Group 1
Gear Pumps
Technical
Information
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
2
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Table of revisions
Date Page Changed Rev.
24, June 2010 - First edition A
Literature reference for gear products
Title Type Order number
General Aluminum Gear Pumps and Motors Technical Information L1016238
Group 2 Gear Pumps Technical Information L1016341
Group 3 Gear Pumps Technical Information L1016456
Group 1, 2 and 3 Gear Motors Technical Information L1016082
Hydraulic Fluids and Lubricants Technical Information L1021414
Experience with Biodegradable Hydraulic Fluids Technical Information L1021903
History of revisions
Reference documents
General Information
© 2010 Turolla OpenCircuitGear™. All rights reserved.
Turolla OCG accepts no responsibility for possible errors in catalogs, brochures and other printed material. Turolla OCG reserves
the right to alter its products without prior notice. This also applies to products already ordered provided that such alterations
can be made without affecting agreed speci cations. All trademarks in this material are properties of their respective owners.
Sauer-Danfoss, Turolla, Turolla OpenCircuitGear, Turolla OCG, OpenCircuitGear, Fast Lane and PLUS+1 are trademarks of the
Sauer-Danfoss Group.
Overview The Turolla OCG Group 1 is a range of peak performance fixed-displacement gear pumps.
Constructed of a high-strength extruded aluminum body with aluminum cover and
flange, all pumps are pressure-balanced for exceptional efficiency. The flexibility of the
range, combined with high efficiency and low noise, makes the pumps in this series ideal
for a wide range of applications, including: turf care, aerial lifts, material handling, and
power packs.
SNP1NN 01BA SKP1NN 06SA SNP1NN 03CA
Gear pump attributes:
Up to 11 displacements from 1.2 to 12 cm•
3
/rev [from 0.072 to 0.732 in
3
/rev]
Continuous pressure rating up to 250 bar [3625 psi]•
Speeds up to 4000 min•
-1
(rpm)
SAE, ISO, and DIN mounting flanges and shafts•
Compact, lightweight, quiet operation•
Available as unidirectional and bi-directional motors, also with integral relief valve•
You can combine groups 1, 2 and 3 to make multi-stage pumps•
Features and benets
3
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Contents
General Information
Product Coding
Determination of
Nominal Pump Sizes
System Requirements
Pump Performance
Product Options
Dimensions
Pump design .................................................................................................................................................... 4
Pump displacements ....................................................................................................................................4
SEP1NN ......................................................................................................................................................... 4
SNP1NN ........................................................................................................................................................4
SKP1NN .........................................................................................................................................................4
SNP1IN ..........................................................................................................................................................4
Technical data .................................................................................................................................................. 5
Model code ....................................................................................................................................................... 6
Determination of nominal pump sizes ...................................................................................................8
Pressure ..............................................................................................................................................................9
Speed ..................................................................................................................................................................9
Hydraulic uids .............................................................................................................................................10
Temperature and .........................................................................................................................................10
viscosity ...........................................................................................................................................................10
Filtration...........................................................................................................................................................11
Reservoir ..........................................................................................................................................................11
Filters ...........................................................................................................................................................11
Selecting a lter .......................................................................................................................................11
Line sizing .......................................................................................................................................................12
Pump drive .....................................................................................................................................................12
Pump drive data form .................................................................................................................................13
Pump life..........................................................................................................................................................14
Sound levels ...................................................................................................................................................14
Pump performance graphs .......................................................................................................................15
Flange, shaft and port congurations ..................................................................................................18
Mounting anges .........................................................................................................................................19
Shaft options ..................................................................................................................................................19
Inlet/Outlet port congurations .............................................................................................................20
Ports ..................................................................................................................................................................21
Integral relief valve ......................................................................................................................................22
Integral relief valve covers SNP1IN ........................................................................................................22
Variant codes for ordering integral relief valves ...............................................................................23
Integral relief valve schematic .................................................................................................................23
SNP1NN – 01BA and 01DA ........................................................................................................................24
SKP1NN – 02BB and 02FA ..........................................................................................................................25
SNP1NN, SEP1NN – 03CA ..........................................................................................................................26
SKP1NN – 06GA and 06SA .........................................................................................................................27
4
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
General Information
Pump design SEP1NN
SEP1NN is available in a limited displacement range. In addition to European flange
and shaft configurations (code 01DA, 01BA, and 03CA), the range includes special
shafts and flanges for power pack applications. SEP1NN has a lower pressure rating than
SNP1NN and SKP1NN.
SNP1NN 01BA (cut away)SNP1NN
SNP1NN is available in a limited displa-
cement range but with higher-pressure
ratings than the SEP1NN. This is because
of DU bushings used in its design.
SNP1NN pumps only include European
flange and shaft configurations (code
01BA, 01DA, and 03CA).
SKP1NN
SKP1NN has a larger diameter shaft than either the SEP1NN or SNP2. It spans the
complete displacement range at higher pressures than the SEP1NN and SNP1NN.
Configurations include European and SAE flanges and shafts (code 02BB, 02FA, 06SA,
and 06GA).
SNP1IN
Turolla OCG offers an optional integral
relief valve integrated in the rear cover.
It is drained internally and directs all
flow from the pump outlet to the inlet
when the outlet pressure reaches the
valve setting. SNI1 pumps only include
European flange and shaft configurations
(code 01BA, 01DA, and 03CA).
SNP1IN 03CA (cut away)
Pump displacements Quick reference chart for pump displacements vs. rated pressure
Displacement (cm
3
/rev)
Rated pressure (bar)
200
150
100
50
0
250{
0 1 2 3 4 5 6 7 8 9 10 11 12
SNP1NN
SKP1NN
SEP1NN
5
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
General Information
Technical data
1kg•m
2
=23.68lb•ft
2
Specications for the SNP1NN, SEP1NN and SKP1NN Group 1 gear pumps.
Frame size
1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8 010 012
Displacement
cm
3
/rev
[in
3
/rev]
1.18
[0.072]
1.57
[0.096]
2.09
[0.128]
2.62
[0.160]
3.14
[0.192]
3.66
[0.223]
4.19
[0.256]
5.89
[0.359]
7.59
[0.463]
9.94
[0.607]
12.00
[0.732]
SNP1NN
– –
Peak pressure
bar [psi]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
210
[3045]
170
[2465]
Rated pressure
250
[3625]
250
[3625]
250
[3625]
250
[3625]
250
[3625]
250
[3625]
250
[3625]
190
[2760]
150
[2175]
Minimum speed
at 0-150 bar
min
-1
(rpm)
800 800 600 600 600 600 500 500 500
Min. speed at 150 bar
to rated pressure
1200 1200 1000 1000 1000 1000 800 800 800
Maximum speed 4000 4000 4000 4000 4000 4000 3000 3000 3000
SEP1NN
Peak pressure
bar [psi]
230
[3335]
230
[3335]
230
[3335]
230
[3335]
230
[3335]
230
[3335]
230
[3335]
190
[2760]
160
[2320]
Rated pressure
210
[3045]
210
[3045]
210
[3045]
210
[3045]
210
[3045]
210
[3045]
210
[3045]
170
[2465]
140
[2030]
Minimum speed
at 0-150 bar
min
-1
(rpm)
800 800 600 600 600 600 500 500 500
Min. speed at 150 bar
to rated pressure
1200 1200 1000 1000 1000 1000 800 800 800
Maximum speed 4000 4000 4000 4000 4000 4000 3000 3000 3000
SKP1NN*
Peak pressure
bar [psi]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
270
[3915]
250
[3625]
220
[3190]
170
[2465]
140
[2030]
Rated pressure
250
[3625]
250
[3625]
250
[3625]
250
[3625]
250
[3625]
250
[3625]
250
[3625]
230
[3335]
200
[2900]
150
[2175]
120
[1740]
Minimum speed
at 0-150 bar
min
-1
(rpm)
800 800 800 800 800 800 600 600 600 600 600
Min. speed at 150 bar
to rated pressure
1200 1200 1000 1000 1000 1000 1000 800 800 800 –
Maximum speed 4000 4000 4000 4000 4000 4000 3000 3000 3000
2000 2000
All (SNP1NN, SEP1NN, SKP1NN)
Weight kg [lb]
1.02
[2.26]
1.05
[2.31]
1.09
[2.40]
1.11
[2.45]
1.14
[2.51]
1.18
[2.60]
1.20
[2.65]
1.30
[2.87]
1.39
[3.06]
1.55
[3.42]
1.65
[3.64]
Moment of inertia of
rotating components
x 10
-6
kg•m
2
[x 10
-6
lb•ft
2
]
3.2
[77]
3.7
[89]
4.4
[105]
5.1
[120]
5.7
[136]
6.4
[152]
7.1
[168]
9.3
[220]
11.4
[271]
14.6
[347]
17.1
[407]
Theoretical flow at
maximum speed
l/min
[US gal/min]
4.72
[1.25]
6.28
[1.66]
8.36
[2.21]
10.48
[2.77]
12.56
[3.32]
14.64
[3.87]
12.57
[3.32]
17.67
[4.67]
22.77
[6.02]
19.88
[5.25]
24
[6.34]
* SKP1NN is a special version of the SNP1NN. It is designed to accommodate an SAE 9T 20/40 DP tooth
splined shaft for higher torque applications.
C Caution
The rated and peak pressure mentioned are for pumps with anged ports only. When threaded ports
are required a de-rated performance has to be considered. To verify the compliance of an high pres-
sure application with a threaded ports pump apply to a Turolla OCG representative.
6
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Product Coding
Model code
A B C D E F G H I J K L M N
/ /
A Type
SEP1NN
Medium pressure gear pump
SNP1NN
Standard gear pump
SKP1NN
High torque gear pump
SNP1IN
Standard gear pump, integrated RV
SKP1IN
High torque gear pump, integrated RV
B Displacement
1,2
1.18 cm
3
/rev [0.072 in
3
/rev]
1,7
1.57 cm
3
/rev [0.096 in
3
/rev]
2,2
2.09 cm
3
/rev [0.128 in
3
/rev]
2,6
2.62 cm
3
/rev [0.160 in
3
/rev]
3,2
3.14 cm
3
/rev [0.192 in
3
/rev]
3,8
3.66 cm
3
/rev [0.223 in
3
/rev]
4,3
4.19 cm
3
/rev [0.256 in
3
/rev]
6,0
5.89 cm
3
/rev [0.359 in
3
/rev]
7,8
7.59 cm
3
/rev [0.463 in
3
/rev]
010
9.40 cm
3
/rev [0.607 in
3
/rev]
012
12.0 cm
3
/rev [0.732 in
3
/rev]
C Sense of rotation
R
Right (Clockwise)
L
Left (Counterclockwise)
D Version
N
Standard gear pump
E Mounting ange/drive gear
Code
Description
(Typeofange•typeofdrivegear•preferedportsfor
configuration)
SNP1NN
SKP1NN
SEP1NN
SNP1IN
01BA
Europeanfourboltange•Tapered1:8shaft•Europeanangedports
–
01DA
Europeanfourboltange•Splined15T12x10shaft•Europeanangedports
– –
02BB
Europeanfourboltsange•Tapered1:8shaft•Europeanangedports –
– –
02FA
Europeanfourboltsange•Parallelshaft•Europeanangedports –
– –
03CA
GermantwoboltsPTOange•SDTangshaft•Metricalthreadedports
–
06GA
SAEA-Aange•Parallelshaft•SAEO-Ringbossports –
– –
06SA
SAEA-Aange•SAEsplineshaft•SAEO-Ringbossports –
– –
F Rear cover
P1
Standard cover for pump
03
Cover for 03 flange
I1
Cover for pump with relief valve
I3
Cover for 03 flange with relief valve
7
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Model code
(continued)
Product Coding
A B C D E F G H I J K L M N
/ /
G Inlet port/H Outlet port*
B1
8x30xM6
Flanged port with threaded holes in X pattern,
in center of body
B2
13x30xM6
C1
8x26xM5
Flanged port with threaded holes in + pattern
(European standard ports)
C2
12x26xM5
C3
13,5x30xM6
D3
M14x1,5
Threaded metric port
D5
M18x1,5
D7
M22x1,5
E3
-18UNF
Threaded SAE, O-Ring boss port
E4
¾ -16UNF
E5
-14UNF
F2
¼ GAS Threaded GAS (BSPP) port
F3
 GAS
F4
½ GAS
H5
M18x1,5 Threaded metric port ISO 6149
H7
M22x1,5
* For the information see Port dimensions, page 21.
I Port position and variant body
NN
Standard gear pump from catalogue
J Sealing
N Standard Buna seal
A Without shaft seal
B VITON seals
K Screws
N Standard screws
A Galvanized screws+nuts-washers
B DACROMET/GEOMET screws
L Set valve
NNN No valve
V** Integral RV-Pressure setting. Pump speed for relief valve setting (min
-1
[rpm])
M Marking
N
Standard marking
A Standard marking + Customer Code
Z Without marking
N Mark position
N Standard marking position
A Mark on the bottom ref. to drive gear
8
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Determination of Nominal Pump Sizes
Use these formulae to determine the nominal pump size for a specific application:
Based on SI units Based on US units
Vg•n•η
v
Q
= l/min
1000
Vg•∆p
M =  N•m
20•π•η
m
M•n Q•∆p
P = = kW
9550 600•η
t
SI units [US units]
V
g
= Displacement per rev. cm
3
/rev [in
3
/rev]
p
HD
= Outlet pressure bar [psi]
p
ND
= Inlet pressure bar [psi]
∆p = p
HD
– p
ND
bar [psi]
n = Speed min
-1
(rpm)
η
v
= Volumetric efficiency
η
m
= Mechanical (torque) efficiency
η
t
= Overall efficiency (η
v
•η
m
)
Vg•n•η
v
Q
= [US gal/min]
231
Vg•∆p
M = [lbf•in]
2•π•η
m
M•n Q•∆p
P = = [hp]
63.025 1714•η
t
Output ow:
Input torque:
Input power:
Variables:
Determination of
nominal pump sizes
9
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Pressure
Speed
System Requirements
The inlet vacuum must be controlled in order to realize expected pump life and
performance. The system design must meet inlet pressure requirements during all
modes of operation. Expect lower inlet pressures during cold start. It should improve
quickly as the fluid warms.
Inlet pressure
Maximum continuous vacuum
bar absolute
[in. Hg]
0.8 [23.6]
Maximum intermittent vacuum
0.6 [17.7]
Maximum pressure
3.0 [88.5]
Peak pressure is the highest intermittent pressure allowed. The relief valve overshoot
(reaction time) determines peak pressure. It is assumed to occur for less than 100 ms.
The illustration to the right shows peak pressure in relation to rated pressure and
reaction time (100 ms maximum).
Maximum speed is the limit
recommended by Turolla OCG for a
particular gear pump when operating at
rated pressure. It is the highest speed at
which normal life can be expected.
The lower limit of operating speed is the
minimum speed. It is the lowest speed
at which normal life can be expected. The
minimum speed increases as operating
pressure increases. When operating
under higher pressures, a higher
minimum speed must be maintained, as
illustrated to the right.
Rated pressure is the average, regularly
occurring, operating pressure that
should yield satisfactory product life.
The maximum machine load demand
determines rated pressure. For all
systems, the load should move below
this pressure.
System pressure is the differential
between the outlet and inlet ports.
It is a dominant operating variable
affecting hydraulic unit life. High system
pressure, resulting from high load,
reduces expected life. System pressure
must remain at, or below, rated pressure
during normal operation to achieve
expected life.
Time versus pressure
Speed versus pressure
Pressure
0
Speed
Max
Operating
Envelope
N
1
0
N
2
N
3
P
1
P
2
Rated pressure
Where:
N
1
= Minimum speed at 100 bar
N
2
= Minimum speed at 180 bar
N
3
= Minimum speed at rated pressure
Peak pressure
Rated pressure
Reaction time (100 ms max)
Time
Pressure
10
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Temperature and viscosity requirements must be concurrently satisfied. Use
petroleum / mineral-based fluids.
High temperature limits apply at the inlet port to the pump. The pump should run at
or below the maximum continuous temperature. The peak temperature is based on
material properties. Don’t exceed it.
Cold oil, generally, doesn’t affect the durability of pump 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.
Minimum (cold start) temperature relates to the physical properties of component
materials.
Minimum viscosity occurs only during brief occasions of maximum ambient temperature
and severe duty cycle operation. You will encounter maximum viscosity only at cold start.
During this condition, limit speeds until the system warms up. Size heat exchangers to
keep the fluid within these limits. Test regularly to verify that these temperatures and
viscosity limits aren’t exceeded. For maximum unit efficiency and bearing life, keep the
fluid viscosity in the recommended viscosity range.
System Requirements
Hydraulic uids
Temperature and
viscosity
Temperature
Minimum (cold start)
°C
[°F]
-20 [-4]
Maximum continuous
80 [176]
Peak (intermittent)
90 [194]
Fluid viscosity
Maximum (cold start)
mm
2
/s
[SUS]
1000 [4600]
Recommended range
12-60 [66-290]
Minimum
10 [60]
Ratings and data for SNP1NN, SEP1NN and SKP1NN gear pumps are based on operating
with premium hydraulic fluids containing oxidation, rust, and foam inhibitors. These
fluids must possess good thermal and hydrolytic stability to prevent wear, erosion, and
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•
Use only clean fluid in the pump and hydraulic circuit.
CCaution
Never mix hydraulic uids.
Please see Turolla OCG publication Hydraulic Fluids and Lubricants Technical
Information, L1021414 for more information. Refer to publication Experience with
Biodegradable Hydraulic Fluids Technical Information, L1021903 for information
relating to biodegradable fluids.
11
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Filters
Use a filter that conforms to Class 22/18/13 of ISO 4406 (or better). It may be on the
pump outlet (pressure filtration), inlet (suction filtration), or reservoir return (return-line
filtration).
Selecting a lter
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 (β
x
). For:
suction filtration, with controlled reservoir ingression, use a • β
35-45
= 75 filter
return or pressure filtration, use a pressure filtration with an efficiency of • β
10
= 75.
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 (“
x
” in microns) upstream of the filter to the number of these particles downstream of the
filter.
Fluid cleanliness level and β
x
ratio
Fluid cleanliness level (per ISO 4406)
Class 22/18/13 or better
β
x
ratio (suction filtration)
β
35-45
= 75 and β
10
= 2
β
x
ratio (pressure or return filtration)
β
10
= 75
Recommended inlet screen size
100-125 µm [0.004-0.005 in]
The filtration requirements for each system are unique. Evaluate filtration system
capacity by monitoring and testing prototypes.
The reservoir provides clean fluid, dissipates heat, removes entrained air, and allows
for 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 deaeration 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.
Reservoir
Filtration
System Requirements
12
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
System Requirements
Line sizing
Pump drive
Pilot cavity
Ø 0.1 [0.004]
P101 002E
Mating spline
Plug-in drives, acceptable only with a
splined shaft, can impose severe radial
loads when the mating spline is rigidly
supported. Increasing spline clearance
does not alleviate this condition.
Use plug-in drives if the concentricity
between the mating spline and pilot
diameter is within 0.1 mm [0.004 in].
Lubricate the drive by flooding it with oil.
A 3-piece coupling minimizes radial or
thrust shaft loads.
Choose pipe sizes that accommodate minimum fluid velocity to reduce system noise,
pressure drops, and overheating. This maximizes system life and performance. Design
inlet piping that maintains continuous pump inlet pressure above 0.8 bar absolute
during normal operation. The line velocity should not exceed the values in this table:
Maximum line velocity
Inlet
m/s [ft/sec]
2.5 [8.2]
Outlet
5.0 [16.4]
Return
3.0 [9.8]
Most systems use hydraulic oil containing 10% dissolved air by volume. Under high inlet
vacuum conditions the oil releases bubbles. They collapse when subjected to pressure,
resulting in cavitation, causing adjacent metal surfaces to erode. Over-aeration is the
result of air leaks on the inlet side of the pump, and flow-line restrictions. 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 inlet vacuum and rated speed
requirements are maintained, and reservoir size and location are adequate.
Shaft options for Group 1 gear pumps include tapered, tang, splined, or parallel shafts.
They are suitable for a wide range of direct and indirect drive applications for radial and
thrust loads.
CCaution
In order to avoid spline shaft damages it is recommended to use carburised
and hardened steel couplings with 80-82 HRA surface hardness.
Allowable radial shaft loads are a function of the load position, load orientation, and
operating pressure of the hydraulic pump. All external shaft loads have an effect on
bearing life, and may affect pump performance.
In applications where external shaft loads can’t be avoided, minimize the impact on the
pump by optimizing the orientation and magnitude of the load. Use a tapered input
shaft; don’t use splined shafts for belt or gear drive applications. A spring-loaded belt
tension-device is recommended for belt drive applications to avoid excessive tension.
Avoid thrust loads in either direction. Contact Turolla OCG if continuously applied
external radial or thrust loads occur.
13
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
90
o
α
a
0
o
270
o
180
o
0
o
Inlet port
Inlet port
a
dw
270
o
180
o
90
o
dw
a
P
Application data
Item Value Unit
Pump displacement cm
3
/rev [in
3
/rev]
Rated system pressure
bar psi
Relief valve setting
Pump shaft rotation
left right
Pump minimum speed
min
-1
(rpm)
Pump maximum speed
Drive gear helix angle (gear drive only) degree
Belt type (gear drive only)
V notch
Belt tension (gear drive only) P
N lbf
Angular orientation of gear or belt to inlet port
α
degree
Pitch diameter of gear or pulley
d
w
mm in
Distance from flange to center of gear or pulley
a
System Requirements
Photocopy this page and fax the complete form to your Turolla OCG representative for
an assistance in applying pumps with belt or gear drive. This illustration shows a pump
with counterclockwise orientation:
Optimal radial load position
Pump drive data form
14
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
System Requirements
Pump life is a function of speed, system pressure, and other system parameters (such as
fluid quality and cleanliness).
All Turolla OCG gear pumps 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.
B
10
life expectancy number is generally associated with rolling element
bearings. It does not exist for hydrodynamic bearings.
High pressure, resulting from high loads, impacts pump life. When submitting an
application for review, provide machine duty cycle data that includes percentages of
time at various loads and speeds. We strongly recommend a prototype testing program
to verify operating parameters and their impact on life expectancy before finalizing any
system design.
Noise is unwanted sound. Fluid power systems create noise. There are many techniques
available to minimize noise. Understanding how it’s generated and transmitted is
necessary to apply these methods effectively.
Noise energy is transmitted as fluid borne noise (pressure ripple) or structure borne
noise. Pressure ripple is the result of the number of pumping elements (gear teeth)
delivering oil to the outlet and the pump’s ability to gradually change the volume of
each pumping element from low to high pressure. Pressure ripple is affected by the
comressibility of the oil as each pumping element discharges into the outlet of the
pump. Pressure pulsations travel along hydraulic lines at the speed of sound (about
1400 m/s in oil) until there is a change in the system (as with an elbow fitting). Thus, the
pressure pulsation amplitude varies with overall line length and position.
Structure borne noise may be transmitted wherever the pump casing is connected to
the rest of the system.
The way circuit components respond to excitation depends on their size, form, and
mounting. Because of this, a system line may actually have a greater noise level than the
pump. To minimize noise, use:
flexible hoses (if you must use steel plumbing, clamp the lines).•
flexible (rubber) mounts to minimize other structure borne noise.•
Pump life
Sound levels
15
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Pump Performance
The graphs on the next few pages provide typical output flow and input power for
Group 1 pumps at various working pressures. Data were taken using ISO VG46 petroleum
/mineral based fluid at 50°C (viscosity at 28 mm
2
/s [cSt]).
Flow l/min
Power kW
0
Speed min
-1
(rpm)
5
4
3
2
1
0
3
2
1
7 bar
250 bar
150 bar
100 bar
250 bar
[1.2]
[1.0]
[0.8]
[0.6]
[0.4]
[0.2]
Flow [US gal/min]
[4]
[3]
[2]
[1]
[0]
Power [HP]
only SNP1NN
and SKP1NN
SEP1NN/1,2
SNP1NN/1,2
SKP1NN/1,2
1000 2000 3000 4000
7
6
5
4
3
2
1
0
4
3
2
1
0
7 bar
250 bar
250 bar
100 bar
150 bar
Flow l/min
[1.8]
[1.6]
[1.4]
[1.2]
[1.0]
[0.8]
[0.6]
[0.4]
[0.2]
Power kW
[5]
[4]
[3]
[2]
[1]
[0]
Speed min
-1
(rpm)
Flow [US gal/min]
Power [HP]
0 1000 2000 3000 4000
SEP1NN/1,7
SNP1NN/1,7
SKP1NN/1,7
only SNP1NN
and SKP1NN
9
8
7
6
5
4
3
2
1
0
6
5
4
3
2
1
0
7 bar
250
bar
250 bar
100 bar
150 bar
Speed min
-1
(rpm)
Power kW
Flow l/min
[2.2]
[2.0]
[1.8]
[1.6]
[1.4]
[1.2]
[1.0]
[0.8]
[0.6]
[0.4]
[0.2]
[8]
[6]
[5]
[4]
[3]
[2]
[1]
0
Flow [US gal/min]
Power [HP]
only SNP1NN
and SKP1NN
0 1000 2000 3000 4000
SEP1NN/2,2
SNP1NN/2,2
SKP1NN/2,2
6
5
4
3
2
1
11
10
9
8
7
6
5
4
3
2
1
Speed min
-1
(rpm)
Flow l/min
0
250 bar
7 bar
250 bar
150 bar
100 bar
Power kW
[2.2]
[2.4]
[2.6]
[2.8]
[2.0]
[1.8]
[1.6]
[1.4]
[1.2]
[1.0]
[0.8]
[0.6]
[0.4]
[0.2]
[8]
[6]
[5]
[4]
[3]
[2]
[1]
0
Flow [US gal/min]
Power [HP]
0 1000 2000 3000 4000
only SNP1NN
and SKP1NN
SEP1NN/2,6
SNP1NN/2,6
SKP1NN/2,6
Pump performance
graphs
Performance graph for 1.2 frame size Performance graph for 1.7 frame size
Performance graph for 2.2 frame size Performance graph for 2.6 frame size
16
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Pump Performance
11
10
9
8
7
6
5
4
3
2
1
0
only SNP1NN
and SKP1NN
7
6
5
4
3
2
1
0
7 bar
250 bar
250 bar
150 bar
100 bar
Speed min
-1
(rpm)
Flow [US gal/min]
Flow l/min
Power kW
0
SEP1NN/3,2
SNP1NN/3,2
SKP1NN/3,2
[2.2]
[2.4]
[2.6]
[2.8]
[2.0]
[1.8]
[1.6]
[1.4]
[1.2]
[1.0]
[0.8]
[0.6]
[0.4]
[0.2]
[8]
[6]
[7]
[9]
[5]
[4]
[3]
[2]
[1]
Power [HP]
0 1000 2000 3000 4000
12
11
10
9
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
250 bar
150 bar
100 bar
Speed min
-1
(rpm)
Flow l/min
Power kW
0
7 bar
250 bar
Flow [US gal/min]
[2.2]
[2.4]
[2.6]
[2.8]
[3.0]
[3.2]
[2.0]
[1.8]
[1.6]
[1.4]
[1.2]
[1.0]
[0.8]
[0.6]
[0.4]
[0.2]
[8]
[6]
[7]
[9]
[10]
[5]
[4]
[3]
[2]
[1]
Power [HP]
0 1000 2000 3000 4000
only SNP1NN
and SKP1NN
SEP1NN/3,8
SNP1NN/3,8
SKP1NN/3,8
13
12
11
10
9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
250
bar
150 bar
100 bar
Speed min
-1
(rpm)
Power kW
[10]
[9]
[8]
[7]
[6]
[5]
[4]
[3]
[2]
[1]
[0]
Flow l/min
[3.4]
[3.2]
[3.0]
[2.8]
[2.6]
[2.4]
[2.2]
[2.0]
[1.8]
[1.6]
[1.4]
[1.2]
[1.0]
[0.8]
[0.6]
7 bar
250 bar
Flow [US gal/min]
Power [HP]
0 1000 2000 3000
only SNP1NN
and SKP1NN
SEP1NN/4,3
SNP1NN/4,3
SKP1NN/4,3
[4.4]
[4.0]
[3.6]
[3.2]
[2.8]
[2.4]
[2.0]
[1.6]
[1.2]
[0.8]
18
16
14
12
10
8
6
4
2
0
10
8
6
4
2
0
250 bar
150 bar
100 bar
170 bar
Speed min
-1
(rpm)
Flow l/min
Power kW
[12]
[10]
[8]
[6]
[4]
[2]
[0]
7 bar
170-230 bar
Flow [US gal/min]
Power [HP]
0 1000 2000 3000
only SKP1NN
SEP1NN/6,0
SNP1NN/6,0
SKP1NN/6,0
Pump performance graphs (continued)
Performance graph for 3.2 frame size Performance graph for 3.8 frame size
Performance graph for 4.3 frame size
Performance graph for 6.0 frame size
17
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Pump Performance
[6.0]
[5.6]
[5.2]
[4.8]
[4.4]
[4.0]
[3.6]
[3.2]
[2.8]
[2.4]
[2.0]
[1.6]
[1.2]
[0.8]
[0.4]
24
22
20
18
16
14
12
10
8
6
4
2
0
12
10
8
6
4
2
0
150-200
bar
200
bar
150 bar
100 bar
-1
SEP1NN/7,8
SNP1NN/7,8
SKP1NN/7,8
[12]
[14]
[10]
[8]
[6]
[4]
[2]
[0]
only SKP1NN
7 bar
Flow [US gal/min]
Power [HP]
Speed min (rpm)
Flow l/min
Power kW
0
1000 2000 3000
SKP1NN/010
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
10
8
6
4
2
0
7 bar
100 bar
140 bar
140 bar
[7.6]
[7.2]
[6.8]
[6.4]
[6.0]
[5.6]
[5.2]
[4.8]
[4.4]
[4.0]
[3.6]
[3.2]
[2.8]
[2.4]
[2.0]
[1.6]
[1.2]
[0.8]
[0.4]
[14]
[12]
[10]
[8]
[6]
[4]
[2]
[0]
Speed min
-1
(rpm)
Flow l/min
Flow [US gal/min]
Power [HP]
Power kW
0 1000 2000
40
35
30
25
20
15
10
5
0
15
10
5
0
130 bar
130 bar
100 bar
50 bar
[20]
[15]
[10]
[5]
[0]
[5.3]
[4.0]
[2.6]
[1.2]
[10.6]
[9.2]
[8.0]
[6.6]
[0]
Speed min
-1
(rpm)
Flow l/min
Power kW
7 bar
Flow [US gal/min]
Power [HP]
1000 2000
SKP1NN/012
Pump performance graphs (continued)
Performance graph for 7.8 frame size
SKP1NN/012 pump performance graphSKP1NN/010 pump performance graph
18
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Flange, shaft and port congurations for SEP1NN and SNP1NN
Code Flange Shaft Port
01BA
25.4 mm [1.0 in]
pilot Ø
European 4-bolt
1:8 tapered
European flanged
in + pattern
01DA
25.4 mm [1.0 in]
pilot Ø
European 4-bolt
15-teeth splined
m = 0.75
α = 30
o
European flanged
in + pattern
03CA
Turolla OCG
tang
Turolla OCG
tang
Threaded metric
port
Flange, shaft and port congurations for SKP1NN
Code Flange Shaft Port
02BB
30 mm [1.181]
pilot Ø
European 4-bolt
1:8 tapered
European flanged
in + pattern
02FA
30 mm [1.181]
pilot Ø
European 4-bolt
12 mm [0.472 in]
parallel
European flanged
in + pattern
06GA
SAE A-A
2-bolt
12.7 mm [0.5 in]
parallel
Threaded SAE
O-Ring boss
06SA
SAE A-A
2-bolt
9-teeth splined
SAE spline J 498-
9T-20/40DP
Threaded SAE
O-Ring boss
Product Options
Flange, shaft and port
congurations
19
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Product Options
Shaft options
Mounting anges
Direction is viewed facing the shaft. Group 1 pumps are available with a variety of tang,
splined, parallel, and tapered shaft ends. Not all shaft styles are available with all flange
styles.
Shaft availability and nominal torque capability
A B C D E F G H I J K L M N
/ /
Shaft
Mounting ange code with maximum torqueinNm[lb•in]
Code Description
01 02 03 06
BA Taper 1:8 25 [221] – – –
BB Taper 1:8 – 50 [442] – –
DA Spline T-15, m=0.75, alfa=30
o
35 [310] – – –
SA SAE spline J 498-9T-20/40DP – – – 34 [301]
FA Parallel 12 mm [0.47 in] – 24 [212] – –
GA Parallel 12.7 mm [0.50 in] – – – 32 [283]
CA Turolla OCG Tang – – 14 [124] –
Turolla OCG recommends mating splines conform to SAE J498 or DIN 5482.
Turolla OCG external SAE splines have a flat root side fit with circular tooth thickness
reduced by 0.127 mm [0.005 in] in respect to class 1 fit. Dimensions are modified to
assure a clearance fit with the mating spline.
CCaution
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.
Turolla OCG offers many types of industry standard mounting flanges. This table shows
order codes for each available mounting flange and its intended use:
Flange availability
A B C D E F G H I J K L M N
/ /
Flange
Code Description
01 European 25.4 mm 4-bolt
02 European 30 mm 4-bolt
03 Turolla OCG standard Tang drive
06 SAE A-A
20
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Product Options
Various port configurations are available on Group 1 pumps. They include:
European standard flanged ports•
German standard flanged ports•
Gas threaded ports (BSPP)•
O-Ring boss (following SAE J1926/1 [ISO 11926-1] UNF threads, standard)•
A table of dimensions is on the next page.
G – Inlet port conguration codes and H – Outlet port conguration codes
A B C D E F G H I J K L M N
/ /
B1
8x30xM6
Flanged port with threaded holes in X pattern,
in center of body
B2
13x30xM6
C1
8x26xM5
Flanged port with threaded holes in + pattern
(European standard ports)
C2
12x26xM5
C3
13,5x30xM6
D3
M14x1,5
Threaded metric port
D5
M18x1,5
D7
M22x1,5
E3
-18UNF
Threaded SAE, O-Ring boss port
E4
¾ -16UNF
E5
-14UNF
F2
¼ GAS Threaded GAS (BSPP) port
F3
 GAS
F4
½ GAS
H5
M18x1,5 Threaded metric port ISO 6149
H7
M22x1,5
Inlet/Outlet port
congurations
21
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Available ports
Ports
Product Options
Dimensions of Group 1 pump ports
Port type B C D E F
Port dimension a b c g h i d e f
Type (displacement)
1,2
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M14x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
1,7
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M14x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
2,2
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M14x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
2,6
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M14x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
3,2
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M14x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
3,8
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
4,3
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 8 [0.315] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
6,0
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
7,8
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
010
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
012
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B
3
/
8 Gas (BSPP)
Outlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5
9
/
16–18UNF–2B
3
/
8 Gas (BSPP)
g
C
B
D
F
E
h
(4 holes min. full thd.
10 [0.394] deep)
a
c
i
d
b
45
o
(4 holes min. full thd.
10 [0.394] deep)
f
e
22
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Integral relief valve
Integral relief valve
covers SNP1IN
Dimensions
74.5
[2.933] max.
62.0
[2.441] max.
V
+1.0 [+0.039]
-0.5 [-0.020]
For configuration 03 only
B max
P101 564E
Valve performance graph
Product Options
SNP1IN
Turolla OCG offers an optional integral relief valve integrated in the rear cover. It is
drained internally and directs all flow from the pump outlet to the inlet when the outlet
pressure reaches the valve setting.
CCaution
When the relief valve is operating in bypass condition, rapid heat genera-
tion occurs. If this bypass condition continues, the pump prematurely fails.
The reason for this is that it is a rule, not an exception.
bar
With mineral oil @ 26 cSt
0
1000
2000
3000
4000
5000
psi
048121620
l/min
0
12
345
US gal/min
0
100
200
300
400
P101 565E
Minimum valve setting
Integral relief valve and covers dimensions
Type
(displacement)
1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8 010 012
Dimensions
mm [in]
B
95.5
[3.760]
97
[3.819]
99
[3.989]
101
[3.976]
103
[4.055]
105
[4.134]
107
[4.213]
113.5
[4.468]
120
[4.724]
129
[5.079]
137
[5.394]
V
85.0
[3.346]
86.5
[3.406]
88.5
[3.484]
90.5
[3.563]
92.5
[3.642]
94.5
[3.720]
96.5
[3.799]
103.0
[4.055]
109.5
[4.311]
118.5
[4.665]
126.5
[4.980]
For conguration 06 (SAE A-A) dimension B and V have to be increased 4.5
mm [0.177 in].
23
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Product Options
These tables detail the various codes for ordering integral relief valves:
A B C D E F G H I J K L M N
S N P 1 I N
/ /
V
i = inlet
o = outlet
Valve schematic
Variant codes for
ordering integral relief
valves
Code
Pressure setting
bar [psi]
A No setting
B No valve
C 18 [261]
D 25 [363]
E 30 [435]
F 35 [508]
G 40 [580]
K 50 [725]
L 60 [870]
M 70 [1015]
N 80 [1160]
O 90 [1305]
P 100 [1450]
Q 110 [1595]
R 120 [1740]
S 130 [1885]
T 140 [2030]
U 160 [2320]
V 170 [2465]
W 180 [2611]
X 210 [3045]
Y 240 [3480]
Z 250 [3626]
Integral relief valve (internal drain)
i
o
Integral relief valve (external drain)
i
e
o
P101 563E
Integral relief valve
schematic
Code
Pump speed for RV setting
min
-1
(rpm)
A Not defined
C 500
E 1000
F 1250
G 1500
K 2000
I 2250
L 2500
M 2800
N 3000
O 3250
24
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
SNP1NN – 01BA and
01DA
This drawing shows the standard porting for 01BA and 01DA.
Available in Series SNP1NN only.
01BA
01DA
1:8
Cone reference diameter
to cone reference diameter
Recommended
tightening
torque: 7-12 Nm
Distance from front flange
29 [1.14]
M7-6g
14.4 [0.583]
5.2 [0.205]
12.4 [0.488]
X
Pilot width
-0.041
-0.020
16.5 [0.65]
4.2 [0.165]
X
Ø
0.75 [0.0295]
body width
69.4 [2.73] max
52.4 [2.06]
88.1 [3.47] max
74.5 [2.93] max
(53.8 [2.12] max)
(34.3 [1.35] max)
(71.9 [2.83]
26.2 [1.03]
45.7 [1.8]
68
±0.25
[2.68
±0.010
]
5.5 [0.217 ]
+0.15
-0.25
+0.0059
-0.0098
-0.0098
2.41 [0.0949 ]
0
-0.025
0
D/d
E/e
C/c
Spline:
Z=15 M=0.75 alfa=30°
Circular tooth thickness:
1.028-1.068 [0.04 0-0.042]
Internal spline dia:
9.8-10 [0.386-0.394]
to shoulder
front flange
Distance from
4.5 [0.177]
14 [0.551]
21.5 [0.846]
(min full thd 10 [0.394] deep)
±0.50 [0.020]
±0.20 [0.008]
B
max
A
A
A
A-A
Ø 25.4 [1.0 ]
Ø 9.82 [0.387]
10.8 ±0.50 [0.425 ±0.020]
Ø 11.9 [0.469 ]
Ø 7.2 - 8 [0.283-0.315]
0
-0.110
0
-0.004
-0.0016
-0.0008
SNP1NN – 01BA and 01DA dimensions
Frame size 1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8
Dimension
A
37.75
[1.486]
38.5
[1.516]
39.5
[1.555]
40.5
[1.634]
41.5
[1.634]
42.5
[1.673]
43.5
[1.713]
46.75
[1.841]
50.0
[1.969]
B
79.5
[3.130]
81.0
[3.189]
83.0
[3.268]
85.0
[3.346]
87.0
[3.425]
89.0
[3.504]
91.0
[3.583]
97.5
[3.839]
104.0
[4.094]
Inlet/Outlet
C/c 12 [0.472]
D/d 26 [1.024]
E/e M5
Model code examples and maximum shaft torque
Flange/drive gear Model code example Maximum shaft torque
01BA SNP1NN/3,8RN01BAP1C2C2NNNN/NNNNN 25 N•m[221 lb•in]
01DA SNP1NN/6,0LN01DAP1C2C2NNNN/NNNNN
35 N•m[310 lb•in]
For further details on ordering, see Model Code, pages 6-7.
Dimensions
mm
[in]
25
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
Dimensions
SKP1NN – 02BB and 02FA dimensions
Frame size 1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8 010 012
Dimension
A
37.75
[1.486]
38.5
[1.516]
39.5
[1.555]
40.5
[1.634]
41.5
[1.634]
42.5
[1.673]
43.5
[1.713]
46.75
[1.841]
50.0
[1.969]
54.5
[2.146]
58.5
[2.303]
B
79.5
[3.130]
81.0
[3.189]
83.0
[3.268]
85.0
[3.346]
87.0
[3.425]
89.0
[3.504]
91.0
[3.583]
97.5
[3.839]
104.0
[4.094]
113.0
[4.449]
121.0
[4.764]
Inlet/Outlet
C/c 12 [0.472]
D/d 26 [1.024]
E/e M5
This drawing shows the standard porting for 02BB and 02FA.
Available in Series SKP1NN only.
Model code examples and maximum shaft torque
Flange/drive gear Model code example Maximum shaft torque
02BB SKP1NN/6,0RN02BBP1C2C2NNNN/NNNNN 50 N•m[442 lb•in]
02FA SKP1NN/ 2,2LN02FAP1C2C2NNNN/NNNNN
24 N•m[212 lb•in]
For further details on ordering, see Model Code, pages 6-7.
12.0 [0.472 ]
+0.0 +0.0
-0.018 -0.001
M10 x 1-6g
11.7 [0.461]
8.3 [0.327]
Distance from front
flange to shoulder
31.5 [1.240]
3.0 [0.118 ]
+0.0 +0.0
-0.030 -0.001
13.2 [0.520 ]
+0.05 +0.002
-0.20 -0.008
88.2 [3.472] max
7.5 [0.295 ]
+0.25 +0.010
-0.15 -0.006
3.0 [0.118
]
0
0
-0.030 -0.001
C/c
D/d
E/e
A
16.5 [0.650]
7.0 [0.276]
Pilot width
8.0 [0.315]
Distance from front flange
to cone reference diameter
B max
M10x1-6g
Ø13.95 [0.549]
Cone reference diameter
10.8 [0.425
30.0 [1.181
]
-0.020 -0.0008
-0.041 -0.0016
68.0 ±0.25
[2.677 ±0.010]
body width
74.5 [2.933] max
56.0 [2.205]
70.9 [2.791] max
24.5 [0.965]
48.5 [1.909]
(73.0 [2.874])
(32.1 [1.264] max)
(56.1 [2.209] max)
Ø6.7-7.5
[0.264-0.295]
1:
8
35 [1.378]
15.75 [0.620]
15.5 [0.610]
±0.20 [±0.008]
±0.50 ±0.020]
±0.50 [±0.02]
02BB 02FA
(min full thd 10 mm
[0.394] deep)
A
A
A-A
B
B
B-B
X
Ø
0.75 [0.0295]
X
Recommended
tightening
torque: 10-16 Nm
Recommended
tightening
torque: 10-16 Nm
SKP1NN – 02BB and
02FA
mm
[in]
26
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
This drawing shows the standard porting for 03CA.
C/c
2.5 [0.098]
22.75 [0.896] min
2.0 [0.079]
OR 28.30 x 1.78
8.5 [0.335]
22.0 [0.866]
body width
74.5 [2.933] max
Ø8.5-9.0 [0.335-0.354]
40.0 [1.575]
40.0 [1.575]
29.65 [1.167]
10.35 [0.407]
8.5 [0.335] max
A ±0.50
[±0.020]
B
±1.0 [±0.039]
10.8 ±0.50 [0.425 ±0.020]
63.0 ±0.25
[2.48 ±0.01]
4.8
±0.10
[0.189 ±0.004]
0.8
-0.30
[0.031
-0.012
]
7.0 [0.276]
Pilot width
5.0
-0.080
[0.197
-0.003
]
+0.020
+0.001
+0.040
+0.016
32.0
-0.050
[1.260
-0.002
]
-0.025 -0.001
X
Ø
0.4 [0.016]
03CA
X
SNP1NN, SEP1NN – 03CA dimensions
Frame size 1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8
Dimension
A
37.75
[1.486]
38.5
[1.516]
39.5
[1.555]
40.5
[1.634]
41.5
[1.634]
42.5
[1.673]
43.5
[1.713]
46.75
[1.841]
50
[1.969]
B
70
[2.756]
71.5
[2.815]
73.5
[2.894]
75.5
[2.972]
77.5
[3.051]
79.5
[3.130]
81.5
[3.209]
88.0
[3.465]
94.5
[3.720]
Inlet C M18 x 1.5 THD 12 [0.472] deep
Outlet c M14 x 1.5, THD 12 [0.472] deep M18 x 1.5, THD 12 [0.472] deep
Model code examples and maximum shaft torque
Flange/drive gear Model code example Maximum shaft torque
03CA
SNP1NN/1,7RN03CA03D5D3NNNN/NNNNN
14 N•m[124 lb•in]
SEP1NN/2,2LN03CA03D5D3NNNN/NNNNN
For further details on ordering, see Model Code, pages 6-7.
SNP1NN, SEP1NN –
03CA
Dimensions
mm
[in]
27
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
L1016399 • June 2010 • Rev A
Group 1 Gear Pumps
Technical Information
12.344 [0.486 ]
0
0
0
0
-0.05
Splined:
SAE J498-9T-20/40DP
Flat root side fit
Circular tooth thickness:
0.127mm [0.005]
less than class 1 fit
15.6 [0.614]
19.1 [0.752]
7.9 [0.311]
27.0 [1.063]
74.5 [2.933] max
body width
R 32.1 [1.26] max
82.55 [3.258]
103.4 [4.071] max
80.2 [3.157] max
X
10.2-10.8 [.402-.425]
Ø 0.75 [0.030]
3.2 [0.126 ]
-0.025 -0.126
13.94-14.20 [0.549-0.559]
Straight thread
O-Ring boss
8.0 [0.315]
6.0 [0.236]
Pilot width
7.9 [0.311]
Distance from front
flange to shoulder
Distance from front
flange to shoulder
19.1 [0.752]
27.0 [1.063]
12.7 [0.500 ]
-0.025 -0.001
10.8 ±0.50 [0.425 ±0.020]
68.0 ±0.25 [2.677 ±0.010]
50.8 [2.0 ]
0
0
-0.050 -0.002
06GA
06SA
C/c
±0.50 [0.020]
B
max
A
A
A
A-A
-0.127
0
0
SKP1NN – 06GA and 06SA dimensions
Frame size 1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8 010 012
Dimension
A
42.25
[1.663]
43
[1.693]
44
[1.732]
45.0
[1.772]
46.0
[1.811]
47
[1.850]
48
[1.890]
51.25
[2.018]
54.5
[2.146]
59
[2.323]
63.5
[2.50]
B
84
[3.307]
85.5
[3.366]
87.5
[3.445]
89.5
[3.524]
91.5
[3.602]
93.5
[3.681]
95.5
[3.760]
102
[4.016]
108.5
[4.272]
117.5
[4.626]
125.5
[4.941]
Inlet C ¾–16UNF–2B, THD 14.3 [0.563] deep
Outlet c
9
/
16 –18UNF–2B, THD 12.7 [0.500] deep
This drawing shows the standard porting for 06GA and 06SA.
Available in Series SKP1NN only.
SKP1NN – 06GA and
06SA
Model code examples and maximum shaft torque
Flange/drive gear Model code example Maximum shaft torque
06GA SKP1NN/3,2RN06GAP1E4E3NNNN/NNNNN 32 N•m[283 lb•in]
06SA SKP1NN/012LN06SAP1E4E3NNNN/NNNNN
34 N•m[301 lb•in]
For further details on ordering, see Model Code, pages 6-7.
Dimensions
mm
[in]
Our Products
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Turolla OpenCircuitGear™
Turolla OCG, with more than 60 years of experience in designing
and manufacturing gear pumps, gear motors and fan drive motors
of superior quality, is the ideal partner ensuring robustness and
reliability to your work functions.
We are fast and responsive - the  rst to specify a customer product,
the most experienced in providing technical knowledge and
support for fan drive solutions.
We o er a lean value chain to our partners and customers and the
shortest lead time in the market.
Turolla OCG is member of the Sauer-Danfoss Group.
Local address:
Turolla OpenCircuitGear
Via Villanova 28
40050 Villanova di Castenaso
Bologna, Italy
Phone: +39 051 6054411
Fax: +39 051 6053033
Turolla OpenCircuitGear
Kukučínova 2148-84
01701 Považská Bystrica, Slovakia
Phone: +421 424 301 544
Fax: +421 424 301 626
Turolla OpenCircuitGear
2800 East 13th Street
Ames, IA 50010
USA
Phone: +1 515 239 6000
Fax: +1 515 239 6618
OpenCircuitGear
MEMBER OF THE SAUER-DANFOSS GROUP
™
www.TurollaOCG.com
L1016399 • June 2010 • Rev A