Norton Type CTU and LCTU Cylindrical Grinding Machines - Manual Grinder, Cylindrical

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ORTON

TRADE MARK RCO, U. S. PAT. OFF.

MACHINES

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6" TYPE CTU

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10" TYPE LCTU

CYLINDRICAL

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GRINDERS

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INSTRUCTION AND PARTS MANUAL

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Tnv COMPANY

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WORCESTER 6, MASS.

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norton

machines

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6"

TYPE CTU

Cylindrical

Plain and Semiautomatic

also

Grinding

Machines

10" TYPE LCTU Machines

INSTRUCTION MANUAL No. 429-2

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NORTON

COMPANY • WORCESTER

6, MASS.,

U. S. A.

FOREWORD

The purpose of this Manual is to acquaint the user with the

fundamental functions and adjustments of NORTON 6" Type CTU Plain and

Semiautomatic Cylindrical Grinding Machines.

It also covers 10

actual swing capacity, are identical to the 6" Type CTU.

In the Parts Section, a procedure for ordering or for correspondence

with regard to replacement parts is outlined. Adherence to this will avoid

unnecessary delays.

The descriptions, illustrations, and specifications given in this Manual
were correct at the time of printing. However, since the policy of NORTON
COMPANY is to constantly improve its machines, those built at later dates
may differ from these details.

” Type LCTU Machines, which, other than in

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NORTON COMPANY, WORCESTER 6, MASACHUSETTS, U.S.A.

Chicago 32, Illinois . .
Cleveland 3, Ohio . .
Detroit 8, Michigan

Hartford 7, Connecticut

New York Area ....

Dealers in all principal cities

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4737 So. Christiana Avenue
1306 East 55th Street
5805 Lincoln Avenue
1007 Farmington Avenue

North & Green Streets

Teterboro, N. J.

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TABLE OF CONTENTS

SECTION I - INITIAL SET-UP AND ADJUSTMENT

Location
Unpacking the Machine
Lifting the Machine
Setting-Up

Assembly of Parts

Electrical Connections . . . .

Headstock and Footstock

Wheel Sheaves

Mounting the Grinding Wheel

Wheel Balancing
Filling the Oil Reservoirs . . .
Oiling .

Grinding Coolant

Operation Experimenting . . .

SECTION II - LUBRICATION

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Viscosity Rating
Hydraulic and Circulating Systems

Wheel Spindle

Grease Selection

Oil Dilution

SECTION III - UNIT CONSTRUCTIONS

Table and Taper Adjustment

Headstocks

Footstock

Wheel Feed ..............................................................................

Power Wheel Head Traverse (Semiautomatic Machine)

Automatic Grinding Feed (Semiautomatic Machine) .

Automatic Feed at Table Reversals (Plain Machine)

Wheel Spindle Reciprocating Attachment

Work Start-Stop Unit

Hydraulic and Lubricating Pump Units

Hydraulic Oil Strainers

Wheel Spindle Bearings Adjustment

Wedge Bolts and Spanner Nuts

Bearing Temperature

Spindle End Thrust Adjustment

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SECTION IV

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NORTON 6”

Operating Arrangements

SECTION V

NORTON 6" Type CTU Semiautomatic Machine

Operating Arrangements

SECTION VI - GRINDING PRINCIPLES AND GENERAL PROCEDURE

Finish Factors

Wheel Truing
Use of the Steadyrest
Work Location

Adjustment for Taper
Wheel Selection
ALUNDUM* Abrasive

32 ALUNDUM* and 38 ALUNDUM* Abrasives ....

57 ALUNDUM* Abrasive
CRYSTOLON* Abrasive
Factors Affecting Selection

Index Setting -- Wheel Wear
Wheel Balance
Center Examination

Grinding Compounds
Cleaning
Spindle Speed
Wheel Speed Changes

Work Speed
Traverse Speed
Vibration

Grinding Hints

Deep Groove or Shoulder Grinding Attachment . . . .

SECTION VII ~ WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

Type CTU Plain Machine

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Operation
Fast Traverse

Fast Reversal

Automatic
Adjustments
Instructions for Setting Up
Maintenance

SECTION VIII

Parts . . .

♦Trodo Marks Rag. U.S. Pat. Off.

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Downfeed . .

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LIST OF ILLUSTRATIONS

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INSTRUCTION SECTIONS

NORTON 6" x 18" Type CTU Semiautomatic Machine

Right end view of Machine (Covers removed) ....

Lubrication
Lubrication

Complete Wheel Feed Unit

Plan view -- Wheel Spindle Housing

Operating Controls -- Plain Machine

Operating Controls -- Semiautomatic Machine . . .
Wheelhead Mounted. Automatic Truing Device

PARTS SECTION

Knife Edge Metering Valve
Headstock -- A.C
Headstock -- D.C
Footstock
Wheel Guard and Parts
Wheel Slide and Parts
Reciprocating and Shoulder Grinding Attachment
Wheel Feed Cylinder
Wheel Feed Apron

Feed Screw and Parts

Combination
Push Button Apron and Cycle Control Mechanism . . .
Table Traverse Cylinder
Table Control Valve
Main Control Valve Parts

Hand Traverse Apron ......................................................................

Miscellaneous Mechanisms
Wheelhead Mounted Automatic
Booster Mechanism Wheelhead Mounted Truing Device
Bearings and Rollers Wheelhead Mounted Truing Device

Chart
Circuit Diagram

&

Diamond Tool Holder

Valve

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Truing Device

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Turn counterclockwise to open belt

1.
guard cover

Headstock clamping nuts

2.

Work rotation control lever

3.

Motor push buttons

4.

Electric timer *

5.

Table traverse hand wheel

6.

Table reverse lever

7.

Truing and grinding speed controls

8.

Wheel feed manual control lever

9.
Table dwell controls

10.
Selector for semiautomatic or plain

11.
operation*

Table stop-start and truing lever

12.

Control for amount of wheel feed at table

16.
reversals (adjustable from zero to . 003”)

Automatic feed rate control*

17.
Steel tape type base way guards

18.

"One Lever" control for starting grinding

19.
cycle*

Table swivel adjustment. Turn clockwise

20.

to move right end of table toward grinding
wheel

Footstock spindle binder

21.

Footstock spindle control lever

22.

23.

24.

Filter for spindle lubricant

Spindle lubricant sight glass (one for each
bearing). Lubricant stream must be continuous

when wheel is running.

Coolant control lever,

25.

For manual operation

of coolant flow.

W heel feed clutch lever

13.
Wheel feed positive stop

14.
"Click-Count" wheel feed index.

15.
Each click on clockwise rotation

represents amount of feed to

.0001" work diameter reduction,

in knob and rotate to make settings in

"tenths".

obtain

Push

Electrical control enclosing case

26.

NOTE: Controls marked * are on Semiautomatic

Machines only.

Spindle

Oil Reservoir Drain

«

Lines To Automatic

Wheel Quard Type
Device

Table

(cx+ra)

Bleeder

(One at each

Flow
Ways

Pressure

Ways

Coni-rol Valves

LubricaTion

Relie-f Valve

Lubrication

Ways Lubrican+
Ways

Lubricarrt Reservoir/

Truind

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Valve

end)

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Sys“tem^<

Pressure 4-GLbs.

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Hydraulic oil

Ways

Lubrican-t

Hydraulic Sys“tcnn

(Hydraulic Oil Pressor® Should Be Approx, i 75 Lbs.)

FiH-er

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Fi Iter

Relie-f Valve

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Hydraulic

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si^hT

Reservoir

QSass

N 6451

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SECTION I.

LOCATION

Erecting drawings are sent with every machine shipped from the
factory for the assistance of the millwright in setting up our machines.
In setting up these machines, care should be taken to provide ample
clearances.

Although it is not imperative that these machines be set on a

concrete floor, this type is preferable where precision work is to be done.
If a wooden floor is used, make sure it does not sag or transmit vibrations
from moving trucks or adjacent machinery. Also be prepared to relevel
the machine from time to time as a check on floor settlement.

UNPACKING THE MACHINE

Care should be exercised in removing the machine from the box

or skid in which it is shipped. All containers, blocking, or skids should
be removed with caution.
blows on the container or skids should be avoided, since the accurately

constructed machine might be injured or thrown out of adjustment.

entire shipment should be checked against the packing list, and any shortage

reported at once. See that no small parts are thrown away, mislaid, or

lost.

INITIAL SET-UP AND ADJUSTMENT

In the event that heavy tools are used, direct

The

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LIFTING THE MACHINE

The three-point method of lifting should be used. Place slings
around short bars, thrust into the large cast holes in ends of the base and
place a hook under the shelf at the rear of the coolant tank. Hemp rope,
wire rope, or steel chains may be used, with rope being given the
preference. Be sure that kinks or knots do not tend to lift the table or
damage any portions of the machine while lifting.

SETTING UP

NORTON 6" Type CTU and 10" Type LCTU machines rest on three
pads cast into the base. With the use of steel shims and an accurate spirit
level, shim the pads as necessary in order to level the machine perfectly in
both directions. Use the table top or ways as planes.

NOTE : Under no circumstances should a machine resting on a concrete
floor be grouted into place!

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assembly of parts

Assemble all guards, pipes, and the coolant hose as received
separately with the machine. Refer to the pictures in this manual if
assistance is needed in determining their location.

ELECTRICAL CONNECTIONS

Care should be exercised in making the electrical connections.
This task should be entrusted only to a competent electrician. Refer to the
wiring diagram furnished with the machine.

The operating mechanism of the disconnect switch on the control
panel is interlocked with the enclosure door. The door handle must be in the
"OFF" position before the enclosure door can be opened.

Connect the incoming power lines to the terminals marked

"Customer's Connections" with a red tag on the disconnect switch. A

yellow tag attached to the control panel gives the proper voltage, cycle, and
phase. Check for correct wheel motor rotation and if not correct, reverse
two of the incoming line connections.

HEADSTOCK AND FOOTSTOCK

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The headstock and footstock should be carefully cleaned. The
spindles of both should be thoroughly wiped out and the centers carefully
inspected. Be sure there are no nicks or burrs on the centers and that they

properly fit their respective holes. Centers must seat well in their spindles
if good results are to be secured.

Never move the headstock or the footstock unless the swivel table

is clean.

WHEEL SHEAVES

Two wheel spindle belt sheaves are supplied, each stamped with the
corresponding wheel size with which it must be used. With the safety arm rod
properly attached to the hinged hood of the wheel guard, a safety lever will
prevent the mounting of any but the proper size belt sheave.

In mounting the wheel spindle belts, see that they are just tight

enough to prevent squealing.

MOUNTING THE GRINDING WHEEL

First, the wheel should be tapped lightly with a small wooden
mallet or a block to be sure it is of sound structure.
is emitted the wheel should not be mounted.

sound, one of the blotters supplied by the wheel maker should be placed

Being satisfied that the wheel is

Unless a clear ring

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on the sleeve. Then mount the wheel. Do not force it on the sleeve; it should
slide on easily. Now place another blotter on the wheel sleeve flange and slide
this on to the sleeve. Line up the cross-mark on the flange with a similar mark
on the sleeve and insert the screws.
the wheel is gripped between the blotters. Do not at first draw one screw up
as tight as possible and then the next, also tight. Take up on the first until it
is snug. Then go to the diametrically opposite screw and draw it up snug.
Then draw up the screw 90° from the others and continue this procedure
taking up a little at a time until all screws are tight. This is important
because unless the flange is drawn down evenly against the wheel, the
latter may be cracked. Tighten screws to 15 foot-pounds with all threads
free running,clean, and rust free.

WHEEL BALANCING

The grinding wheel should then be mounted in the machine and the
wheel trued.
and the grinding wheel should then be mounted on an arbor and placed in a
balancing stand for determination of balance of the unit. Remove the balancing

weights to be found at the center of the wheel sleeve. Allow the unit to

come to rest and chalk mark the wheel on the heavy side (at the bottom).
Reinsert the weights diametrically above center until the wheel unit will come
to rest in any angular position. When the wheel is in static balance, tighten

the weights, remount the wheel unit in the machine, and

The entire assembled wheel unit consisting of the wheel sleeve

Draw the screws up snugly making sure

retrue

the wheel.

FILLING THE OIL RESERVOIRS

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the hydraulic fluid, and the ways lubricant reservoirs.

lubricant reservoir is within the wheel spindle housing. Fill this

reservoir with approximately 4-1/4 quarts of 50-60 S.U. V. high grade
spindle oil through the hole for the bayonet gage.

base, beneath the wheel slide. Its capacity is approximately 32 gallons.

with a high grade hydraulic fluid of 150 S.U.V. to the level indicated on the sight
gage in the base wall. For the outside hydraulic fluid reservoir which is
furnished as an optional extra, the same hydraulic fluid should be used. Further
instructions will be found on a plate attached to the top of this reservoir.

front and rear base beneath the wheel spindle belt guard. Fill to the level
indicated on the sight gage with thelubricant specified on the instruction
plate mounted immediately above,or on, this reservoir. Approximately

3-1/2 gallons are required.

There are three oil reservoirs to fill; the wheel spindle lubricant,

The wheel spindle

The standard hydraulic fluid reservoir is located inside of the machine

The ways lubricant reservoir is accessibly mounted at the junction of the

Fill

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OILING

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Locate all oil holes and cups on the machine and fill with a medium

grade of good machine oil.

GRINDING COOLANT

Whether soluble oil or a paste-type coolant compound is to be
used (mixed with water) see that the coolant mixture is rich enough to prevent
rusting the machine. Coolant tank capacity is approximately 55 gallons.

With respect to the compound to be used as a grinding lubricant,

NORTON COMPANY makes no specific recommendation as to manufacture.
However, a compound free from soda is advised. In the event that the
compound selected proves to have an undesirable foaming effect, the addition
of a little kerosene to the coolant will correct this difficulty.

OPERATION EXPERIMENTING

See that all oil and grease cups are filled, and that oil in

reservoirs is at proper levels. Check coolant reservoir.

Before starting the machine, move the wheel slide to its extreme
rear position. Then place the headstock and the footstock at the extreme ends
of the table and centralize them with the grinding wheel. Set the table

reverse dogs so that the table will travel about 6" and the table movement
does not bring either the headstock or the footstock too near the grinding

wheel. Before starting the pump motors be sure that the table start-stop
lever is in the stop position. Naturally it should be seen that it is in the
stop position until everything is known to be in readiness to run the table.

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Time should be spent in determining the functions of the various

controls and care taken to avoid damage. Read the description of your

particular machine arrangement in Section IV or V.

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VISCOSITY RATING

SECTION II.

LUBRICATION

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Lubricating and hydraulic oils, greases and grinding lubricants, applied
in the operation of NORTON * grinding machines, should be of a correct type
and good quality. The following information should be valuable to the user of
NORTON machines to get maximum production with minimum down time.

To evaluate the physical properties of an oil, the term ,,
used. This indicates the measured resistance of the oil to flow at a given
temperature and rate. The Saybolt Universal Viscosimeter represents the
U. S. standard means of determining the time in seconds for 60 c.c. of oil
to flow through a standard orifice at a specific temperature. The viscosities
indicated will be identified at 100°F. for simplicity of control.

Identification of the viscosity represented by the S. U. V. at 100°F. is
the abbreviation for Saybolt Universal Viscosimeter.

U. S. standard .
South American standard
British standard .
Continental

HYDRAULIC AND CIRCULATING SYSTEMS

Oils for hydraulic and circulating systems must be well refined
to maintain stability of the oil or freedom from oxidation within the limits

of temperature and pressure under which an oil of this type must function.

The residues formed during the oxidation of a petroleum oil are in the form

of gum and varnish which readily disturbs the sensitive valves of a hydraulic
control mechanism. This also might be the cause of plugged pipe lines in the
central lubricating system. The "pour point" of an oil indicating the point
at which an oil is no longer a fluid, will present a problem only when the
equipment is exposed for long periods of time to low temperatures, or when the

new oil in drums is stored in the open with no physical protection. To assure

correct function of the hydraulic system, a high grade oil, well refined and

free from impurities, must be used.

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Saybolt
Saybolt
Redwood

Engler

viscosity

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WHEEL SPINDLE

The lubrication of any grinding wheel spindle is critical to the successful
operation of the entire machine. NORTON Grinders are no exception to this
rule. For spindle oil, we recommend the use of the highest grade oil with vicosity
of 50-60 S. U. V. at 100° F. for use in all NORTON machines with plain bearings.

*Reg. U. S. Pat. Off.

11

LOOSEN

RIBBON QUARO TO INSPECT
LUBRICANT DRAIN-MOLES

(ONE AT

PINCH-BLOCKS AND I

EACH END OF FLAT AND

LIFT STEEL

WAYS

VEE WAY )

STREAMS

MUST SHOW IN SIQHT QLASSE5

Times

or

spindle

when spindle

I

LUBRICANT

is

IN

AT

all

OPERATION

CO

OIL CUPS AND HOLES

USE 300 S U

V.

LUBRICATING^ OIL

COOLANT TANK-
C r °AClTY APPROX

55 QALLONS

WHEE>

- S

S

pindle lubricant

FILL WITH 50-60 S U.V. AT IOoV,
SPINDLE OIL TO LEVEL

ON

BAYONET QA(qE (APPROX

R

AFTER 500 HOURS OF SERVICE:

FILL HYDRAULIC RESERVOIR WITH

150 S.u.v. AT 1

LEVEL INDICATED BY Sl^HT CqLASS
IN BASE WALL ( APPROX. 32 (qALS)
FOR OUTSIDE RESERVOIR, FOLLOW

INSTRUCTIONS ON PLATE

AFTER 500 HOURS OF SERVICE - OR.

WHEN EVIDENCE OF CONTAMINATION

EXISTS THOROUGHLY CLEAN
RESERVOIR. ON CHANGE.

FILL WAYS LUBRICANT RESERVOIR-
IN ACCORDANCE

ON PLATE (APPROX.. 3^ (qALS.)

AFTER 500 HOURS OF SERVICE!

PIN OLE LUBRICANT

fill

ecommended

HYDRAULIC OIL

RECOMMENDED

WAYS LUBRICANT

RECOMMENDED CHANGE

CHANQ

00°

HYDR.AU LI G

WITH INSTRUCTIONS

,

point

.

INDICATE O

QTS.)

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OIL TO

change

SE-779-B

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H. RAND
V- FONTAINE.

3/I/5-I

Sr

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Spindle oil should be free from any form of contamination, be
stable, and operate with freedom from oxidation. No additives should be
present. The oil should be of good quality and carry the guarantee of a
reputable refiner.

GREASE SELECTION

The selection of the correct grease will be governed by the speed,
temperature, and exposure under which the machine must operate.
Ball bearings at low temperatures require a soft cup grease. High
temperatures require a high grade soda soap grease which possesses

melting point. When moisture is present, use a water insoluble grease.

All greases must be stable, in a pure form free from fillers and of good

quality. The grease should be kept free from dirt and all forms of

contamination.
bearing be filled from one third to one half capacity and be approximately
maintained at that level. Greases must not bleed in operation. When the

oil bleeds from the soap in a grease, there is the danger that the dried

soap left by the separation will be the cause of mechanical failure. Stability,
therefore, is of extreme importance in grease selection.

In general, bearing manufacturers recommend that a ball

a

high

OIL DILUTION

The NORTON Type CTU Machine is built with various hydraulic

operating valves which require clean hydraulic oil of good quality in order
that they all may operate satisfactorily.

As nearly as possible, care has been taken to prevent coolant

splash, spray, or mist from entering the hydraulic reservoir which would

tend to form a harmful emulsion or sludge.

If, however, the oil takes on a yellow appearance, the indications
are that some coolant has entered the hydraulic system and sooner or later
will cause faulty action of the delicate hydraulic valves.

In any event, we recommend that the hydraulic and spindle oil
reservoirs be drained and refilled after 500 hours of use.

13

SLIDING

table ways

C*PM

3£^AL RE5ERVOIR

300 5 U-V. WITH ADDITIVES

HYD PRESSURE PUMP-

5EPARATE RESERVOIR

ELEC
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WHEEL SLIDE
WAYS

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'WHEEL

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SPINDLE

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SPINDLE BEARINGS

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pump

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brown
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(3)

SKINNE

(4)

brown a.Sha

(5)

P

ARKER CONE CHECK VALVE

NORTON VALVE

(7)

N

orton valve

NORTON SPINDLE
WORM OILER

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SPINDLE RESERVOIR

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IN HYD

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LUBRICATION CIRCUIT OIAQRAM- 6 "CTU CYL. OR. MACHINE

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5E-77PC

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SECTION III.

TABLE AND TAPER ADJUSTMENT

UNIT CONSTRUCTIONS

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These machines have a sliding table which travels on the flat and vee
ways of the base, and a swivel table pivoted in the center on top of the sliding
table.

The swivel adjustment is at the right end of the table and provides a means
for making taper settings. The graduation gib is intended as a guide only and
any finer adjustment may be obtained by the trial and error method using the
adjusting screw at the front.

HEADSTOCKS

Two types of headstocks are available for these machines, one a dead

and the other a live center type. In the dead center type, the center remains
stationary and the work drive plate revolves about it. In the live center type,
the spindle, center, and work drive plate revolve as a unit.

The stopping and starting of the headstock motor is accomplished

automatically. However, if desired, this motor may be operated by
push buttons located on a panel at the left front of the machine. A selector
switch marked "Hand-Auto" is provided for this purpose.

Both the dead center and the live center types of headstock are driven
directly through vee belts. The headstock drawings in Section VII show how
the belts are adjusted by means of eccentric shafts.

The ball bearings of both dead and live center headstocks are preloaded
and prelubricated so that no attention is required. Headstock center taper

is No. 10 Jarno.

F00TST0CK

The standard footstock is the lever type with spring compression

control. The initial movement of the hand lever retracts the center.

The footstock spindle is clamped by means of a large hand knob on the
front of the footstock body.

Footstock center taper is No. 10 Jarno.

15

WHEEL FEED

Wheel feed is accomplished by afeed screw that meshes with a

cast iron half-nut attached to the under side of the wheel slide. The screw
is mounted in ball bearings and revolves in a bath of oil. A drawing of the
complete wheel feeding arrangement including the power wheel head traverse
mechanism as furnished on semiautomatic machines, follows.

A counterclockwise rotation of the wheel feed handwheel moves the

grinding wheel in towards the work. A positive stop and an indexing arrangement
of the handwheel provide accurate work size setting.
knob inwards and rotating it clockwise, wheel feed settings in increments to
provide . 0001" of work diameter reduction up to a total of . 008", may be

By pushing the indexing

selected.

The following table of measurements represents a correlation of

work diameter reductions in both the English and metric systems:

Settings

Each notch in index knob
One turn of index knob
One turn of handwheel

English

.0001"
. 008

”

. 200"

Metric

. 0025 MM.
. 20 MM.

5. 0 MM.

POWER WHEEL HEAD TRAVERSE (Optional with Plain Machines)

This arrangement

is

provided on the Semiautomatic Machine for rapid,

power positioning of the grinding wheel. It operates as follows:

The wheel slide rapid traverse piston rod (P) (See Wheel Feed Unit

drawing in this section) attached to the end of the cross feed screw (T) moves

the screw and wheel slide forward as a unit until the rapid traverse piston

(Q) closes the main exhaust port (R). Oil now is metered out of cushioning

port (S) which slows down the speed of the wheel slide.

At the termination

of the cushion stroke, the end of the piston gently contacts the front wall of the

cylinder for positive stop.

For adjustment of wheel slide rapid traverse movement,

loosen check
nut (V). Then turn screw (W) in or out to decrease or increase the distance of
the rapid traverse movement.

valves at the rear govern the rate of the forward and backward cushioning

Then retighten check nut (V). Two needle

strokes.

AUTOMATIC GRINDING FEED (Optional with Plain Machines)

Upon termination of the rapid traverse and cushioning

stroke of the

wheel slide in forward movement, the automatic grinding feed begins.

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Complete Wheel Feed Unit

This is accomplished by hydraulically rotating the feed screw. The grinding
feed continues at the rate set by #17 on Page 4 until the stop on the wheel feed
handwheel contacts positive stop #14.

Hydraulic rotation of the feed screw is by means of a wheel feed control
cylinder the details of which are shown in the drawing of this unit that appears
in the Parts Section. Hydraulic pressure moves the double end piston in this
cylinder, and the rack teeth on the piston rod rotate the rack pinion which

causes rotation of the wheel feed gears and the feed screw. Automatic feed is,

therefore, under conditions of metal-to-metal contact.

AUTOMATIC FEED AT TABLE REVERSALS

With the manual control lever #9 as shown on Page 4 turned to the left,

automatic wheel feed at each table reversal is obtained in traverse grinding.
The amount of automatic feed obtainable at each table reversal is from zero
to . 003". The amount of feed desired within this range is set by control #16
as shown on Page 4.

The total amount of this automatic feed that is obtainable is . 150" in
terms of diameter reduction. This represents . 075" of wheel slide movement.
When this feed is used, there is automatic reset of the wheel head after

grinding to size.

When it is desired to traverse grind without having automatic feed at

table reversals, throw control lever #9 to the right. This equalizes the oil
pressure on both ends of the wheel feed control cylinder. When this is done,
the wheel feed handwheel may be rotated at will without disengaging the
handwheel clutch. To side grind a shoulder or step diameter, follow the
instructions in Section IV.

WHEEL SPINDLE RECIPROCATING ATTACHMENT

When a spindle reciprocating attachment is supplied, reciprocation of the

grinding wheel from 0" to 3/8" may be obtained. Normally, the setting made at

the factory gives approximately 1/16" of reciprocation. To increase or

decrease this amount, remove the circular cover behind the reciprocation

control lever on top of the wheel spindle housing.

Insert a pin wrench in the
holes of the graduated flange beneath this cover, and set to the amount desired.
Each graduation on the flange represents 1/16" reciprocation of the spindle.

18

R
R

R
R

R
R

R
R

WORK START-STOP UNIT

Work rotation is automatically started and stopped on both Plain

and Semiautomatic Machines. This unit is located inside the left front apron.

A limit switch is operated by vhydraulic and spring action so as to start and

stop the work drive motor. A selector switch, mounted on the left front panel,
may be turned to HAND if manual control is desired.

HYDRAULIC AND LUBRICATING PUMP UNITS

These units are on the right side of the machine immediately
beneath the wheel spindle belt guard.
the hydraulic and ways lubrication systems are in this area. Normally,
these valves are set at the factory for the pressure at which each system

should operate. However, metal tags specifying the correct pressures are
attached to each valve. Maintain ways lubricant pressures at 4 to 6 pounds.

Excessive pressure may cause improper positioning of sliding components.

On the discharge side of both the lubrication and the hydraulic pumps

are filters. These should be checked periodically, and given such attention
as may be necessary. See that the hydraulic filter element does not become
clogged, because this condition may result in a faulty machine action.

The pressure relief valves for both

R
R

R
R
R

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R
R

R

HYDRAULIC OIL STRAINERS

Machines arranged with the hydraulic fluid reservoir inside the base
have a strainer for the hydraulic fluid located in the suction line of the
hydraulic pump beneath the wheel slide. On machines with the hydraulic fluid
reservoir outside, this strainer is in the tank. These should be checked
periodically to prevent clogging.

WHEEL SPINDLE BEARINGS ADJUSTMENT

While these bearings are adjustable, we caution against any
promiscuous tampering with them. Many machines are on record whose bearings
have not been adjusted over long periods, and it is advised that such adjustments
be made only when the need has been definitely proved.
slight adjustment should be made and repeated if necessary. This is to avoid
the possibility of tightening too much and causing overheating or seizure.

In making an adjustment, set up but one bearing at a time, allowing
the machine to run under working conditions for a day or so before adjusting the
second bearing, if this necessary. The cooler bearing is naturally the one to
adjust first. Do not attempt to adjust bearings when they are cold. In
preparing to adjust a bearing, be sure to loosen the wedge bolts of the bearing
concerned. Do this upon removal of the spindle housing cover so that this
step will not be overlooked.

In this case, a very

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19

PLAN

VIEW

WHEEL

SPINDLE

HOUSING

SPINDLE

OIL FILTER

SPINDLE

CONTROL

OIL FLOW

VALVES

SPINDLE BEARING

OUTER

SPANNER

NUT

to

O

WEDGE

BOLTS,

N 6713

i

SPINDLE

INNER

BEARING

SPANNER NUT

V

SPINDLE END

THRUST

ADJUSTMENT

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NOTE

Reduction in the diameter of the bearing bore is obtained by drawing the
bearing into its case by tightening the inner spanner nut. The taper on the
O.D. of the bearing is such that when the bearing is drawn into its case

. 012", a reduction of . 001" is obtained in the bearing bore.

Therefore, to obtain . 001" reduction of the spindle bearing bore, set

up a clearance of . 012" between the outer spanner nut and the spindle bearing
case by use of a feeler gage. Now tighten the inner spanner nut until the
outer nut is seated against the bearing case. This should give . 001" reduction
of the bearing bore. Use this twelve to one ratio to obtain any reduction
desired.

When the bearing has been drawn into its case, loosen both the inner and
outer spanner nut. This move is important. The bearing will remain at the
point to which it has been drawn. Now tighten the wedge bolts which will
straighten the bearing in its case if there has been any tendency toward twist.

After the wedge bolts have been brought up snugly (do not tighten excessively),

bring up the inner and outer spanner nut snugly but not too tightly and replace
the housing cover.

*

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WEDGE BOLTS AND SPANNER NUTS

The wedge bolt tightening operation is extremely important. They should be
brought up snugly but not excessively tight. The wedge bolts straighten up the
bearing in its case, and to do this effectively, the outer and inner spanner nuts

must be loose. After this is done, tighten up the outer and inner nuts firmly,

but not too tightly.

which may lead to trouble. Do not pound on the wrench with a hammer and

under no circumstances should a set or punch be used in adjusting these spanner

nuts, since these tools will cause a peening action which in time might cause
oil leakage from the bearing.

BEARING TEMPERATURE

Bearings should never be adjusted when they are cold. Should the machine
be in need of bearing adjustment, allow it to run for some time until the bearings
warm up. A bearing, if adjusted when cold will often seize the spindle when the

latter is allowed to run. This seizing is caused by the differences in expansion
occurring in the spindle parts and the fact that a cold adjustment does not

usually provide clearance enough for the expansion of the spindle.

Hammering on the nuts will set up strains in the bearings

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SPINDLE END THRUST ADJUSTMENT

1

When required, this adjustment is made by two spanner nuts at the

end of the spindle worm. One nut locks the other in place. Be sure to make
this adjustment in small increments. Too tight an adjustment may bind the
spindle. Do not peen these nuts over as a locking precaution, since this

will prevent proper seating of the nuts against the worm.

22

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R

R
R

R
B
P
P

SECTION IV.

CYCLE CONTROLS CONSIST OF

1. Work rotation -- stop and start.

2. Coolant flow -- stop and start.

3. Interlock of table handwheel -- connect and disconnect.

4. Wheel feed -- advance and retract.

PLAIN MACHINE

This type of machine has the following features for traverse grinding of

work:

Hydraulic

I

Single speed hand drive apron with automatic

Individual hydraulically controlled

II

table reversal.

NORTON 6” TYPE CTU PLAIN MACHINE OPERATING ARRANGEMENT

table traverse, selective for grinding and truing speeds.

handwheel interlock.

adjustable

dwell at each end of

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Hydraulically controlled adjustable wheel picker feed at each end of

Ill

table reversal.

IV

Automatic or manual control of work revolution
manual jogging control.

Automatic

V

Hydraulic

VI

shoulder and step diameter grinding on work without disturbing
feed set-up.

FUNCTIONS

Place work in the machine and engage footstock center in work.

1.
Throw table stop-start

a.

Table starts traversing and dwells at each table reversal if

desired. (Right- and left-hand table dwell controls
identified on front of machine. )

b.

Work revolves with selector switch (S) set to AUTO.

c.

Grinding coolant starts to flow.

d.

Table handwheel (T) is disconnected from rack pinion.

e.

Grinding wheel advances at an initial rapid feed to take up
existing backlash.

f.

Grinding wheel is fed into the work at each table reversal

(adjustable by control (L) from 0 to . 003M) until work is down
to size.

(Revolving feed screw type.)

stop and start, with

control of grinding coolant.

means to convert picker feed to manual control for grinding

lever (H) full motion to the left.

clearly

wheel

23

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Q

Q

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SE-849-C

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IDENTIFICATION OF OPERATING CONTROLS

Type CTU Plain Machine

A.

Wheel Feed Handwheel. Graduations equal .001" in work diameter reduction
B. Index Knob. Each click on rotation represents setting for .0001" work diameter reduction
C. Handwheel Clutch

D. Wheel Feed Positive Stop Arm

F. Pointer for determining amount of wheel feed
G. Reverse Lever
H. Table Stop-Start Lever. This lever also produces truing speed as set by controls to the left

J. Manui.’
L. Control for amount of feed at table reversals

S. Selector switch for manual or automatic work rotation control

T. Table Handwheel

Centr'd Lever

24

2. Throw table stop-start lever (H) full motion to the right.

a. Table stops traversing.

b. Work and coolant stops.

c. Table handwheel (T) is connected to rack pinion.
d. Grinding wheel retracts the total amount of picker feed plus

the initial rapid feed.

3. Move footstock lever releasing work and remove work from machine.

P

*

P
P

P

f

When it is desired to obtain more clearance between work and wheel

for loading, proceed as follows:

1. Declutch wheel feed from feed cylinder by lever (C) when wheel is
retracted.

2. Crank wheel feed handwheel (A) clock-wise to desired clearance,
between work and wheel.

3. After starting table, turn wheel feed handwheel (A) counterclockwise
until wheel contacts largest diameter on work.

4. Engage wheel feed clutch (C) to wheel feed cylinder and proceed as
originally explained.

To side grind shoulder or step diameter on work proceed as follows:

When work is to size and before stopping table traverse, throw

1.
manual control lever (J) to the right.
a. Converts cycle controls from table stop lever (H) to manual

control lever (J).

Turn wheel feed handwheel (A) clockwise for clearance between

2.

wheel and work.
Throw table stop-start lever (H) full motion to the right.

3.

a. Table stops traversing.
b. Table handwheel (T) connects to rack pinion.
Side grind shoulder or step grind as desired.

4.
Throw manual control lever (J) to the left.

5.

a. Converts cycle controls back to the table stop-start lever (H).
b. Work and coolant stops.

c. Grinding wheel retracts the total amount of picker feed plus

the initial rapid feed.

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25

TO SET WHEEL FEED INDEX

Proceed as follows:

-

a

H

1. Declutch (C) handwheel (A) and back off wheel. Close Valve (L).
Put workpiece in machine.

2. Start table traverse, coolant flow and work rotation by throwing table
start-stop lever (H) to the left.

3. Feed wheel by handwheel (A) until faint spark from workpiece occurs,

then engage handwheel clutch (C).

4. Pull out knob (B) and move hand-wheel to left until positive stop
contacts positive stop arm (D).

5. Rotate index knob (B) clockwise the amount of grinding feed desired
by using pointer and graduations on handwheel.

handwheel equals .001" work diameter reduction. Each click of
index knob equals .0001" work diameter reduction.

6. Throw table start-stop lever (H) full right to stop table, coolant flow,
and work rotation, then open valve (L) so as to give the proper amount

of feed at each table reversal.

7. Grind a sample workpiece.
movement of index knob (B).

If

necessary, correct for final size by

Each graduation on

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SECTION V.

NORTON 6

” TYPE CTU SEMIAUTOMATIC MACHINE

I
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OPERATING ARRANGEMENTS

SEMIAUTOMATIC MACHINE

This type of machine has the following features for plunge cut work or

conversion to traverse work.

described under Plain Machines and in addition have the following:

Hydraulic means to convert picker feed or continuous feed to manual

I

control for shoulder and step diameter grinding on work without

disturbing

Hydraulic rapid wheel head traverse with adjustable stroke.

II

Continuous

Ill

Means to convert semiautomatic arrangement

IV

machine.

V Electrically controlled

if desired.

Functions

wheel feed set-up.

straight infeed for plunge cut work.

(with selector valve (P) set to PLUNGE).

Semiautomatic machines have all the features as

of

machine to a plain

timing device to automatically terminate cycle,

*

f

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f

v

Place work in the machine and engage footstock center in work.

1.
Operate wheel head traverse lever (N) toward operator.

Energizes

a.

Wheel advances rapidly.

b.

Work revolves

c.

d.

Grinding coolant starts to flow.

Grinding wheel advances at an initial rapid feed, to take up

e.

existing backlash.
Proceeds to grind at the predetermined rate of feed, until it is

f.

stopped by (D) and sparks die out.

Electrical timer indicates termination of grinding cycle, and

g-

de-energizes wheel slide valve solenoid.

Wheel slide retracts rapidly.

h.

Wheel feed retracts rapidly.

i.

Work stops revolving.

J.

k.

Coolant stops flowing.

2. Move footstock lever releasing work and remove work from machine.

wheel slide valve solenoid.

with selector switch (S) set to AUTO.

9

27

r

J

G

H

N

M

P

SE-848-C

IDENTIFICATION OF OPERATING CONTROLS

Type CTU Semiautomatic Machine

A. Wheel Feed Handwheel. Graduations equal .001" in work diameter reduction
B. Index Knob. Each click on rotation represents setting for .0001" work diameter reduction

C. Handwheel Clutch

D. Wheel Feed Positive Stop Arm

F. Pointer for determining amount of wheel feed

G. Reverse Lever

H. Table Stop-Start Lever. This lever also produces truing speed as set by controls to the left

J. Manual Control Lever

L. Control for amount of feed at table reversals

M. Feed rate control for plunge grinding

N. Cycle Control Lever. Pull to bring wheel forward, push to retract wheel or stop cycle

P. Selector for Plain or Semiautomatic operation

S. Selector switch for manual or automatic work rotation control

T. Table Handwheel

*

'

28

I
I

I

Conversion to plain machine arrangement:
Move selector valve lever (P) to the ’’traverse'

’ position.

r

t

J

*

F

t

a. Transfers cycle controls from wheel slide lever (N) to table

stop-start lever (H).

Lever control for termination of cycle.

1. Turn selector switch (S) to HAND, thus eliminating the electric timer.
Then substituting (g) in above functions by operating wheel head traverse

lever (N) toward machine to de-energize wheel slide valve solenoid.

To side grind shoulder or step diameter on work proceed as follows:

1. When work is to size, throw manual control lever (J) to the right,
a. Converts cycle controls from wheel head traverse lever (N) to

manual control lever (J).

2. Turn wheel feed handwheel (A) clockwise for clearance between wheel
and work.

3. Side grind shoulder or step diameter manually.

4. Throw manual control lever (J) to the left.

a. Converts cycle controls back to the wheel slide traverse lever (N).

TO SET WHEEL FEED INDEX

1. Start machine, load workpiece,
wheel in back position.

2. Declutch handwheel (A) with control (C) and revolve handwheel
clockwise several turns. Close wheel feed valve.

3. Pull control lever (N) to bring wheel forward. On this movement the
grinding wheel should stop short of the workpiece. If it appears that

the wheel will contact the workpiece,
pushing control lever (N). Then revolve handwheel

more turns. This will provide additional clearance on forward power
movement of the wheel.

4. When wheel stops short of the work-piece on forward movement, feed
wheel into light contact with work-piece by counterclockwise movement
of handwheel (A). Then reclutch handwheel by control (C).

5. Pull out index knob (B) and move handwheel to left until positive stop
contacts positive stop arm (D). Now rotate index knob (B) clockwise

the amount of grinding feed desired.

NOTE: Each click of index indicates setting for . 0001" work diameter
reduction; each graduation on wheel feed handwheel equals . 001
diameter reduction.

push control lever (N) to put grinding

immediately retract wheel by

clockwise several

” work

29

1

6. Retract grinding wheel by pushing control lever (N). Open valve
(M) slightly. This valve governs the rate of the grinding feed.

Now bring wheel forward by pulling control lever (N) and when
wheel begins to grind work-piece adjust valve (M) to obtain the
feed rate desired.

7. When wheel feed stops through contact of positive stop on
handwheel with positive stop arm (D) retract wheel by pushing
control lever (N). Inspect workpiece for size. Correct setting

as necessary by index knob (B).

8. Set Timer by timing the next piece ground.

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30

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V

SECTION VI.

FINISH FACTORS

The quality of finish of the ground surface is due to the manner in which the
machine operates and to the condition of the wheel face. The first is a matter
of mechanical perfection and it is felt that the NORTON machines are second

to none in smoothness of operation and control, and in freedom from
vibration. The second, the condition of the wheel face, is a matter of technique,

a grinding skill which is only acquired by experience.

WHEEL TRUING

In preparing the wheel face, the principle laid down is that the rougher the
face of the wheel, the rougher will be the finish on the work. Conversely, if
fine finishes are to be obtained, the wheel face must more nearly approach a
smooth surface. Since the dressing of a grinding wheel with a diamond
or other device consists of breaking out of the grinding surface of the wheel
abrasive particles to present a new series of cutting faces, truing for rough
finishing will mean taking out larger particles of the abrasive than in truing
for fine finish. Hence, in rough truing, the wheel feed is comparatively
heavy and the traverse fast, while fine finish truing demands the lightest of
wheel feeds and the slowest of table traverses.

GRINDING PRINCIPLES AND GENERAL PROCEDURE

' A

r

Truing equipment varies with the work at hand. Several devices are available
to supplant the familiar diamond such as the "Place, " "Ross, " or "Precision"
wheel dressers. Various methods are used to hold the truing devices to the
machine, quick detachable standards being available for direct attachment of
these devices to the table. In the majority of cases, however, it is found
that the diamond toolholder attached directly to the table is entirely

satisfactory. The toolholder may be permanently clamped to the table, by
sliding the truing bar to clear the work, during grinding.

The routine practice in wheel truing, following the balancing of the wheel,

consists of feeding the wheel into the diamond about 0. 001" and traversing
the diamond across the wheel face at a medium rate. The wheel should be
fed in about 0. 001" at each pass until a perfectly round wheel is assured.
This should (the wheel grain being correct) produce a wheel surface
satisfactory for rough grinding.

Truing for finer finishes from this point consists of reducing the table
traverse to the slowest speed comparable to the finish desired and reducing
at the same time the amount of the feed of the wheel toward the diamond.
In fact, for the finest of finishes, it is advisable to make several passes of the
wheel across the diamond without any inward feed of the wheel.

f

31

1

In summation, it may be repeated that good truing technique is only

obtained through experience. Rough truing consists of opening up the grinding-
surface of the wheel to expose sharp abrasive surfaces necessary for the
rapid removal of stock. Finish truing, requiring a smoother abrasive face,
requires the lightest possible feeds of the wheel to the diamond and the

slowest possible table traverse compatible to production.

Care should be taken in any truing operation, especially if the

comparatively valuable diamond is being used. Avoid continual truing. A
wheel which requires constant truing is unsuitable for the work and should
be replaced. Avoid excessive wear of the diamond on wheels which are too
hard. Avoid giving a heavy truing feed to the wheel and then pouring on the
coolant since, with the diamond heated up, the coolant may crack the stone

or loosen it in its nib. Always bring the diamond onto the wheel in the

approximate center of the grinding surface since this avoids the possibility of
the wheel first striking the side of the nib due to an error in judgment of
distance.

USE OF THE STEADYREST

The use of the steadyrest requires restraint. In ordinary use, the under
bearing is brought up snugly against the work while the front bearing rests
lightly, but without play, against the work. Too much pressure on the latter
bearing will make the work grind small.

■

■

The number of rests to be used depends on the work to be ground.

Naturally a long slender piece of work will have a greater tendency to spring

than a short stubby bar. No set rule may be laid down for the number of
rests to be used, as the depth of the grind also must be taken into
consideration.

WORK LOCATION

The first thing to do in locating the work is to set the headstock and
footstock for the length of the piece to be ground. These can be set
anywhere on the table, but it is better practice to have the center of the

workpiece come approximately over the center of the table in order to
equalize the taper adjustment.
take a light cut across the work.

ADJUSTMENT FOR TAPER

Check the workpiece to determine exactly how much stock is to
be removed and also to find out what taper adjustment is necessary. After
making this adjustment take another light cut. Experience will teach how

much adjustment to make to overcome a known taper.

Next true the grinding wheel, and then

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32

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WHEEL SELECTION

The selection of a grinding wheel is influenced by many factors and
naturally a manual of this nature can give only suggestions on a proper
choice.

However, the operator or shop foreman is urged to exercise
intelligent discrimination in making his selection. Not only will production
and the quality of work be affected by the use of proper wheels, but wheel
expense itself, an important item, is seriously influenced by such selection.

There
combinations of grade, grain, and bond are available, and a good general
rule in wheel selection is found in "The harder the steel, the softer the

is a

NORTON wheel for every grinding need. Hundreds of

wheel. " (There are, naturally, exceptions to this rule. )

ALUNDUM* ABRASIVE

ALUNDUM* is the trade name for NORTON COMPANY'S aluminum
oxide abrasive wheels. They are most suitable where the work to be
ground is of steel or a steel alloy. In fact, these wheels are adaptable
to the majority of cylindrical production work.

32 ALUNDUM* AND 38 ALUNDUM* ABRASIVES

For extra sensitive steels, it is suggested that a wheel made of 32
ALUNDUM* Abrasive or 38 ALUNDUM* Abrasive be used since such a
wheel has less tendency to burn the work.

57 ALUNDUM* ABRASIVE

57 ALUNDUM * Abrasive is another member of the NORTON family of
ALUNDUM* Abrasives.

Its grinding characteristics are intermediate between the
tough regular ALUNDUM* Abrasive and the friable 32 or 38 ALUNDUM* Abrasives.
Hence, it is an ideal abrasive for general purpose grinding on denser and harder
alloy steels where stock removal is normal and corner wear is not a factor.

CRYSTOLON* ABRASIVE

CRYSTOLON* wheels, of a hard, sharp abrasive, are best suited for

grinding cast iron, non-ferrous metals, non-metallics and certain exceptionally
hard materials. This category includes rubber, soft brasses and bronzes,
aluminum, copper, glass, and the cemented carbides.

FACTORS AFFECTING SELECTION

Knowledge of the material to be ground alone, however, is not sufficient
basis for proper wheel selection, especially in high production work. Other
factors such as the area of contact between the wheel and the work, the type

and condition of the grinding machine itself, wheel speed and work speed, are

all important .

‘

Trade Marks Reg. U.S. Pat. Off..

33

n

n

Obviously, with such a variety of factors to be considered, expert
guidance may be required in making the proper wheel selection,
end it is suggested that a NORTON COMPANY wheel representative be

consulted wherever possible.

INDEX SETTING — WHEEL WEAR

When the machine is grinding straight within the established limits of
the piece, again determine
accordingly. When the piece has been reduced to the size for which the
index was set, again check the piece itself with a micrometer or gage and, if

necessary, make a correction in the index setting and reduce the piece to size.

If there is much stock to be removed, or if the grinding wheel is too soft for
the job, you will probably find that, due to wheel wear, the piece will be
somewhat oversize. Wheel wear, of course,
selection of the correct wheel and removing only the few thousandths
ordinarily

necessitate a change in index setting in grinding only one piece.

WHEEL BALANCE

be produced. Because a grinding wheel was correctly balanced when it
was full size does not necessarily mean it will be in balance after being
reduced in size.

taken off in finish grinding there should not be enough wear to

Unless the grinding wheel is correctly balanced, good work cannot

the amount of stock to be removed and set the index

cannot be avoided but by the

and to this

*

■

CENTER EXAMINATION

Examine the center points frequently to see that they are not scored.
Also, be sure the center holes in the workpiece are of sufficient size and that
they are clean. If the center holes have become damaged,
produced.

sure to wipe out the spindle before reseating the points.

dirt. A tiny grain of dirt on a center will prevent its seating properly
cause unsatisfactory work to be ground.

the center holes is the most common cause of poor grinding.

GRINDING COMPOUNDS

machine's
five pounds.

If the headstock or footstock centers are removed,

Also inspect the center shank to be sure it is free of nicks or specks of

A

poor condition of the centers or

A satisfactory grinding solution may easily be made by filling the

tank with water and adding a can of grinding compound,

A

thinner proportion

may be used at the discretion

34

good work cannot be

always be

approximately

of

the operator.

and

■

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1

*

Other kinds of compound may be used in this machine.

Soda compounds,

especially in hydraulically operated machines, are not recommended since they
have a tendency to create a film which causes sticky valves. This leads
to faulty machine operation. In general the coolant mixture should be just

rich enough to prevent rusting the machine.

CLEANING

The machine should be cleaned regularly. Despite a built-in settling

tank, grit and metal particles have a tendency to '’float

11 in the coolant,

which may mean recirculation to the possible detriment of the ground finish.
A filter may be used to good advantage.

SPINDLE SPEED

NORTON grinding machines are built to provide a surface speed of
5500 to 6800 feet per minute to the grinding wheel. As the wheel wears, this
surface speed, of course, is reduced and the wheel action becomes noticeably
different. The wheel will act softer and more frequent truings will be required
in order to obtain the desired finish.

WHEEL SPEED CHANGES

The wheel spindle is driven by vee belts directly from a motor which is
adjustable and mounted on the rear end of the wheel slide. When the standard
diameter wheel is worn down appreciably, the surface speed has diminished to
such an extent that the efficiency of the wheel is very low. Appropriate
sheave changes may now be used so as to re-establish, as nearly as possible,
the proper wheel surface speeds (with no change in belt length).

f

WORK SPEED

It is necessary for efficient grinding to establish the correct work and
traverse speeds.

The work speed will depend on the nature of the material,
the wheel being used and the finish required. In general, the work speed and
the traverse speed should be the fastest possible and still obtain the desired
results.

Increasing the work speed tends to make the grinding wheel act

softer.

TRAVERSE SPEED

l!i

The traverse speed should be adjusted when rough grinding so that at

each revolution of the work the table will advance a distance somewhat less

than the width of the grinding wheel. For finish grinding, the table speed

is greatly decreased.

Here again, only experience will teach an operator

what work and table speeds to use.

•I

35

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*\

YIBRAT10N

Vibration in a grinding machine is one of the chief causes of difficulty

and precludes all chance of obtaining a good finish. Occasionally the source

can readily be located but at other times its origin is very obscure.

Vibration is traceable to many things. An out-of-balance wheel will
produce a pounding noise and show up in the work surface. Too hard a wheel
will also cause chatter marks. If the spindle bearings have been abused or
subjected to severe service, they wear excessively and good work cannot be

produced.

An out-of-balance motor armature can be the cause of vibration, and
it is for this reason that NORTON COMPANY prefers to supply motors with
machines. The armature of every motor used is removed and checked for
balance before mounting.

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GRINDING HINTS

Before mounting work in the machine, see that centerpoints

and center holes in the work piece are clean.

Lubricate the center holes with a good grade of commercial

center lubricant.

See that center holes in work piece are not damaged, rough.

or out of round.

If head and footstock centers are removed, wipe out spindle

hole and clean center shank before replacing center.

Do not move headstock or footstock until the table has been

cleaned.

Always clamp the driving dog securely to the work.

Adjust the driving pin in the face plate so that it engages the

driving dog securely.

Use plenty of coolant of the proper type and consistency for the

work being ground.

Adjust the coolant nozzle so that the coolant stream falls on

the work at or above the point of grinding contact.

Keep the machine clean and properly lubricated.

37

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DESCRIPTIVE OPERATION — DEEP GROOVE OR SHOULDER GRINDING

ATTACHMENT (1" Maximum Movement)

1. Wheel Slide Retracted

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Solenoids S| and S2 are de-energized and so the wheel slide piston is in

the back position and N. O. body feed solenoid valve S2 is open. In

addition, the shoulder feed valve piston is in contact with the end cap C
and port P is open to atmospheric exhaust.

Wheel Slide Rapid Traverse Forward

2.

Pulling the wheel slide lever forward, energizes S^ and S2 simultaneously
which closes port P2. At the end of the preset slide rapid traverse
movement,
further movement closes port P.

3.

Shoulder Feed Movement

With port P2 closed, the oil is trapped so that the wheel feed piston
cannot move and the only wheel slide movement at this phase is due to
the shoulder feed which continues until the wheel slide piston contacts

the cylinder end cap. This terminates the shoulder feed.

4.

Body Feed

Simultaneously with the shoulder feed termination, Dog D contacts LS2
which de-energizes S2 and opens port P2. Now the wheel feed piston is
free to move to the right and the body feed starts.

Shoulder Feed Setting

5.

a.
b.

c.
d.

e.
f.

g

#

nut N contacts the end of the shoulder feed valve piston and a

Back off nut N.
Bring the slide forward under power until the piston contacts the
end of the cylinder.
Turn in nut N to contact the end of the shoulder feed valve piston.

Adjust

Retract the wheel slide.
Turn the nut N a distance equal to the desired shoulder feed plus 5/32".

Close valve V and adjust shoulder feed by means of valve shown.

(The backlash is compensated for at the start of the rapid traverse
movement).

dog D to de-energize solenoid valve S2.

f

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Note

In order to make the attachment inoperative open the shoulder feed adjustment
valve and valve V.

The above setting applies to the nut N arrangement only. With the newer
design the setting is direct reading of the desired shoulder feed on the
scale. Item " g" however, will apply in either case.

39

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NORTON WHEEL HEAD MOUNTED

AUTOMATIC TRUING DEVICE

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*

A - Solenoid Valves

B - Speed-up Valve

C - Right-hand Speed-up Dog

D - Left-hand Speed-up Dog

E - Limit Switch

F - Diamond Picker Feed

Ratchet

G - Ratchet Crank Actuating

Adjustment (Right-hand)

H - Ratchet Crank Actuating

Adjustment (Left-hand)

J - Adjusting Stop Screw

(For right-hand

of main hydraulic

movement

piston)

K - Booster Cylinder*

L - Diamond Holder

M - Main Form Bar

N - Main Form Bar Follower

O - Booster Bar Follower*

P - Detent and Ratchet Lock-out

R - Diamond Manual Adjustment

S - Rise Index Bar*

T - Booster Bar*

TJ - Booster Limit Switch*

V - Auxiliary Speed-up Dog

Handwheel

(For two-wheel setup only)

W - Adjusting Screw - Rise

Index Bar

*These parts are furnished only when

the truing operation
of the Booster Arrangement to the Device,
and this is when the truing action involves
horizontal and vertical traverse of the
diamond tool.

requires

addition

41

SECTION VII WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE (Optional)

It is imperative, as is the case with any device of this type, that
it be used properly. For this reason we urge the close attention
of the operator and maintenance personnel to this section.

Operation

To start this device, the Operator actuates the push

button labeled "Truing Start" which is located on the electrical

control apron on the front of the machine. This energizes solenoid

valve

energizing of this valve allows pressure oil into the left-hand

side

slide.

cylinder exhausts through speed-up valve "B" and through the

"A" which is shown in the drawing on page 40.

of

the truing slide hydraulic cylinder for movement of the

At the same time, oil on the right-hand side of the

The

vl

needle valve which is mounted on the rear of the device.

Fast Traverse

When the diamond truing tool moves from its rest

position, the right-hand speed-up dog "C" depresses the speed-up

valve plunger to allow the exhaust oil to flow freely through

speed-up valve "B. " This gives the truing slide a fast traverse

from the rest position of the diamond tool to the edge of the

grinding wheel. On reaching the wheel, the speed-up dog rides

off the plunger and closes the speed-up valve "B. " With this

valve closed, the exhaust must pass through the needle valve which

gives the required truing speed to the tool slide.

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42

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Fast Reversal

When the diamond reaches the opposite edge of the

grinding wheel, the left-hand speed-up dog "D" depresses the

plunger which again opens passage through the speed-up valve

" B, M and the slide goes through fast reversal back to the edge

of the grinding wheel. The reversal is accomplished by the

truing slide actuating limit switch "E" which is mounted on a

slotted bar fastened to the top of the mechanism. This action

de-energizes the solenoid and reverses the hydraulic pressure

from the left-hand to the right-hand side of the truing slide

cylinder. Oil on the left-hand side of the cylinder now exhausts

through

Automatic

/

going through its fast reversal, diamond picker feed ratchet

F" is actuated by ratchet crank actuating adjustment M G. "

This gives diamond holder 11 L

down-feed.

return pass, the diamond picker feed ratchet "F" contacts

ratchet crank actuating adjustment ”

diamond.

the speed-up valve "B" and through the needle valve.

Down-Feed

At the end of the first pass, while the slide is

n the desired amount of automatic

(See "Adjustments’1 on Page 44). At the end of the

H" which feeds down the

The

slide then comes to rest and is set for the next

f

truing operation.

by means of the wheel feed handwheel the amount necessary to

compensate for the reduction in wheel diameter.

The Operator now brings the wheel forward

43

ADJUSTMENTS

I
I

Vertical Adjustment of
Diamond Holder

This adjustment is made by Handwheel M R. "

Position of Slide at Rest

This

Screw 11

Distance of Fast Traverse

to the edge of the grinding wheel is determined by the location

of right-hand Speed-up Dog "C. 11

Truing Speed

mounted on back of the device.

Distance of Fast Travel
at Reversal

J. 11

The distance of fast traverse from the rest position

The truing speed is controlled by the needle valve

position is set by adjustment of Adjusting Stop

1
i
i

■

1

■

■

■

This distance is determined by the location of the

left-hand Speed-up Dog n

Point of Reversal

This point is determined by the location of Limit

Switch "E. M

Amount of Down-Feed

The amount of automatic down-feed is controlled by

Crank Actuating Adjustment "G" on the right-hand side and by

"H" on the left-hand side.

Slide Motion - Horizontal Plane

To adjust the slide in the horizontal plane use the
lugs cast integral with the hydraulic cylinder and the adjusting
screws on the back of the device at both ends of the cylinder.

D. n

44

■

■

■

■

■

■

■

■

INSTRUCTIONS FOR SETTING UP (Refer to Drawings on pages 40 and 66)

1. Check gib (61) for tightness.

2.

After gib is secure, adjust tool slide (27) by loosening all adjustable

rollers (51 and 52). Tighten top right and two bottom front adjustable
rollers until slide is firm in front to back plane, but rolls freely; then
check and lock. Next, set top left rear roller until in firm contact and
lock by set screw on top. Adjust top left front roller to firm contact:
then check and lock. Adjust side rollers on left side until contact is
firm, but free rolling action is maintained; then check and lock. The
slide should now move freely but without play.

3.

Straighten table by indicating or grinding a straight bar.

4.

Place form bar squarely on bracket and spacer (36 and 40) and seat
securely. Be sure form bar is up against tool slide (27).

5.

Position form bar by first loosening clamp screws in bracket and
spacer (36 and 40).

Adjust nuts on screws (44) so that shape of form bar rests in proper

6.

position on wheel.

7.

Reclamp all nuts and screws.

8.

Retrue wheel.

Grind and check for straightness.

9.

If taper exceeds . 001", loosen the four binder screws on the back of the

10.
truing device.

adjustment screws,

Note: If taper is within . 001", final adjustments should

Then, pivot the truing device by means of the taper

("A" for taper, "B" for binder screws).

be made by slight movements of the swivel table.

Stroke of diamond should be set to clear edge of grinding by approx. 1/8".

11.
Screw (42) adjusts left-hand end of stroke.

Limit switch (E) adjusts

right-hand end of stroke.

After preliminary truing, remove follower (N) and diamond holder (L)

12.

with diamond in place. Then, stone follower to same shape as diamond

in order to produce correct shape or radii on grinding wheel.

45

r

Picker feed is set by adjusting ratchet crank knockout (15) on

13.
right side and ratchet feed bracket (18) on left side.

Pawls (96) should engage in gears (75 and 77).

14.

Be sure ratchet lockout (P) is secured in ratchet (114).

15.
Graduations on handwheel denote amount of picker feed.

MAINTENANCE

Maintaining Accuracy

To maintain accuracy of truing, the rollers of the

Wheel Head Mounted Truing Device must be kept tight.

The dove

tail gib must be adjusted to give a snug sliding fit on the ways.

Lubrication

Oil the rollers and ways frequently to obtain the

maximum efficiency of the device.

46

1

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47

SECTION VIII

PARTS

INDEX

Knife Edge Metering Valve
Headstock -- A.C

Headstock -- D.C

Footstock & Diamond Tool Holder
Wheel Guard and Parts
Wheel Slide and Parts

Reciprocating and Shoulder Grinding Attachment .
Cross Feed Cylinder
Wheel Feed Apron .

Feed Screw and Parts

Combination Valve
Push Button Apron and Cycle Control Mechanism

................

............................................................

UNIT

PAGE

49

50

51
52
53

■

i

m

!■

54
56
57
58

60

61

62

■

Table Traverse Cylinder .

Table Control Valve

Main Control Valve Parts

Hand Traverse Apron
Miscellaneous Mechanisms
Wheel head Mounted Automatic

Booster Mechanism

Bearings

Please specify Name and Number of Drawing on which a required

part is shown

Please specify machine Serial Number with every inquiry or order

&

Rollers Wheel head Mounted Truing Device . .

Wheel head Mounted Truing Device . . .

Truing Device

.............................

63

64
65

66
67

68

72

74

■

■

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48

■

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ASSEMBLED

J SINGLE VALVE

6 CTU 1071-Lnclosure.
6 CTU 1072-Spring ReTainer PlaTe
6 CTU 107 3-Valve. Screw
6 CTU 1074-Wire Spring

6 C T U 10 66 -Valve
6 CTU 1067-Valve Plunger

Pin.

_____

_

* 6 CTU 1068-Valve Body-Single
° 6 CTU 1069-Valve Sleeve

____

6 CTU 10 7 0-"O" R ing PacKing...

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6 CTU 1075 -Valve

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6 CTU 1079-Keeper Pla1~e

6 CTU 1080 - Valve

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6 CTU 661
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6 CTU 6 65- Drive

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6 CTU 668

6 CTU 669 - Drive Pin
6 CTU 670-BallBrg Spacer (Outer)
6 CTU 67 I

6 CTU 672 - Center
6 CTU 685 - Ball Brgs. (2.)

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6 CTU 6 7 8 - Eccen-t

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6 GTU 7 0 I -Sleeve

6 GTU 702-Wate.r Hood

6 GTU 7 03 -Seal Ring
6 GTU 704-Bellows_
6 GTU 705-Bellows Insula-tor

6 GTU 706-Truing Rod
6 CTU 707-FootstocK

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6 GTU 714-Norton

6 CTU 715-Spindle Clamp (Front)

6 G T U 7 16

6 CTU 7 I 7 - Body

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6 CTU 7 2 0 -Spnng

6 G T U 7 01 -Sleeve

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6 GTU 7 2 2

6 GTU 723

6 GTU 7 2 4 - Foot srfocK

6 GTU 725-End

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#-6 CTU 154 -Screw

(^•Attached Parts)

6CTU 155-Upper BracKet
6 CTU I56-I"(qate Valve
6 CTU 159-Stud
6 CTU 157-Wheel Quard
6 CTU 160-Swivel Joint-Short
6 CTU I 6 1-Shoulder Stud

6 CTU 158-Lower BrocKet
6 CTU 167-Stud
6 CTU 163-Water Spout

6 CTU I 64-Wheel Sleeve

6 CTU 165-Wheel Flange

SE-66G-A

SE-72I-A

WHEEL GUARDS PARTS

6 CTU 166-Mist Quard

ORWQ e»t n RAND 3/14/51

V FONTAINE

6 C TU 60 0
6 CTU 60 1
6 CTU 60 2
6 CTU 60 3
6 CTU 60 6
6 CTU 60 4

6 CTU 60 5

6 CT U 60 7
6 CTU 6 08
6 CTU 6 09

6 CTU 633

6 CTU 634
6 CTU 635

6 CTU 9 68
6 C TU 969
6 CTU 970
6 C TU 9 7 1

6 CTU 972

.6 CTU 643

6 CTU 644

cn

6 CTU 6 10
6 C T U 611
6 C TU 612
6 C T U 6 13
6 CTU 6 I 4
6 CTU 615
6 CT U 6 16
6 CTU 618
6 CTU 6 17

6 CTU 6 4 I

6 CTU 619

6 CTU 632
6 C T U 6 2 0
6 CTU 62 l_
6 CTU 62 2
6 CTU 62 3
6 CTU 62 4
6 CTU 625
6 CTU 626-

SE-700-A

SE-8-47-A

__

__

___

6 CTU 64 2
6 CTU 6 3 1
6 CTU 646

6 CTU 6 4 5

6 CTU 6 4 7

WHEEL SLIDE 5 PARTS

6 CTU 648
6 CTU 649

6 CTU 651
6 CTU 650

ORWQ BT H RAND

V. FONTAINE

3/7/51

m mm

m m m m

IJ

cn

6 CTU

600

601
602
603
604
605

606
607
608
609
610
611

612
613
614
615

616
617
618

619
620
621

622
623
624
625

626
627
628

WHEEL SLIDE AND PARTS -

PART NAME

Hood

Balancing Weight

Wheel Sleeve Flange

Washer
Hinge Pin-Hood
Wheel Safety Arm

Hood Hinge Bushing
Screw

Oil

Slinger

Hood Clamp

Stud
Shoulder Screw
Spindle Box Nut

Locking Ring
Wedge Bolt
Oil Tube

Spindle Box Case - Large

Spindle Box - Large
Wheel Sleeve

Thrust Shoulder
Thrust Ring

Pump Worm
Thrust Yoke Pin

Thrust Yoke Bracket
Thrust Yoke
Spanner Nut

Thrust Ring Stud (Lower)

Pump Drive Shaft
Worm Gear

PART NAMES

6 CTU

629

630
631
632

633
634
635
636
637
639
640

641
642
643
644
645

646
647
648
649
650
651

968
969
970

971
972

PART NAME

Spanner Nut

Sight Glass Retainer
Wheel Spindle

Thrust Ring Stud (Upper)
Wheel Guard Cover
Wheel Guard

Link
Wheel Slide Cover (Left)

Safety Arm Lever
Wheel Slide Cover (Center)

Fixed Thrust Bracket
Thrust Yoke Stud
Spindle Belt Guard

Pump Bracket Shim
Lubricating Piimp Bracket
Wheel Slide Cover (Right)

Hex. Nut

Spindle Box Case (Small)
Washer

Spindle Box (Small)
Spindle Sheave
Wheel Slide

Filter
Holding Plate
Check Valve Gasket

Valve
Manifold

6 CTU 2200 Dial Indicator

6 CTU 2220 Laver

End

6 CTU 2201 Control Lever

6 CTU 2202 Knob

6 CTU 2203 Indicator

------

--
Support

6 CTU 2204 Screcj _
6 CTU 2205 Pm __
6 CTU 2206 Bracket

6 CTU 2207 P,n

6 CTU 2208 Support
6 CTU 2209 Spring

Arm fL.H)

6 CTU 2210 Stud - Upper
6 CTU 221 I Pm —-■—

6 CTU 2212 Stud
6 CTU 2213 Bracket
6 CTU 2214 Thrust

Yoke

^

-------

6 CTU 2221 Eccentric Cap
6 CTU 2222 Drive

Go liar

6 CTU 2223 Eccentric
6 CTU 2224 Connect

ng

i

Rod

6 CTU 2225 Pin

6 CTU 2226 Washer
6 CTU 2227 Shaft

6 CTU 2228 Drive
6 CTU 2229 Ke

6 CTU 2230 Taper

Shoft

y

Pm

---- 6 CTU 2231 Bearing
6 CTU 2232 Ball
6 CTU 2233 Bracket

6 CTU 2234 Worm
6 CTU 2235 Spacer

Gear

6 CTU 2236 Gear - Driver

6 CTU 2215 Ring Stud - Louier
6 CTU 2216 Pm __

6 CTU 2217 Spring

SE 2091 A

SE 2092 A

RECIPROCATING

A

6 CTU 2237 Gear - Idler
6 CTU 2238 Body

6 CTU 2239 Cap

S 26 J3

Oj * k

t

•s t

fr

*

£

SHOULDER

GRINDING

ATTACHMENT

p 5. /Cs*

6CTLH0 Cylinder

End Cap (2)

6CTU-II

Oil Seal

6GTIM2 PacKmg Support

P

l s

6CTU-I3
6CTU-I4

«; 6CTU-I5

-•4

ton _

Tube

Pist on

Rln<g (2)

6CTU-23 Packing

6CTU-24

6CTU-26 "O'' Ring

Cylinder

Cap

Support

(2)

(2)

(2)

6C1U-I6 Ball Bearing Cap

SE-4040-A

SE-40^0-A

3T6CTU-I9 Valve

6CTU-20

6CTU-2I

"o" Ring

WHEEL FEED CYLINDER

Body

Body

Cap

6CTU-25 Tube R.H.

(2)

RAHO

«

6 CTU 1030
6 CTU 1031___
6 CTU 1032
6 CTU 10 3 3

Ui

00

6 CTU 1025

6 CTU 1026
6 CTU 1027
6 CTU 1028
6 CTU 1029

_

6 CTU 1037
6 CTU 1038
6 CTU 1039

6 CTU 1040
6 CTU 1041
6 CT U 1042
6 CTU 1043
6 CTU 1044
6 CTU 1045
6 CTU 1046
6 CTU 1047

6 CTU 1048
6> CTU 1049

SE.-762-A
SE-764-A

m m

6 CTU 1034

6 CTU 1035
6 CT U 1036

6

CTU 1061

6 CTU 1062

6 CTU 1063

6 CT U 1058

-6 CTU 1059
6 CTU 1060

WHEEL FEED APRON

i

6 CTU 1064

6 CTU 1065

DRWQ BY

H RAND

V FONTAINE

2/3/3/

WHEEL FEED APRON

PART NAMES

CJl
CD

6 CTU

1025

1026
1027
1028
1029

1030
1031
1032

1033
1034

1035
1036
1037

1038
1039
1040
1041
1042

1043
1044

PART NAME

Stop Block
Index Gear
Collar
Clutch Lever Bushing
Torrington Needle

Bearing (B-2212)

Feed Screw Shaft
#1 Machine Handle
Clutch Lever

Wheel Feed Apron

Pawl Lock

Spring
Stop Arm Stud

Hand Wheel Bushing
Hand Wheel Stud
Wheel Feed Index Hand Wheel
Clutch Spool Seal
Sleeve - Short
Spool
Pinion Spring
#4

Machine Handle

6 CTU

1045
1046

1047
1048
1049
1050

1051

1052

1053
1054
1055

1056
1057

1058
1059
1060
1061
1062
1063
1064
1065

PART NAME

Locking Ring

Hub Cap
Detent Ratchet
Detent Ratchet Housing
Index Bushing - Short

Shoe
Bell Crank
Bell Crank Bracket

Detent Plunger
Bell Crank Shaft
Spring (3/8 O.D. x 2 lg. x

. 119P x . 047)

Feed Screw Gear
Apron Cover (L. H. )
Stop Arm

Detent Insert

Screw

Knob
Index Pinion

Pin

Detent

Plunger

Spring (. 054 wire)

6GTU 2 07 2-Adjustment

6 CTU 2073-Washer

CTU

2 0 7 4-5olenoid

CTU 2075

6 CTU 2076-Cushion

6 CTU 2077-Piston

6CTU 2078-Washer

6 CTU 2 0 7 9 - Cy I i nde r

6 CTU 2080

Cylinder

6 CTU 20 81

,6 CTU 2 08 2

6 CTU 2083 - Feed Screw Quide

6 CTU 2084-Ball

6 CTU 2085-Halt Nut

BracKet

Cushion

PI unger

-Piston Rod

-Piston Rod

-Cyl inder Head

Cap

Sleeve

Bearing

(£

)

6 CTU 2086-
Solenoid stop BIOCK

6 CTU 20 8 7-Spring

cji

o

6 CTU 2088-Washer
6 CTU 2089-Valve
6 CTU 2090-
6 CTU 2091 -Valve Piston
6 CTU 2092-Valve
6 CTU 2093-PacKing
6 CTU 2094

6 CTU 2095-PacKing

6 CTU 2 096

6 CTU 2 0 97 - Oi
6 CTU 2098-
6 CT U 2099 - Oil WicK

SE-I008-A

SE> 1009-A

Oi 1 Seal

Piston

Spring

Sleeve

-Vim PacKing (3)

-PacKing Cland

l

Seal

Oil WicK Strap

Support Ring-Inner

Support

______

Ring-Outer

6CTU 2 1 70 Gasket

C

6CTU 2171 P i 5 ton (2)

L.H.)

__6CTU 2181 Valve

\ \6CTU 2182 Piston

Bod

y

(Small)

6 CTU 2 I 7 3 N u t

6 CTU 2174 Plate

6 CTU 2 175 Va Ive

6

03

CTU 2176 End Plate

6CTU 2l72Push Rod

.6 CTU 2 183

Gasket

6 CTU 2 184 Sic (Z I Ball

CR H )

6 CTU 2'9! Valve
6 CTU 2 192 Adaptor

6 CTU 2 193 Selector Valve Body
6 CTU 2 194 "O* R \ng

6 CTU 2 195 Valve

Body

6 CTU *2 177 Lever
6CTU 2 I 78 Spring

6

CTU 2179 Switch

6 CTU 2 180 P is ton

S.E. IOC3- A
S E 1098-A

(2)

Bracket

(L.H.)

6 CTU 2 189 P in
6 CTU 2 190 Metering Valve (2)

COMBINATION

2 I 77

VALVE

6 CTU 2 196 Cap

6 CTU 2197 Truarc

Ring

O}

CO

6 CTU 961
6 CTU 962

- Enclosure

-Screw

___

__

6 CTU 963-Valve Sleeve

6 CTU 964-Screw
6 CTU 965-
6 CTU 966 -

Valve Body

O Rind

6 CTU 96 7 - Valve _Z
6 CTU 95 4 - Knob

6 CTU 945-

6

CTU 955 -Recess Cover

Operating Lever Extension

___

__

__

___

6 CTU 956-Qib Screw.
6 CTU 947-Switch Panel

6 CTU 948
6 CTU 946-
6 CTU 960-Spring

6 CTU 951 - p

-Operating Lever.
Operating Lever Support

__________

m

___

______

6 CTU 950-Indicator Pin
6 CTU 949-Instruction Plate

6 CTU 959-Switch Plunger
6 CTU 95

6 CTU 95 7 -Spring__

3-Operating

_______________

6 CTU 95 2 -Operating Lever 5leeve_
6 CTU 958’Apron Cover-R.H.

- 7 fc © - A

’

i

«

77 O * A

PUSH BUTTON APRON

__________

______

_________

Lever Button

_______

CYCLE CONTROL MECHANISM

ORwe, BY 2/27/31

H RANO
V rONTAlNC

i

—

-

r\

cn

CO

6 CTU 2 040-"o"Ring

6 CTU 2041 -Valve Adaptor
___6 CTU 2042 -Bleeder
___6

CTU 2043 -Bleeder Valve. Body 12)

--------6 CTU 2044

'//

ft

%

6 CTU 2057-Dowel Pin(4)\V

6 CTU 2058-Pin

------------------------

6 CTU 2059-0 Ring PacKing
6 CTU 2060-wiper
6 CTU 2061-PacKing

Strip

--------

--------------

Valv<z. (SI

-"O Ring PacKing

CTU 2045 -Adaptor 12)

77

(2)

____6
____6
____6 CTU 2048-0"

-------6

■

____6

CTU 2046-Pis+on

Rod

CTU 2047-Cylinder End CapfLH.I

Ring PacKing
CTU 2049-Tru-Aro
CTU 2050-Cylinder

6 CTU 2051-Base Trough

(L.H.I

6 CTU 205 2 -Piston IS)
6 CTU 2053 -"o”

6 CTU 2054-Seal

Ring PacKing

Ring Ub)

6 CTU 2055-Special Screw 12)

■

u

o

6 CTU 2056-Table Cylinder BracKet

o

o

5E-8fe5-A
SE-998-A

6 CTU 2062-Tie Rod BracKet
6 CTU 2063-Base

6

CTU 2064-Cylinder End Cap (R.H.)

6 CTU 2065-Tie Rod (2.)
6 CTU 2066-PacKing

Trough (R.H )--------

—

Cqland (2.)

(2.)

6 CTU 2067-Spanner Nut (4-)

6 CTU 2068-lnstruc+ion Plate
6 CTU 2069-Stop Plate (2)
6 CTU 2070-Piston Rod BracKet
6 CTU 2071 -Pin (2). ----------

HYDRAULIC TABLE TRAVERSE CYLINDER

-----

--------

--------

ORW^ BT

n RANO

V FONTAINE

■v

e/.:*V6i

6CTU 2 2 75
6 CTU 2 276

6 CTU 2 277
6 CTU 2 2 78

6 CTU 2 2 79
6

CTU 2280

6 CTU 2281

6 CTU 2282

o, 6 CTU 2283

4^

6CTU 22 84
6 CTU 2285

Stop Pin-
Knob Stud
*2 Bal I "■

Chack Nut
Screw

Revcrsa Lever
Valve Oparat inc^ Lever

Hal f Cap
Lever Stud-Sol id

Table Dwel I Valve

Valvc Spoo 1-2

— 6 CTU 2291

- 6 CTU 2292
6 CTU 2 2 93
6 CTU 2 294

6 CTU 2295
6 CTU 2296

6

CTU 2297
6 CTU 2 298
6 CTU 2 299
6 CTU 2300

O R i ng Pack ms - 4

Val v<z SI
Val

vq Pi

Manif old

0 R i

P i s ton

n£

Ret a

Stop

e eve.

ston

i ner

Shut 1 I e Val v a
End Cover-RH.

Val vc Cap
Duel I Val va

6 CTU 2286

6

CTU 2287

6 CTU 2288

6 CTU 2 2 89

6

CTU 2290

S.E 10 5 9-A
SE 1092-A

n

Stud-Speci al
Pack in<g> Retainer
End Cover-L.H. ^

Slow Down Valve Piston
Slow Down Valve Sleeve

r

A

6 CTU 2301

TABLE

CONTROL

VALVE

6 CTU 2302

\

6 CTU 2303
6

CTU 2304

Val v e Sic

Screw-2
Washzr

Bod

y

eve

L.

6 CTU 2 150 Needle Valve Stem-Lg. {
6

CTU 2151 Needle Valve Stem-3

6

CTU 2152 Needle Valve Cap
6 CTU 2 153 Needle Valve Cap-3
6 CTU 2 154 Instruction Plate
6 CTU 2 155 Knob-2

0

6 CTU 2161 Valve

*;*s

X®

I

te-;f

i

'WBM *

Bod

Casks t

y

^Y1

I

4

< v

4

I

EE

^

j$

6

CTU 2162 Yolk Lever

^0

6 CTU 2163 Start-Stop Shaft

ft

\

jv ^

%

§

;

6 CTU 2164 Instruction

Plate

Si

A

$

4

i £

i
I

k

s

0

0

0

it-

N

6 CTU 2 165

Knob

S L 10 93 W

nr ior

,?• n

6 CTU 2156 Knob-2

6 CTU 2 157 Oi Icr _

6

CTU 2158 Start-Stop Leyezr

6 CTU 2159 Wire ---------------------—

6

CTU 2160 Start-Stop

Plunger

MAIN CONTROL VALVE PARTS

__

\

\

\

\

\

'N.

N

%ri

,A.

I

|| ^ 6

6 CTU 2167 Indent

CTU 2166 Piston

Valve Key
Plate

J

6 CTU 470“Machine. Handle
6 CTU 47

6 CTU 499-Bai 1

05

03

6 CTU 472-Screw
6 CTU 473-Washer
6 CTU 474-Ball Bearing

6 CTU 475-Ball
6 CTU 500-Ball Bearings (E)

1 - Handwheel

Bearing.

_

Retainer

6 CTU 476-Clutch

6 CTU 477- Apron

6 CTU 478-Clutch dear

Ring (Upper)

Bearing

6 CTU 479-Shipper

_____

c

s

f

cap_

________

s

Cover

$

1 /

_
___

ForK

6 CTU 498'Bali Bearind

/

/ ft CTU 480-Pmion Shaft

, / 6 CTU 481- Bail

'/

/ /

//

/ /

/

f

: j

•Vj

V i

7

p.

/

31

%&'

sL /

/

J / / 7

—

/ / /

_

____

/ /

/

Q,

X.

CTU 482-ld, “

/ 6 CTU 4

6 CTU 484-Idler Shaft

/ / 6 CTU 485-Bail Bearing Cap (Lower)

I

77

83-Idler dear (inner)

6 CTU 486-Ball

7

/

To

WA

%

ST,

.

6 CTU 495- Piston

6 CTU 496-Spring

6 CTU 497-Hand

^6 CTU 502-Ball

2'

3f“rl

Bearing Retainer

Ring (Lower)

6 CTU 50
6 CTU 487-Plug
6 CTU 488-ROCK Pinion

^
\ . 6 CTU 489-RacK Pinion

--------------

2y

6 CTU 490-Cylinder
6 CTU 49 1- Spacing

---------------------

\ 6 CTU 49 2-

v

--------------------

6 CTU 493-Piston

1 - Ba 11

— Shaft

Spacing washer

Co I la r

Spacing

- Collar

Cushioning

Spring

6 CTU 494-RacK Pinion

Traverse

Apron

Bearing

Bearing

Cap

SE-717 -A

SE- CSO-A

SINGLE SPEED HAND TRAVERSE APRON

Drwg bvj H Rond

V Fonfomt

\o/\/a\

r

T

6CTU 788-Opercrhng
6CTU 78 7-
6 CTU 786-Norton Knob

Operating Lever Ex-fens ion '

CONTINUOUS POWER CROSS FEED

Lever

6 CTU 796-Valve Body

6 CTU 795-Valve PisTon
6CTU 794-Valve Sleeve
6 CTU 793- Si-op

6CTU 797-Pis-ton Extension

PLAIN MACHINE

6 CTU 799- Clomp Boll" Nut (3)
6 CTU 802 - R. H Oog(Z).

6 CTU 801 -Sa-feTy Bunter____
6 CTU 884- Fixed Bunter
6 CTU 800-AdjusTing Screw

SLIDING TABLE DOCqS

__

o

•---

f

s

6 CTU 809 - Bushing

_6CTU 81 3

6 CTU 81 0 -

V •

—6 CTU 805-l.H.
—6

CTU 806-Adjus+able Bunter

^6 CTU 807 - Spring

Retainer

-Swivel
Swivel Nut

V

/

i

)

■

'®

Reverse.Do^

BlocK

Pivot-

<>

N

/

\\V6 CTU 7

\Vy6 CTU 798-

\

V6CTU 792-Screw Coupling

V6CTU 790-indicator Pm

T> CTU 791 -insTrucTion PlaTe

SE-7I2,-A

SE-7I4-A

89-Si-raigh-t Pin

Pivot-

Pin

' l_6 CTU 812- Swivel
_6 CTU 814 -Swivel

6 CTU 811 - Swivel BracKet

SWIVEL TABLE ADJUSTMENT

Screw

Screw

Nut

MISCELLANEOUS MECHANISMS

4

a

rs

,97 '9°

?

59

l09-®>

05

00

"66

I

{

S.E10I9-A

NORTON WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

v

26

© 29

c42

©-43

Drw; by KL.Rand

i

io/ir/st

NORTON WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

Identification of Parts on Drawing SE-1019-A

J

[/

Code No. Req

1

2
3

4

5

7
8
9

10
11
12

05

CO 14

15
16
17
18
19

20

21

22
23

24

25
26
27

1 d. Part Name
1
4
1

2

1

36

1
1
1

1

3

1
1
1
1
1
1
1
1

2

1

3

1

3

1

4

1

Cylinder Bracket
Screw - hex hd-
Cylinder
Screw - hex hd cap-5/8x2
Spring
Screw - soc cap - l/4x5/8

Valve Cap

Piston

Valve Rod

Front End Cap

Screw - soc cap-1/4xl/2

Switch Bracket
Nut - hex - 3/8
Tee Bolt
Ratchet Crank Knockout
Nut - hex - 3/8
Tee Bolt
Ratchet Feed Bracket
Nut - hex - 3/8
Tee Bolt
Tee Slot Bar
Screw - soc cap-1/4xl -1
Cylinder Bracket Key
Screw - flat hd mach-1/4x5/8

Thrust Plate
Screw - soc cap-3/8x3/4

Tool Slide

Req

Code

No.

28

3/8x1-1/2

*

29

30

31

32
33

34

35
36
37
38
39

40
41
42
43
44
45
46
47
48

/4

49

50

51

52
53

54

1 d.

1

2

1
4
1
1
4
1
1

4

1

2

1
1
1

1
1
1

8

4

8

4
4

8
8

1
1

Part Name
Piston Rod

Nut - hex - 5/8
Packing
Screw - fil hd mach-1

Gland & O-Ring

0-24x1 /2
Packing
Cylinder Head

Screw - soc cap-5/16-I6pxl

Piston
Form Bar Bracket

Screw - soc cap-5/16-I6pxl

Form Bar Support

Screw - soc cap-3/8xl

-1 /4

Adjusting Block

Screw - soc cap-5/l6x5/8

Adjusting Screw Vertical

Nut - hex - 1/2
Stud
Tool Slide Cap

Screw - soc cap-3/8x3-l/2
Tool Slide Cap Cover

Screw

- rd hd

mach-10-24x5

Bushing
Eccentric Short
Needle Bearing
Roller

Sleeve

Roller Guide

/16

* See Note at end of Listing on Screw Pitch.

(Continued on Next Page)

m

Identification of Parts on Drawing SE-1019-A

Code No.

55
56
57

58

59
60
61

62

63

64

65

66

67

68

69
70
71

o

72
73
74
75
76
77
78
79
80

81
82
83
84
85
86
87

Req

1 d.

8
1
1
2
1
2
1
1

2
2

4

1
2
2

2
1

1
1
2
1
1
1
1
1
4
1
1
1
2
1
1

1

Part Name
Screw soc cap-5/I6xl-1/4

Roller Guide

Follower

Screw - soc cap-3/8x3-

1

/2

Key
Screw - flat hd 8-32x5/8

Gib
Gib Screw
Eccentric Stud
Dog - R. H. & L.H.
Screw - soc hd cap-5/I6xl-1/4
Steady Bracket

Screw - soc cap-3/8xl-l/2

Washer
Tapered Pin
Steady Finger
Screw - soc cap-5/I6xl

-1

/4
Spring
Nut
Spanner Nut
Gear

Pin
Ratchet Wheel
Ratchet Crank
Collar
Screw - soc cap-5/l6x5/8
Sleeve Cap
Sleeve Bushing
Diamond Nib Holder
Screw - soc cap-1/4xl/2
Nib Holder Bar
Sleeve Bushing
O-Ring Packing

Code No.

88
89

90
91
92
93

94
95
96

97

98
99

100

101
102
103
104
105

106
107
108
109

110
111
112
113
114
115

116
117
118
119

Req

1 d.

1
1
1
2

1
1
1
2

2

1
1
1
1

1
1
11
1
1

1
2
1
1

1
1
1
1
1

1
1
2

1
1

Part Name
Wiper Gland
Diamond Nib
Spring Bracket

Screw - soc cap-5/16xl
Pin
Spring
Pin
Spring

Short Pawl and Long Pawl

(Sold only in Pairs)
Shoulder Screw
Eccentric

Pin
Shoulder Screw
Ball Bearing
Spacing Washer
Eccentric Bushing
Stud
Spacing Washer

Pinion Bracket
Screw - soc cap-3/8xl
Plunger
Knob
Spring
Hand Wheel

Pin
Pinion Shaft

Index Gear

Handle
Bracket

Screw - soc cap-3/8xl-
Screw - soc set-3/8x2-l/2
Screw - soc set-3/8x2-l/4

1

/4

A

Identification

of

Parts on Drawing SE-1019-A

Code No.

120

121
122

123
124
125

126
127
128
129

Unless otherwise specified, screw pitch is as
follows:

1/4-20,

5/8-11,

Req

5/16-18,

3/4-10

1 d.

1
2

6

1

3

1
1
1
1
2

3/8-16,

Part Name

Guard
Guard Guide
Screw - oval hd-10-24 xl/2
Mist Guard
Screw - rd hd-10-24x3/8
Form Bar (Mach. Serial No. Req'd. )

Washer
Screw
Limit Switch Stop
Screw - soc cap-1/4xl/2

7/16-14,

hex hd cap-3/8xl

1/2-13,

-1

/4

>4

S,-25

rr

tSD

IE. I02O-A

A

BOOSTER MECHANISM

NORTON WHEEL HEAD MOUNTED AUTOMATIC TRUING DEVICE

r

m m m

[1

H.LWO

S.KINOSIA.N

I)

BOOSTER MECHANISM

Identification of Parts on Drawing SE-1020-A

Code No.

1

2
3

4 4

5
6
7
8 4

9

<3

10
11
12
13
14
15
16
17
18
19

20

21

22

Req

1 d.
1
4
1

1

2

1

1

4

1
1
1

2

1
1
1

2

1
1
1

2

Part Name
Booster Cylinder

Screw - soc cap-3/8x7/8 *

Cylinder Cap
Screw - soc cap-l/4xl/2
Booster Bar Bracket
Nut - hex - 3/8-24
Packing Gland
Screw - fil hd-10-24xl/2
Cylinder Head
Screw - soc cap-l/4xl
Mono-Pak Seal
Piston Rod
Piston

Index Bar
Screw - soc set-1/4xl-3/4
Nut - check-1 /4
Booster Bar Bracket

Screw - soc cap-1/4x3/4
Screw - soc cap-1/4xl-3/4

Booster Bar
Junction Block

Screw - soc cap-5/l6x

2

Code No.

23

24

25
26
27
28

29

30

31

32
33

34

35
36
37
38

39
40
41
42

43
44

Req

1 d.

3

1

8

1
1

1
4
1

3
2

4
1

2

1

2

1
1
1

1
1
1
1

Part Name

Hose - high pressure
Junction Box Cover
Screw - rd hd-8-32x5/8
Gasket
Junction Box
Manifold

Screw - soc cap-3/8-24xl
Bracket
Screw - soc cap-5
Limit Switch
Limit Switch Screw
Booster Bar Follower

Screw - soc cap-1/4-

/16x2-3

28x1-1

Manifold
Screw - soc cap-3/8x7/8
Lifting Lever
Stud
Roller
Pin

Locking Pin & Chain
O-Ring Packing
Dog (2-wheel setup only)

-1

/2

/4

/2

* Unless otherwise specified, screw pitch is as follows:

1/4-20, 5/16-18,

3/8-16,

7/16-14,

1/2-13,

5/8-11,

3/4-10

1

NOTE

ALL NEEDLE BEARING. (S
ROLLERS (52) ARE THE SAME

in all places

ECCENTRIC (50) WITH BUSHING

(-49) IS USED

O

4

a

marked a on drawing

^2 V 2 ^2 STANDARD DOWELL
IS USED IN ALL PLACES
MARKED B ON DRAWING.

ECCENTRIC STUO (63) IS USED
AS MARKED ON DRAWING.

l) ANO

IN ALL PLACES

.

5E-208OE

TOOL SLIDE CAP

TOOL SLIDE

raHd

3 /as/St

PLACEMENT OP ROLLERS

AND

BEARINGS. NORTON

WHEEL GUARD TRUING

DEVICE

■

I

CROSS INDEX OF PART NUMBERS

■

I

■

■

>

■

PART NO.

6CTU10- 26
6CTU151-167

6CTU470-502
6CTU600-651
6CTU660-686
6CTU690-692

6CTU700-730

6CTU786 -814

6CTU 945-967
6CTU968-972

6CTU

1025-1065

Wheel Feed Cylinder
Wheel Guard and Parts
Hand Traverse Apron

Wheel Slide and Parts
Headstock, AC Drive
Headstock, DC Drive

Footstock

Miscellaneous Mechanisms

Pushbutton

Wheelslide and Parts

Wheel Feed Apron

and Diamond Tool Holder

Apron - Cycle Control Mechanism

PAGE

57

53

66

54

50

51

52

67

62

54

58

6CTU1066-

6CTU 2040-2071

6CTU 207 2-2101

6CTU 2150-2167

6CTU 2170-2197

6CTU 2200-2239

6CTU2275- 2304

1 - 129

1 - 44

1079

Please specify machine Serial Number with every inquiry or order.

Knife Edge Metering Valve

Hydraulic

Feed Screw and Parts

Main Control Valve and Parts

Combination

Reciprocating & Shoulder Grinding Arr

Table Control Valve

Wheel Head Mounted Automatic

Booster Mechanism for Truing Device

Table Traverse Cylinder

Valve

...............

Truing Device

49

63

60

65

61

56

64

68

72

1

Please specify Name and Number of Drawing on which required

part is shown.

75