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SGM2
User guide
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Danfoss SGM2, SGM3 User guide

Technical Information
Fan Drive Gear Motors
Group 2 and Group 3
www.danfoss.com
Technical Information
Revision history Table of revisions
Date Changed Rev
December 2020 Unavailable options removed from page 20 0102
October 2019 First edition. 0101
2 | © Danfoss | December 2020 BC318050073602en-000102
Technical Information

Contents

General Information
Introduction........................................................................................................................................................................................5
Typical Applications........................................................................................................................................................................ 6
Features and Benefits......................................................................................................................................................................7
Quick reference chart for fan drive motors.............................................................................................................................7
Determination of nominal motor size.......................................................................................................................................8
Fan Drive Motors Circuit Illustrations........................................................................................................................................9
Fan Drive Motor Hydraulic Schematics..................................................................................................................................11
System Requirements
Pressure............................................................................................................................................................................................. 12
Speed..................................................................................................................................................................................................13
Hydraulic Fluids.............................................................................................................................................................................. 13
Temperature and Viscosity.........................................................................................................................................................14
Filtration............................................................................................................................................................................................ 15
Filters.............................................................................................................................................................................................15
Selecting a filter.........................................................................................................................................................................15
Reservoir...................................................................................................................................................................................... 15
Line sizing......................................................................................................................................................................................... 16
Motor Shaft Connection..............................................................................................................................................................16
Motor Life..........................................................................................................................................................................................16
Group 2
Model Code for Group 2 Fan Drive Motors...........................................................................................................................17
Model Code for Integral Relief Valve Pressure Setting.....................................................................................................20
Model Code for Mounting Flange/Drive Gears (Group 2)...............................................................................................21
SGM2NC Fan Drive Motors (Group 2)
SGM2NC Technical Data..............................................................................................................................................................22
SGM2NC Model Code Examples...............................................................................................................................................22
SGM2NC 02AA Dimensions........................................................................................................................................................23
SGM2NC 06BA Dimensions........................................................................................................................................................ 25
SGM2NC 06GB Dimensions........................................................................................................................................................27
SGM2YN Fan Drive Motors (Group 2)
SGM2YN Technical Data..............................................................................................................................................................29
SGM2YN Model Code Examples...............................................................................................................................................29
SGM2YN Electric Proportional Relief Valve Data................................................................................................................ 30
SGM2YN 02AA Dimensions........................................................................................................................................................31
SGM2YN 06BA Dimensions........................................................................................................................................................ 33
SGM2YN 06GB Dimensions........................................................................................................................................................ 35
SGM2YN Outrigger Bearing Dimensions...............................................................................................................................37
SGM2VC Fan Drive Motors (Group 2)
SGM2VC Technical Data.............................................................................................................................................................. 38
SGM2VC Model Code Examples............................................................................................................................................... 38
SGM2VC Electric Proportional Relief and D03 Directional Valves Data......................................................................39
SGM2VC 02AA Dimensions........................................................................................................................................................ 40
SGM2VC 06BA Dimensions.........................................................................................................................................................42
SGM2VC 06GB Dimensions........................................................................................................................................................ 44
SGM2VC Outrigger Bearing Dimensions...............................................................................................................................46
Group 3
Model Code for Group 3 Fan Drive Motors...........................................................................................................................47
Model Code for Integral Relief Valve Pressure Setting.....................................................................................................50
Model Code for Mounting Flange/Drive Gears (Group 3)...............................................................................................51
SGM3NC Fan Drive Motors (Group 3)
SGM3NC Technical Data..............................................................................................................................................................52
SGM3NC Model Code Examples...............................................................................................................................................52
SGM3NC 07BC Dimensions........................................................................................................................................................ 53
SGM3NC 07GB Dimensions........................................................................................................................................................55
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Technical Information
Contents
SGM3YN Fan Drive Motors (Group 3)
SGM3YN Technical Data..............................................................................................................................................................57
SGM3YN Model Code Examples...............................................................................................................................................57
SGM3YN Electric Proportional Relief Valve Data................................................................................................................ 58
SGM3YN 07BC Dimensions.........................................................................................................................................................59
SGM3YN 07GB Dimensions........................................................................................................................................................ 61
SGM3YN Outrigger Bearing Dimensions...............................................................................................................................63
SGM3VC Fan Drive Motors (Group 3)
SGM3VC Technical Data.............................................................................................................................................................. 64
SGM3VC Model Code Examples............................................................................................................................................... 64
SGM3VC Electric Proportional Relief and D03 Directional Valves Data......................................................................65
SGM3VC 07BC Dimensions.........................................................................................................................................................66
SGM3VC 07GB Dimensions........................................................................................................................................................ 68
SGM3VC Outrigger Bearing Dimensions...............................................................................................................................70
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Technical Information

General Information

Introduction

Danfoss has for many years built up a wealth of experience with its hydraulic and electro-hydraulic fan drive systems for vehicles and machines operating both on- and off-highway.
Modern fan drives require proportional electronic control to meet new emissions legislation. SGM2 and SGM3 fan drive motors are based on the proven high performance Danfossgear motors.
A proportional pressure relief valve with pilot operated spool (normally closed) is integrated in the cast­iron rear cover of the motor. A gear pump supplies oil to the fan drive motor. The PWM signal to the solenoid pressure relief valve controls the oil flow through the motor which determines the fan speed. The fan speed is controlled to maintain optimum engine and hydraulic system temperatures. The SGM2YN, SGM3YN, SGM2VC and SGM3VC provide this proportional control in an integrated package within the rear cover.
Bi-directional fan motor capability is necessary when it is desired to switch the rotation of the fan blade for such reasons as cleaning debris from a radiator. This allows for more efficient cooling of the machine engine and functions. The SGM2NC and SGM3NC provide the bidirectional capability for use with remote, inline mounted HIC manifolds that provide the reversing flow. The SGM2VC and the SGM3VC integrate the reversing valve capability in the rear cover of the motor.
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Technical Information
General Information

Typical Applications

Due to the versatility, flexibility and reliability of Danfoss fan drive systems, they may be applied in numerous applications, including the following.
Agriculture Machinery
•
On-Off and fully modulating controls
•
Increased engine reliability
•
Automatic or On-demand reversing
Construction Machinery
•
Backhoe loaders
•
Crawler dozer - Crawler loader
•
Wheel loaders
•
Dump trucks - Haulers
•
Excavators
•
Skid steer loaders
Material Handling Vehicles
•
Fork lift trucks
•
Rough terrain trucks
•
Telehandlers
Road Building Vehicles
•
Pavers
•
Graders
•
Road rollers
•
Crawlers
Forestry Machinery
•
Feller bunchers
•
Forwarders
•
Harvesters
•
Log skidders
On Highway Vehicles
•
Buses
•
RV motorhomes
•
Garbage trucks
•
Sweepers
High Power Specialty Vehicles
•
Marine
•
Oil and Gas drilling/Fracking
•
Mining
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300
250
200
150
100
50
0
0 5 10 15 20 25 30 35 40 45 50
Displacement
cm3/rev
P
ressure
psi
SGM2**
SGM3**
bar
in3/rev
4000
3000
2000
1000
0
0.5
0
1.0
1.5
2.0 2.5
3.0
Technical Information
General Information

Features and Benefits

•
Two groups of frame size (Group 2 and 3)
•
Steel and cast iron rear covers for 250 bar [3626 psi] continuous performance and 270 bar [3916 psi] peak pressure for all port configurations
•
Displacement from 8 to 44 cm3/rev [from 0.51 to 2.69 in3/rev]
•
Maximum speed 3500 min-1 (rpm) for Group 2 and 2500 min-1 (rpm) for Group 3
•
Extreme temperature seals for continuous operation from –20°C [–4°F] up to 95°C [203°F], for today's more demanding applications.
•
Two electro-hydraulic proportional valve options: PRV for standard fan speed modulation and optional flat curve valves for such applications as fan motors in series.
•
DEUTSCH electrical connectors as standard to withstand dust and debris in the environment.
•
12 VDC and 24 VDC coils.
•
Fail safe function - full fan speed if electrical signal fails.
•
Pressure settings factory pre-set for individual system performance.
•
High efficiency gear motors to reduce system losses and retain useful hydraulic power work functions
•
Outrigger bearings available for all 3 models to provide increased bearing capacity and therefore more durability or extended life in applications such as slewing, tracked machines, vibe and shock load applications that possess gyroscopic and impact loads or heavy steal fan blades
•
Shaft seal dust protector standard on all models for extended seal life in fan drive applications
•
2 Anti-Cavitation High Pressure Shock Valves, to clip pressure spikes in both directions of motor rotation, while reversing, where the competition uses only 1
•
Integrated Reversing Directional Control Valves with open spool transitions to reduce system pressure spikes
•
High performance valves and the use of steel / cast iron allows for full system pressure capability without de-rating the SGM product during reversing or proportional control
•
Integrated valves packages and factory sealed outrigger bearings with high speed capability to preserve engine space
•
PLUS+1® Compliant electronic interface allows for integration with PLUS+1® micro-controllers and other compliant products including sensors and graphical displays

Quick reference chart for fan drive motors

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Vg • n
1000 •
v
Qe =
Vg • p •
mh
20 •
Me =
Qe • p •
t
600
=
Me • n
9550
Pe=
n =
Qe • 1000 •
v
V
g
Vg • n
231 •
v
Qe =
Vg • p •
mh
2 •
Me =
Vg • n • p •
t
396 000
Pe=
n =
Qe • 231 •
v
V
g
Technical Information
General Information

Determination of nominal motor size

Based on SI units Based on US units
Where:
Q
Input flow (l/min)
e
M
Output torque (N•m)
e
P
Output power (kW)
e
n Speed (min-1) V
Motor displacement per rev. (cm3/rev)
g
p
High pressure (bar)
high
p
Low pressure (bar)
low
∆p High pressure minus Low pressure (bar) η
Motor volumetric efficiency
v
η
Mechanical-hydraulic efficiency
mh
η
Motor total efficiency (ηv • ηmh)
t
Where:
Q
Input flow [US gal/min]
e
M
Output torque [lb•in]
e
P
Output power [hp]
e
n Speed [rpm] V
Motor displacement per rev. [in3/rev]
g
p
High pressure [psi]
high
p
Low pressure [psi]
low
∆p High pressure minus Low pressure [psi] η
Motor volumetric efficiency
v
η
Mechanical-hydraulic efficiency
mh
η
Motor total efficiency (ηv • ηmh)
t
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Diesel engine
Gear pump (SNP)
Microcontroller (PLUS+1TM)
Filter
T3
T2
T1
Temperature sensors
Fan drive gear motor (SGM)
Reservoir
CAN Bus
Technical Information
General Information

Fan Drive Motors Circuit Illustrations

Gear pump/gear motor with HIC electrical control
Gear pump/gear motor with electro-proportional relief valve
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Technical Information
General Information
Gear pump/gear motor with integrated reversing control valve
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Dr
P
T
Dr
Technical Information
General Information

Fan Drive Motor Hydraulic Schematics

SGM*NC Schematic
SGM*Y Schematic
SGM*VC Schematic
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Peak pressure
Rated pressure
Reaction time (100 ms max)
Time

Pressure

Technical Information

System Requirements

Pressure
Peak pressure is the highest intermittent pressure allowed at the pump's outlet. The relief valve
overshoot (reaction time) determines peak pressure. It is assumed to occur for less than 100 ms. Rated pressure is the average, regularly occurring operating inlet pressure that should yield satisfactory
product life. The maximum machine load at the motor shaft determines rated pressure. The illustration below shows peak pressure in relation to rated pressure and reaction time (100 ms
maximum).
System pressure is the differential between the inlet and outlet ports. It is a dominant operating variable affecting hydraulic unit life. High system pressure, resulting from high load at the motor shaft, reduces expected life. System pressure must remain at, or below, rated pressure during normal operation to achieve expected life.
Back pressure is the average, regularly occurring operating outlet pressure that should yield satisfactory motor life. The hydraulic load demand downstream of the motor determines the back pressure. The fan drive gear motor can work with back pressure and the maximum back pressure allowed is 60% of the maximum rated pressure.
Case drain pressure is the regularly occurring case drain line pressure that should yield satisfactory motor life. It is recommended to design the case drain piping connecting the case drain direct to the tank in order to keep the case drain pressure as low as possible. Max. continuous case drain pressure allowed is 5 bar [72.5 psi] with a peak of 7 bar [101.5 psi].
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Rated
Example of typical fan loading curve
Start-up area
P
2
P
1
Pressure
0
N

Speed

N
N
2
max
Operating envelope
1
C
Technical Information
System Requirements
Speed
Maximum speed is the limit recommended by Danfoss for a particular gear motor when operating at
rated pressure. It is the highest speed at which normal life can be expected. N2 is max. speed related to the RV valve setting ( p2) and type of fan. Minimum speed is the lowest operating speed limit at which normal life can be expected. The minimum
speed increases according to operating pressure increase. When operating at higher pressures, a higher minimum speed must be maintained, see below:
Speed versus pressure

Hydraulic Fluids

Ratings and data for SGM2, SGM3 gear motors are guaranteed when the hydraulic system operates with premium hydraulic fluids without containing oxidation, rust, or foam inhibitors.
These fluids have to work with good thermal and hydrolytic stability to prevent wear, erosion, or corrosion of internal components. They include:
•
Hydraulic fluids following DIN 51524, part 2 (HLP) and part 3 (HVLP) specifications
•
API CD engine oils conforming to SAE J183
•
M2C33F or G automatic transmission fluids
•
Certain agricultural tractor fluids
Caution
Use only clean fluid in the gear motors and hydraulic circuit. Never mix hydraulic fluids.
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Technical Information
System Requirements

Temperature and Viscosity

Temperature and viscosity requirements must be concurrently met. Use of petroleum/mineral-based fluids is highly recommended.
High temperature limits apply at the inlet port of the motors. The motors should run at or below the maximum continuous temperature.
Minimum (cold start) temperature relates to the physical properties of component materials. Maximum continuous temperature allowed at which normal life can be expected. Peak (intermittent) temperature is the overheating temperature that is tolerable by the machine for a
transient/limited time.
Cold oil, generally, doesn’t affect the durability of motors components. It may affect the ability of oil to flow and transmit power. For this reason, keep the temperature at 16°C [60 °F] above the pour point of the hydraulic fluid.
Temperature limits
Minimum (cold start) Maximum continuous Peak (intermittent)
-20°C [-4°F] 95°C [203°F] 110°C [230°F]
Minimum viscosity occurs only during brief occasions of maximum ambient temperature and severe duty cycle operation. It’s the minimum acceptable viscosity to allow normal motor life.
Maximum viscosity occurs only during cold start at very low ambient temperatures. It’s the upper limit of viscosity that allows the motor to start.
•
Size heat exchangers to keep the fluid within these limits
•
Test regularly to verify that these temperatures and viscosity limits aren’t exceeded
•
Keep the fluid viscosity in the recommended viscosity range for maximum unit efficiency and bearing life
Fluid viscosity limits, in mm2/s [SUS]
Maximum (cold start) Recommended range Range for high efficiency Minimum
1600 [7273] 12-100 [66-456] 20-50 [97-231] 10 [60]
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Technical Information
System Requirements

Filtration

Filters

Use a filter that conforms to Class 22/18/13 of ISO 4406 (or better). It may be on the motor outlet (discharge filtration) or inlet (pressure filtration).

Selecting a filter

When selecting a filter, please consider:
•
Contaminant ingression rate (determined by factors such as the number of actuators used in the system)
•
Generation of contaminants in the system
•
Required fluid cleanliness
•
Desired maintenance interval
•
Filtration requirements of other system components
Measure filter efficiency with a Beta ratio (βX). βx ratio is a measure of filter efficiency defined by ISO 4572. It is the ratio of the number of particles greater than a given diameter (in microns) upstream of the filter to the number of these particles downstream of the filter.
•
For discharge filtration with controlled reservoir ingression, use a β
•
For pressure filtration, use a filtration with an efficiency of β10 = 75
35-45
= 75 filter
The filtration requirements for each system are unique. Evaluate filtration system capacity by monitoring and testing prototypes.
Fluid cleanliness level and βX ratio
Fluid cleanliness level (per ISO 4406) βX ratio (discharge filtration) βX ratio (pressure or return filtration) Recommended inlet screen size

Reservoir

The reservoir provides clean fluid, dissipates heat, removes entrained air, and allows fluid volume changes associated with fluid expansion and cylinder differential volumes. A correctly sized reservoir accommodates maximum volume changes during all system operating modes. It promotes de-aeration of the fluid as it passes through, and accommodates a fluid dwell-time between 60 and 180 seconds, allowing entrained air to escape.
Minimum reservoir capacity depends on the volume required to cool and hold the oil from all retracted cylinders, allowing for expansion due to temperature changes. A fluid volume of 1 to 3 times the pump output flow (per minute) is satisfactory. The minimum reservoir capacity is 125% of the fluid volume.
Install the suction line above the bottom of the reservoir to take advantage of gravity separation and prevent large foreign particles from entering the line. Cover the line with a 100-125 micron screen. The pump should be below the lowest expected fluid level.
Put the return-line below the lowest expected fluid level to allow discharge into the reservoir for maximum dwell and efficient deaeration. A baffle (or baffles) between the return and suction lines promotes deaeration and reduces fluid surges.
Class 22/18/13 or better
β
= 75 and β10 = 2
35-45
β10 = 75
100 – 125 μm [0.004 – 0.005 in]
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Technical Information
System Requirements

Line sizing

Choose pipe sizes that accommodate minimum fluid velocity to reduce system noise, pressure drops and overheating in order to maximize system life and performance. Line velocity should not exceed 5.0 m/s [16.4 ft/s].
Most systems use hydraulic oil containing 10% dissolved air by volume. Over-aeration, or entrained air, is the result of flow line restrictions, where the dissolved air comes out of solution, or when air is allowed to leak into the hydraulic circuit. These include inadequate pipe sizes, sharp bends, or elbow fittings, causing a reduction of flow-line cross-sectional area. This problem will not occur if these circuit recommendations are followed, rated speed requirements are maintained, and reservoir size and location are adequate.

Motor Shaft Connection

Allowable radial shaft loads are a function of the load position, load orientation, and operating pressure of the hydraulic motor. All external shaft loads have an effect on bearing life, and may affect motor performance.
Shaft options for fan drive gear motors include tapered (1:5 and 1:8) and parallel. In applications where the external shaft loads cannot be avoided, minimize the impact on the motor by
optimizing the orientation and the magnitude of the load. Danfoss fan drive gear motors are capable of carryng most manufaturer's plastic fans up to 7.27 kg (16 lb) fan blades for the Group 2 and 11.75 kg (26 lb) fan blades for the Group 3.
For fan drives exceeding these loads, with presence of shock loads, or for slewing (swing) and oscilating applications such as excavators, wheel loaders, harvesters, and windrowers, please consult your Danfoss technical representative for the potential usage of an outrigger bearing.

Motor Life

Motor life is a function of speed, system pressure, and other system parameters (such as fluid quality and cleanliness).
All Danfoss gear motors use hydrodynamic journal bearings that have an oil film maintained between the gear/shaft and bearing surfaces at all times. If the oil film is sufficiently sustained through proper system maintenance and operating within recommended limits, long life can be expected.
High pressure impacts motor life. When submitting an application for review, provide machine duty cycle data that includes percentages of time at various loads and speeds.
B10 life expectancy number is generally associated with rolling element bearings. It does not exist for hydrodynamic bearings.
Danfoss strongly recommends a prototype testing program to verify operating parameters and their impact on life expectancy before finalizing any system design.
16 | © Danfoss | December 2020 BC318050073602en-000102
G H
J
M N O
/
DC E FA B I K L
/
Technical Information

Group 2

Model Code for Group 2 Fan Drive Motors

A – Family
SGM2NC SGM2GC SGM2YN SGM2YL SGM2VC
B – Frame size and displacement
8,0 011 014 017 019 022 025
Fan Drive Bi-directional Motor; External Axial Drain
Fan Drive Uni-directional Motor; Anti-cavitation Check valve
Fan Drive Motor with Proportional Pressure Valve, Axial Drain
Fan Drive Motor with Proportional Pressure Valve, Radial Drain
Reversible Fan Drive Motor with Proportional Pressure Valve
3
8.4 cm
3
10.8 cm
3
14.4 cm
3
16.8 cm
3
19.2 cm
3
22.8 cm
3
25.2 cm
C – Direction of rotation
B L R
Bi-directional (SGM2NC) or Uni-directional (SGM2GC)
Left hand (Counter-clockwise)
Right hand (Clockwise)
D – Project version
A
High temperature sealing, dust protector, rust protected screws
E – Mounting flange
01 02 06 9Y
European 01: Pilot Ø36.5 mm; 4 holes, special for fan drive (without dust protector)
European 02: Pilot Ø80 mm; 4 holes
SAE A pilot Ø82.55 mm; 2 holes
SAE A pilot Ø82.55 mm; 2 holes; outrigger bearing with dust cover
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/
/
G H
J
M N ODC E FA B I K L
Technical Information
Group 2
Model Code for Group 2 Fan Drive Motors
F – Drive gear
AA BA FA GB
For more details about configuration, see Model Code for Mounting Flange/Drive Gears (Group 2) on page 21.
G – Rear cover
C5 CX CZ Y6 Y4 YX RA
RB
Taper 1:5; M12x1.25 with Key 3
Taper 1:8; M12x1.25 with Key 4
Parallel Ø15 x 36,5 mm; with Key 4x25
Parallel SAE Ø15.875 x 50.8 mm; with Key 4x40
Cast Iron cover: 7/8–14 UNF–2B; In/Out Ports: 9/16–18 UNF–2B Axial Drain (idler gear side)
Cast Iron cover: 7/8–14 UNF–2B; In/Out Ports: 9/16–18 UNF–2B Radial Drain (idler gear side)
Cast Iron cover: 7/8–14 UNF–2B; In/Out Ports: 9/16–18 UNF–2B Radial Drain (shaft side)
Cast Iron cover: 7/8–14 UNF–2B; In Port: 9/16–18 UNF–2B Axial Drain (idler gear side)
Cast Iron cover: 7/8–14 UNF–2B; In Port: 9/16–18 UNF–2B Radial Drain (idler gear side)
Cast Iron cover: 7/8–14 UNF–2B; In Port: 9/16–18 UNF–2B Radial Drain (shaft side)
Proportional PRV Reversing Valve Cover, 12 VDC V03 DEUTSCH connector, Anti-Shock-MakeUp Valve, 7/8– 14 UNF Work Ports, 9/16–18 UNF Radial Drain Port
Proportional PRV Reversing Valve Cover, 24 VDC V03 DEUTSCH connector, Anti-Shock-MakeUp Valve, 7/8– 14 UNF Work Ports, 9/16–18 UNF Radial Drain Port
H – Inlet ports
NN
Without inlet on body
I – Outlet ports
Code Dimensions Ports Code Thread Dimensions
B5 15x35xM6
B6 15x40xM6
B7 20x40xM6
NN Without outlet on body
D7 D9 E5 E6 F4 F5 H5 H7 H8
M22x1.5 M26x1.5 7/8-14UNF 11/16-12UN 1/2 Gas 3/4 Gas M18 x 1.5 per ISO6149 M22 x 1.5 per ISO6149 M27 x 2 per ISO6149
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J
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DC E FA B I K L
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Technical Information
Group 2
Model Code for Group 2 Fan Drive Motors
J – Ports positions and special body
NN
K – Seals
N W
L – Screws
N
M – Valve setting
NNN XNN
***
*
For more details see Model Code for Integral Relief Valve Pressure Setting on page 20.
Standard from catalogue
Standard seals for high temperature (11172969)
Standard seals for high temperature without dust cover
Rust protected screws
No valve
Integral relief valve pressure setting
*
N – Type marking
N A Z *
Standard Danfoss marking
Standard Danfoss marking + Customer code
No marking
Special customer marking
O – Marking position
N A
Standard marking on the top
Special marking position at the bottom
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D
Pressure
50
I
Y W U
S Q
O M
0
l/min80604020
0
0
20
0 8 16124
US gal/min
F
Bypass flow
300
barpsi
200
150
250
100
0
1000
2000
3000
4000
Technical Information
Group 2

Model Code for Integral Relief Valve Pressure Setting

M – Valve setting
XNN XA* XB* X**
No valve Standard relief valve with coil voltage 12 VDC, DT connector Standard relief valve with coil voltage 24 VDC, DT connector
X*F Three color curves represent three types of valves. Each valve is characterized by different X*I
nominal spring ranges. Select requirements using the graph Pressure vs. Bypass flow below:
X*M X*O
X*Q X*S X*U X*W X*Y
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C
Technical Information
Group 2

Model Code for Mounting Flange/Drive Gears (Group 2)

Danfoss offers two types of industry standard mounting flange:
•
02 European, Pilot Ø80 mm; 4 holes
•
06 SAE A pilot Ø82.55 mm; 2 holes
Spline configuration is not available for fan drive motors. Other shaft options may exist. Contact your Danfoss representative for availability. The table below shows order codes for each available mounting flange and shaft:
Model code sections: E and F
Mounting flange/Drive gear availability with max. torque
Mounting Flange Drive Gear
Code E Description Code F Description Maximum torque
01
European,
Pilot Ø 36.5 mm; 4 holes
Special for fan drive
BA Taper 1:8; M12x1.25 with Key 4 150 N•m
[1328 lbf•in]
FA Parallel Ø15 mm; 36.5 mm long 90 N•m
02
06 SAE A pilot Ø82.55 mm; 2 holes BA Taper 1:8; M12x1.25 with Key 4 150 N•m [1328
9Y Outrigger Bearing with dust cover
SAE A pilot Ø82.55 mm; 2 holes
European
Pilot Ø80 mm; 4 holes
AA Taper 1:5; M12x1.25 with Key 3 140 N•m
GB Parallel Ø15.875 mm; 50.8 mm
long
DB Taper 1:8; M12x1.25 with Key 4 130 N•m
[797 lbf•in]
[1239 lbf•in]
lbf•in]
80 N•m
[708 lbf•in]
[1151 lbf•in]
Caution
Shaft torque capability may limit allowable pressure. Torque ratings assume no external radial loading. Applied torque must not exceed these limits, regardless of stated pressure parameters. Maximum torque ratings are based on shaft torsional fatigue strength.
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Technical Information

SGM2NC Fan Drive Motors (Group 2)

SGM2NC is Group 2 bidirectional fan drive motor with inlet/outlet on cast iron rear cover and axial drain line, PLUS+1 compliant.
Group 2 fan drive motors are available in displacements from 8.4 cm3/rev [0.51 in3/rev]to 25 cm3/rev [1.54 in3/rev].
Configurations include European and SAE flanges; taper 1:8, 1:5, and straight shafts Ø15.875 mm [0.62 in]. Outrigger bearing available as SAE A flange with taper shaft 1:8 and European flange with taper shaft 1:5.

SGM2NC Technical Data

Units Frame size
8.0 011 014 017 019 022 025
Displacement
Peak pressure bar [psi] 270 [3916] 270 [3916] 270 [3916] 250 [3626] 230 [3336] 200 [2900] 180 [2610] Rated pressure 250 [3626] 250 [3626] 250 [3626] 230 [3336] 210 [3046] 180 [2610] 160 [2320] Back pressure 250 [3626] 250 [3626] 250 [3626] 230 [3336] 210 [3046] 180 [2610] 160 [2320] Maximum speed
Minimum speed 700 700 700 500 500 500 500 Weight
Moment of inertia of rotating components
cm3/rev
[in3/rev]
min-1 [rpm]
kg [lb]
x 10-6 kg•m
[x 10-6 lbf•ft2]
8.4 [0.51] 10.8 [0.66] 14.4 [0.88] 16.8 [1.03] 19.2 [1.17] 22.8 [1.39] 25.2 [1.54]
3500 3500 3500 3500 3200 3200 3200
3.2 [7.05] 3.75 [8.26] 3.9 [8.60] 4.05 [8.93] 4.15 [9.15] 4.3 [9.48] 4.4 [9.70]
2
32.4 [796] 38.4 [911] 47.3 [1122] 53.3 [1265] 59.2 [1405] 68.1 [1616] 74.1 [1758]

SGM2NC Model Code Examples

Model code examples with maximum shaft torque
Flange/shaft Model code example Maximum shaft torque 02AA SGM2NC/011BA02AAC5NNNNNNNN/NNNNN 140 N•m [1239 lb•in]
06BA SGM2NC/011BA06BAC5NNNNNNNN/NNNNN 150 N•m [1328 lb•in] 06GB SGM2NC/011BA06GBC5NNNNNNNN/NNNNN 80 N•m [708 lb•in]
For further details on ordering, see Model Code for Group 2 Fan Drive Motors on page 17.
22 | © Danfoss | December 2020 BC318050073602en-000102
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