,8 l/min [15 GPM] Input 4,0 bar [48 PSI]

Max. Controlled

Flow 36,0 l/min

[9.5 GPM]

Controlled Flow

Adjustment Range 5,7 - 36,0 l/min

[1.5 - 9.5 GPM]

Relief Valve Factory

Setting 151,7 bar

[2200 PSI] at 36,0 l/min [9.5 GPM]

Comprehensive Flow Divider Description

(see Eaton Flow Divider Catalog E-VLFL-MC0 01-E)

Excess Flow

Controlled Flow

Return

Inlet Controlled

Flow

OUT

PRIOR

Page 88

88 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Steering System Components

Brake V alve

Eaton Hydraulics’ loadsensing brake valve makes power brakes an economical and efficient feature on lift trucks.

While power brakes in lift trucks can aid productivity, incorporating them into lift trucks has traditionally been expensive. The need for additional flow meant extra plumbing, plus the addition of a dedicated pump or a high pressure accumulator for the brake circuit. The increased system size also meant extra demand on the engine, resulting in reduced fuel economy.

The Eaton brake valve provides a better solution. Used in conjunction with load-sense steering and a priority valve, it can work with an existing system. A dedicated flow source is not required. It also ensures that brakes and steering have priority over the hoist circuit.

Eaton’s new brake valve has a shuttle in the sensing port which allows the priority valve to determine whether brakes or steering require higher pressure. The priority valve then shifts to provide adequate flow and pressure for the function with the greatest needs. An integral pressurecompensated flow limiter provides low flow for brake modulation. This feature of the brake valve allows simultaneous braking and steering without steering interruption or pedal kick.

The design of the circuit also increases efficiency. The control flow line of the circuit is connected in parallel to both the brake valve and the steering unit. Thus, brake and steering pressures are not additive during simultaneous operation. The existing steering pressure is usually enough to provide full power braking.

Another feature of the Eaton brake valve is that it accommodates dead engine braking. The valve contains a large internally cored area that acts as a reservoir, providing oil for brake actuation in the manual mode. The valve design allows the volume and pressure required for manual braking to be generated without excessive pedal force. Thus, the load-sensing brake valve offers the benefits of powered brakes and manual brakes in a single package, eliminating the need for an accumulator.

Features

• No dedicated pressure source (separate pump or accumulator) required when the Eaton Power Brake Valve is used

• Reduces plumbing requirements

• Efficient—no parasitic loss

• Self-contained compact package

• Two-stage master cylinder with built-in reservoir provides dead-engine braking

• Lower input efforts and reduced pedal travel for braking

• Optional pilot operated check valve

Specifications—Valve

Max. Rated Pressure 205 bar [3000 PSI] Rated Flow 11 l/min [3.0 GPM]

For more information, contact Eaton Mobile Valves team.

Page 89

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 89

Steering System Components

T Series Hydraulic Motors

Char-Lynn T Series low speed, high torque Geroler motor developed with low speed/low leakage valving specifically for steering applications (see Catalog E-MOLO-MC001-E2 Low Speed High Torque Motor page B-4-10 Code AB, Position 11-12).

Pressure Capability

Continuous 155 bar [2250 PSI]

Intermittent 190 bar [2750 PSI] Speeds up to 1055 RPM Torque

Continuous 440 Nm [3905 lb-in]

Intermittent 510 Nm [4515 lb-in] 11 Displacements 36 cm3/r [ 2.2 in3/r ]

to 370 cm3/r [22.6 in3/r ]

Comprehensive T Series Motor Description

(See Char-Lynn General Purpose Motors H, S, T Series Catalog E-MOLO-MC001-E2)

Steering control unit (displacement determines turns lock to lock for a given motor displacement)

Hydraulic Reservoir

Steered Wheel Gear or Chain Drive

Pump

Electric Propel Motor

Steering work lines (switch lines to reverse steering)

Motor

Geroler steering motor (displacement determines working pressure for required torque)

Page 90

90 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Sizing and Application—

Ackermann Type Steering

Step One: Kingpin T orque

0.7

0.6

0.5

0.4

0.3

0.2

0.1

Minimum Effective Radius Arm

0.2 0.4 0.6

Typical values based on rubber tired vehicles on dry concrete.

T = w • f T = Total Kingpin Torque required to steer axle. W = Vehicle Weight supported by the steered axle.

f = Coefficient of friction (dimensionless). Based on 0.7 as a Maximum. Determine from chart at left.

B = Nominal width of the tire print (see diagram above). E = Kingpin Eccentric (use nominal tire width).

0.8 1.0 1.2

E/B

+ E

Weight

Kingpin

Actual Length

Radius Arm

Page 91

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 91

Sizing and Application

Ackermann Type Steering Continued

( )

Step T wo:

Force Required F =

r F = Force required for the axle. T = Kingpin torque as determined in Step 1.

The value calculated in Step 1 is the total torque for the axle. If the steered axle is power driven, double this value to approximate the additional dynamic loads.

r = Effective radius arm about the kingpin axis at which

the cylinder force is applied. The effective radius is the minimum distance from kingpin to the axis of the cylinder … not the actual length of the arm.

Cylinder Area

A =

F P

A = Cylinder area for the axle cylinder set. F = Force required P = Hydraulic pressure For vehicle with a steered axle that can never be overloaded

use 80% of the steering circuit relief valve setting. For moderately loaded vehicles use 60%. For vehicles that can be severely overloaded use 30%.

Cylinder Diameter

Once the required cylinder set area is determined, the cylinder diameter can be calculated.

D = Inside diameter of cylinder. d = Rod diameter as required.

Cylinder Stroke

S = Stroke Length The cylinder stroke is determined by axle geometry. That is, the

required stroke is a function of the radius arm and the total angle through which the arm turns.

( )

Differential Cylinder Cross Connected Cylinder

D =

Note:

Balanced Cylinder Opposed Cylinder

D =

Differential Cylinder (Large Volume)

Differential Cylinder (Small Volume or Balanced Cylinder)

Cross Connected Cylinder

Cylinder Volume

The volume of oil required to move cylinder rod(s) through the entire stroke.

( )

+ d

.15

V = S x

V = S x V = Volume

D =

x D

—

( )

V = S x A

2A d

Page 92

92 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Sizing and Application

Ackermann Type Steering Continued

Step Three:

Selecting Steering Unit Displacement

Before proceeding further, a decision must be made as to the number of steering wheel revolutions desired for the application to steer the axle from full one side to the other. Depending on vehicle usage, this will vary, normally 2 1/2 to 5 1/2 with 4 being a good typical value

Displ.

N V = Volume full stroke N = number of steering wheel revolutions lock

to lock

Once this calculation is complete, select the closest standard steering unit displacement from the catalog information.

Now the number of steering wheel revolutions should be recalculated.

N =

displ

displ. = Steering unit displacement per revolution. Note: for different cylinder applications, the cylinder volume will

be different for right and left turns and the value N will vary accordingly .

Step Four:

Calculating Required Pump Flow

Pump sizing is important to assure adequate power for steering under all operating conditions. The required pump flow can be calculated by the following equation.

QP= Rmax. x displ. Q

(L/min): Required pump flow.

Rmax = Max. steering wheel input of steering control

unit (SCU).

displ. = Displacement of steering control unit per

revolution.

Before proceeding to evaluation required pump flow the maximum required steering wheel speed must be determined. Typically 120 revolutions per minute (RPM) is used for Rmax.

•

It is important at engine low idle condition that the maximum steering wheel speed should be more than 60 rpm.

•

For engine normal idle condition, maximum steering wheel speed should be more than 100 rpm if possible.

•

When using open center SCU connected with pump directly, maximum pump flow should be less than

1.4 times of SCU rated flow. Higher flow into SCU increases pressure-loss of the steering system. If higher flow is unavoidable, install a flow divider valve into the system or use a load sensing system.

Page 93

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 93

Sizing and Application

Articulated T ype Steering

Eaton’s Hydraulic Division has developed a computer program to assist articulated vehicle designers with a steering system analysis. This analysis can provide basic system sizing, pressure requirements or a complete system analysis including dynamic characteristics.

This analysis is intended to be used as a guide only and is not to be used solely as the final determination of system design. Other factors and variables will have to be considered.

To receive output from this program, provide the required information by using the form on the following page.

Contact an Eaton Hydraulics Division Sales Representative or send it to:

Marketing Product Manager—Steering Eaton Hydraulics 14615 Lone Oak Rd. Eden Prairie, MN 55344

Twin Cylinders with a Single Wheel Set

Forward

CG1

Twin Cylinders with a Dual Wheel Set

CG1

Forward

CG2

OS1

OS2

OS1

OS2

CG2

Page 94

94 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Page 95

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 95

Sizing and Application

Articulated V ehicle Steering Analysis

Manufacturer __________________________________________________________________________________________________________

V ehicle T ype____________________________________________________________________________________________________________

Model Number ________________________________________________________________________________________________________

Completed By____________________________________________________________________________ Date________________________

Indicate Unit of Measurement Used ______________________________________________________________________________________

Clip out this form or photocopy when needed.

1. Turns Lock to Lock ____________________________________

2. Time Lock to Lock ____________________________________

3. Max. Steering Wheel RPM______________________________

4. Cylinder Rod Diameter__________________________________

5. Cylinder Bore Diameter ________________________________

6. Cylinder Stroke ________________________________________

7. Pump: GPM Hi Idle ____________________________________ GPM Lo Idle __________________________________________

8. Steering Relief Pressure ________________________________

9. Auxiliary Relief Pressure ________________________________

10. Hydraulic Schematic (attach) ____________________________

11. B1 __________________________________________________

12. B2 __________________________________________________

13. C1 __________________________________________________

14. C2 __________________________________________________

15. E1 __________________________________________________

16. E2 __________________________________________________

17. S1 __________________________________________________

18. Weight - Front Axle Unloaded ____________________________________________

19. Weight - Rear Axle Unloaded ____________________________________________

20. Weight - Front Axle Loaded ______________________________________________

21. Weight - Rear Axle Loaded ______________________________________________

22. Articulation Angle (lock to lock) __________________________

23. Steering Circuit Line Size, Lengths, Type, Location (please note on schematic ref. 10.) ______________________________

24. Is Steering Through Brakes Statically Required? ____________________________________

25. Are Locking Differentials Used? Front ________________ Rear ______________ Both ______________________

26. Is There A Differential Between the Front and Rear Differentials? Yes ______________ No __________________

27. CG1 (Center of Gravity) ____________________________________

28. CG2 (Center of Gravity) ____________________________________

29. OS1 (Operator Seat)____________________________________

30. OS2 (Operator Seat)____________________________________

31. Weight - Front Bogey ______________________________________

32. Weight - Rear Bogey ______________________________________

33. I1 Mass Moment of Inertia (about CG1) Front ______________________________________________________

34. I2 Mass Moment of Inertia (about CG2) Rear__________________________________________________

35. Tire Si ze ______________________ Pressure______________________ Width ____________________________ B allast________________________

Note: 1-10 Should always be completed; this information is needed for

basic steering system sizing.

1-26 Needed for sizing and an analysis of steering pressure

characteristics.

1-35 Needed for a full steering system analysis including

dynamic characteristics.

Page 96

96 EATON Char-Lynn Steering Catalog C-STOV-MC0 01-E1 July 2006

Page 97

EATON Char-Lynn Steering Catalog C-STOV-MC001-E1 July 2006 97

Sizing and Application

Articulated Vehicle Steering Analysis

Manufacturer __________________________________________________________________________________________________________

V ehicle T ype____________________________________________________________________________________________________________

Model Number ________________________________________________________________________________________________________

Completed By____________________________________________________________________________ Date________________________

Indicate Unit of Measurement Used ______________________________________________________________________________________

Clip out this form or photocopy when needed.

1. Turns Lock to Lock ____________________________________

2. Time Lock to Lock ____________________________________

3. Max. Steering Wheel RPM______________________________

4. Cylinder Rod Diameter__________________________________

5. Cylinder Bore Diameter ________________________________

6. Cylinder Stroke ________________________________________

7. Pump: GPM Hi Idle ____________________________________ GPM Lo Idle __________________________________________

8. Steering Relief Pressure ________________________________

9. Auxiliary Relief Pressure ________________________________

10. Hydraulic Schematic (attach) ____________________________

11. B1 __________________________________________________

12. B2 __________________________________________________

13. C1 __________________________________________________

14. C2 __________________________________________________

15. E1 __________________________________________________

16. E2 __________________________________________________

17. S1 __________________________________________________

18. Weight - Front Axle Unloaded ____________________________________________

19. Weight - Rear Axle Unloaded ____________________________________________

20. Weight - Front Axle Loaded ______________________________________________

21. Weight - Rear Axle Loaded ______________________________________________

22. Articulation Angle (lock to lock) __________________________

23. Steering Circuit Line Size, Lengths, Type, Location (please note on schematic ref. 10.) ______________________________

24. Is Steering Through Brakes Statically Required? ____________________________________

25. Are Locking Differentials Used? Front ______________________ Rear __________ Both ______________________

26. Is There A Differential Between the Front and Rear Differentials? Yes __ No ________

27. CG1 (Center of Gravity) ____________________________________

28. CG2 (Center of Gravity) ____________________________________

29. OS1 (Operator Seat)____________________________________

30. OS2 (Operator Seat)____________________________________

31. Weight - Front Bogey ______________________________________

32. Weight - Rear Bogey ______________________________________

33. I1 Mass Moment of Inertia (about CG1) Front ______________________________________________________

34. I2 Mass Moment of Inertia (about CG2) Rear__________________________________________________

35. Tire Si ze ______________________ Pressure______________________ Width ____________________________ B allast________________________

Note: 1-10 Should always be completed; this information is needed for

basic steering system sizing.

1-26Needed for sizing and an analysis of steering pressure

characteristics.

1-35Needed for a full steering system analysis including

dynamic characteristics.

Page 98

Eaton

14615 Lone Oak Road Eden Prairie, MN 55344 USA Tel: 952 937-9800 Fax: 952 974-7722 www.hydraulics.eaton.com

Eaton

20 Rosamond Road Footscray Victoria 3011 Australia Tel: (61) 3 9319 8222 Fax: (61) 3 9318 5714

Eaton

Eaton Fluid Power GmbH Dr.-Reckeweg-Str. 1 D-76532 Baden-Baden Germany Tel: +49 (0) 7221 682-0 Fax: +49 (0) 7221 682-788

Eaton Compressor & Fabrication C-STOV-MC001-E1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual