Technical Information
Gear Pumps
Group 0 and Group 1
www.danfoss.com
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Revision history Table of revisions
Date Changed Rev
October 2019 First edition 0101
2 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Contents
General Information
Overview..............................................................................................................................................................................................5
Features and benefits..................................................................................................................................................................... 6
Group 0
Design...................................................................................................................................................................................................7
Features................................................................................................................................................................................................7
Product Code..................................................................................................................................................................................... 8
Model code....................................................................................................................................................................................8
A Family.....................................................................................................................................................................................8
B Displacement.......................................................................................................................................................................8
C Rotation.................................................................................................................................................................................9
D Project version....................................................................................................................................................................9
E Mounting flange.................................................................................................................................................................9
F Drive gear..............................................................................................................................................................................9
G Rear cover.............................................................................................................................................................................9
H Inlet size; I Outlet size.......................................................................................................................................................9
J Ports positions & Special body.................................................................................................................................... 10
K Seals......................................................................................................................................................................................10
L Screws.................................................................................................................................................................................. 10
M Set valve.............................................................................................................................................................................10
N Type mark.......................................................................................................................................................................... 10
O Mark position....................................................................................................................................................................10
Dimensions.......................................................................................................................................................................................11
TFPONN-01FA............................................................................................................................................................................ 11
Group 1
Pump design....................................................................................................................................................................................12
SNP1NN............................................................................................................................................................................................. 12
SKP1NN..............................................................................................................................................................................................13
SKP1IN................................................................................................................................................................................................13
Pump displacements....................................................................................................................................................................14
General Information
Technical data................................................................................................................................................................................. 15
Product Code
Model code.......................................................................................................................................................................................17
A Family........................................................................................................................................................................................17
B Displacement..........................................................................................................................................................................17
C Rotation....................................................................................................................................................................................17
D Project version.......................................................................................................................................................................17
E Mounting flange....................................................................................................................................................................18
F Drive gear.................................................................................................................................................................................18
G Rear cover................................................................................................................................................................................18
H Inlet size; I Outlet size..........................................................................................................................................................18
J Ports positions & Special body..........................................................................................................................................19
K Seals........................................................................................................................................................................................... 19
L Screws........................................................................................................................................................................................20
M Set valve..................................................................................................................................................................................20
N Type mark................................................................................................................................................................................20
O Mark position.........................................................................................................................................................................20
Determination of Nominal Pump Sizes
Determination of nominal pump sizes.................................................................................................................................. 21
System Requirements
Pressure............................................................................................................................................................................................. 22
Speed..................................................................................................................................................................................................22
Hydraulic fluids............................................................................................................................................................................... 23
Temperature and viscosity......................................................................................................................................................... 23
Filtration............................................................................................................................................................................................ 24
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Contents
Filters.............................................................................................................................................................................................24
Selecting a filter.........................................................................................................................................................................24
Reservoir...................................................................................................................................................................................... 24
Line sizing......................................................................................................................................................................................... 25
Pump drive.......................................................................................................................................................................................25
Pump drive data form.................................................................................................................................................................. 26
Pump Life..........................................................................................................................................................................................27
Sound levels.....................................................................................................................................................................................27
Pump Performance
Pump performance graphs........................................................................................................................................................ 28
Product Options
Flange, shaft and port configurations....................................................................................................................................31
Shaft options....................................................................................................................................................................................32
Inlet/Outlet port configurations...............................................................................................................................................33
Ports....................................................................................................................................................................................................33
SNP1IN............................................................................................................................................................................................... 34
Variant codes for ordering integral relief valves.................................................................................................................35
Integral relief valve schematic...................................................................................................................................................37
Dimensions
SNP1NN - 01BA and 01DA.......................................................................................................................................................... 38
SKP1NN – 02BB and 02FA........................................................................................................................................................... 39
SNP1NN – 03CA.............................................................................................................................................................................. 40
SKP1NN – 06GA and 06SA.......................................................................................................................................................... 41
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
General Information
Overview
The Danfoss Group 0 and 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.
TFP0NN 01FA
SNP1NN 01BA
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
General Information
SKP1NN 06SA
Features and benefits
SNP1NN 03CA
Gear pump attributes:
•
Up to 16 displacements from 0,25 to 12 cm3/rev [from 0.015 to 0.732 in3/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
•
Group 1 units are available as unidirectional and bi-directional motors, also with integral relief valve
•
You can combine groups 1, 2 and 3 to make multi-stage pump
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 0
OwerTFP0NN pumps provide flexibility, numerous displacements, features, and shaft/port options. The
TFP0NN series has earned an excellent reputation for rugged, dependable performance at continuous
pressures and speeds.
TFP0NN 01FA
Design
Features
TFP0NN pumps are available in five displacements from 0.25 to 1.27 cm3/rev [0.015 to 0.075 in3/rev].
Complete information can be found by referring to the specific sections in this technical manual.
Constructed of high strength aluminum, the TFP0NN rotation is either clockwise or counterclockwise.
Special features of Group 0 pumps include:
•
Wide range of displacements
•
Parallel shaft ends
•
Standard mounting flange (European, 2-bolt)
•
European port options
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 0
Technical data – Group 0 gear pumps
Displacement
Peak pressure
Rated pressure
Minimum pressure at maximum speed
Minimum speed at 103 bar [1500 psi]
Maximum speed 8000 8000 8000 7000 5000
Weight kg [lb]
Moment of inertia of rotating components
Theoretical flow at maximum speed
cm3/rev
[in3/rev]
bar [psi]
-1
min
(rpm)
x 10-6 kg•m
[x 10-6 lb•ft2]
l/min
[US gal/min]
Frame size
,25 ,45 ,57 ,76 1,3
0.25
[0.015]
200
[2900]
180
[2600]
103
[1500]
500 500 500 500 500
0.40
[0.88]
2
0.425
[10.09]
2.00
[0.53]
0.45
[0.027]
200
[2900]
180
[2600]
103
[1500]
0.45
[1.00]
0.544
[12.91]
3.60
[0.95]
0.57
[0.034]
200
[2900]
180
[2600]
103
[1500]
0.46
[1.01]
0.621
[14.74]
4.56
[1.20]
[0.045]
[2900]
[2600]
[1500]
[1.03]
0.737
[17.49]
[1.41]
0.76
200
180
103
0.47
5.32
1.27
[0.075]
200
[2900]
180
[2600]
103
[1500]
0.48
[1.06]
1.049
[24.89]
6.35
[1.68]
Product Code
1 kg•m2 = 23.68 lb•ft
2
For applications requiring parameters beyond those listed above, contact Danfoss.
Model code
A Family
A B C D E F G H I J K L M N O
● ● ● ● ● ● / /
TFP0NN
TFR0NN
Std gear pump
Reversible pump
B Displacement
A B C D E F G H I J K L M N O
/ ● ● ● /
0,25
0,45
0,57
0,76
1,3
Displacement 0,25cc
Displacement 0,45cc
Displacement 0,57cc
Displacement 0,76cc
Displacement 1,3cc
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 0
C Rotation
A B C D E F G H I J K L M N O
/ ● /
L
R
B
Left rotation
Right rotation
Reversible pump
D Project version
A B C D E F G H I J K L M N O
/ ● /
N
Std gear version
E Mounting flange
A B C D E F G H I J K L M N O
/ ● ● /
Code Description (Type of flange • Type of drive gear • Preferred ports for configuration)
01
European 2-bolt flange
F Drive gear
A B C D E F G H I J K L M N O
/ ● ● /
CA
FA
Tang drive 5xØ7
Parallel shaft 7,0 mm [0.276 in]
G Rear cover
A B C D E F G H I J K L M N O
/ ● ● /
P1
P3
H Inlet size; I Outlet size
A B C D E F G H I J K L M N O
/ ● ● ● ● /
Standard cover for pump
Standard cover for reversible pump
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 0
D1 M10x1- Threaded metric port
D3 M14x1,5- Threaded metric port
F2 1/4 GAS - Threaded BSP port
J Ports positions & Special body
A B C D E F G H I J K L M N O
/ ● ● /
NN
K Seals
A B C D E F G H I J K L M N O
N
L Screws
A B C D E F G H I J K L M N O
N
M Set valve
A B C D E F G H I J K L M N O
NNN
N Type mark
Std position from catalog
/ ● /
Standard Buna seal
/ ● /
Std screws
/ / ● ● ●
No valve
A B C D E F G H I J K L M N O
/ / ●
N
A
Standard Danfoss Marking
Standard Danfoss Marking+Customer Code
O Mark position
A B C D E F G H I J K L M N O
/ / ●
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 0
Dimensions
N
A
Std Marking position (on top)
Special Marking position on the bottom
TFPONN-01FA
Available 01FA configuration only.
TFP0NN dimensions
Frame size ,25 ,45 ,57 ,76 1,3
Dimension
Inlet/Outlet M10 x 1
A 53.5 [2.10] 55.0 [2.16] 56.0 [2.20] 61.5 [2.42] 61.5 [2.42]
B 26.5 [1.04] 27.3 [1.07] 27.8 [1.09] 30.5 [1.20] 30.5 [1.20]
Model code examples and maximum shaft torque
Flange/drive gear Model code example
01FA TFP0NN/,57RN01FAP1D1D1NNNN/NNNNN 4.5 N•m [39.8 lb•in]
Maximum shaft torque
For further details on ordering, see Product Code on page 8.
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 1
Pump design
SNP1NN
SNP1NN pumps only include European flange and shaft configurations (code 01BA, 01DA, and 03CA).
SNP1NN 01BA (cut away)
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Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 1
SKP1NN
SKP1NN has a larger diameter shaft than the SNP1NN. It spans the complete displacement range at
higher pressures than the SNP1IN and the SNP1NN. Configurations include European and SAE flanges
and shafts (code 02BB, 02FA, 06SA, and 06GA).
SKP1IN
Danfoss 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)
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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
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Group 1
Pump displacements
Quick reference chart for pump displacements vs. rated pressure
14 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
General Information
Technical data
1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8 010 012
cm3/r
Displacement
Peak pressure
Rated
pressure
Minimum
speed at
0-150 bar
Min. speed at
150 bar to
rated
min
(rpm)
pressure
Maximum
speed
Peak pressure
Rated
pressure
Minimum
speed at
0-150 bar
Min. speed at
150 bar to
rated
min
(rpm)
pressure
Maximum
speed
Weight kg [lb]
Moment of
inertia of
rotating
components
Theoretical
x 10
kg•m
[x 10
lb•ft2]
l/min
flow at
maximum
speed
*
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.
1.18
ev
[in3/
[0.072]
1.57
[0.096]
rev]
270
270
[3915]
250
[3625]
[3915]
250
[3625]
bar
[psi]
800 800 600 600 600 600 500 500 500
-1
1200 1200 1000 1000 1000 1000 800 800 800
4000 4000 4000 4000 4000 4000 3000 3000 3000
270
270
[3915]
250
[3625]
[3915]
250
[3625]
bar
[psi]
800 800 800 800 800 800 600 600 600 600 600
-1
1200 1200 1000 1000 1000 1000 1000 800 800 800 –
4000 4000 4000 4000 4000 4000 3000 3000 3000 2000 2000
1.02
1.05
[2.26]
[2.31]
-6
2
3.2
3.7
[89]
6.28
[1.66]
[US
gal/
-6
[77]
4.72
[1.25]
min]
2.09
2.62
[0.128]
[0.160]
[0.192]
SNP1NN
270
270
[3915]
[3915]
[3915]
250
250
[3625]
[3625]
[3625]
SKP1NN
270
270
[3915]
[3915]
[3915]
250
250
[3625]
[3625]
[3625]
All (SNP1NN, SKP1NN)
1.09
1.11
[2.40]
[2.45]
4.4
5.1
[105]
[120]
8.36
10.48
[2.21]
[2.77]
3.14
270
250
*
270
250
1.14
[2.51]
5.7
[136]
12.56
[3.32]
Frame size
3.66
[0.223]
270
[3915]
250
[3625]
270
[3915]
250
[3625]
1.18
[2.60]
6.4
[152]
14.64
[3.87]
4.19
[0.256]
270
[3915]
250
[3625]
270
[3915]
250
[3625]
1.20
[2.65]
7.1
[168]
12.57
[3.32]
5.89
[0.359]
210
[3045]
190
[2760]
250
[3625]
230
[3335]
1.30
[2.87]
9.3
[220]
17.67
[4.67]
7.59
[0.463]
170
[2465]
150
[2175]
220
[3190]
200
[2900]
1.39
[3.06]
11.4
[271]
22.77
[6.02]
9.94
12.00
[0.607]
[0.732]
– –
170
140
[2465]
[2030]
150
120
[2175]
[1740]
1.55
1.65
[3.42]
[3.64]
14.6
17.1
[347]
[407]
19.88
[5.25]24[6.34]
1 kg•m2 = 23.68 lb•ft
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Danfoss | October 2019 BC320173499791en-000101 | 15
2
C
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
General Information
Caution
The rated and peak pressure mentioned are for pumps with flanged ports only. When threaded ports are
required a derated performance has to be considered. To verify the compliance of an high pressure
application with a threaded ports pump apply to a Danfoss representative.
16 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Code
Model code
A Family
A B C D E F G H I J K L M N O
● ● ● ● ● ● / /
SNB1NN
SNP1NN
SNC1NN
SNP1IN
SKP1NN
SKP1IN
Gear pump with inlet port on cover and outlet port on flange
Standard gear pump
Gear pump with inlet and outlet ports on rear cover
Gear pump with internal drain relief valve
High torque gear pump
High torque gear pump with internal drain relief valve
B Displacement
A B C D E F G H I J K L M N O
1,2
1,7
2,2
2,6
3,2
3,8
4,3
6,0
7,8
010
012
1,18 cc
1,57 cc
2,09 cc
2,62 cc
3,14 cc
3,66 cc
4,19 cc
5,89 cc
7,59 cc
9,94 cc
12,00 cc
/ ● ● ● /
C Rotation
A B C D E F G H I J K L M N O
/ ● /
L
R
Left rotation
Right rotation
D Project version
A B C D E F G H I J K L M N O
/ ● /
N
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Danfoss | October 2019 BC320173499791en-000101 | 17
Standard gear pump
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Code
E Mounting flange
A B C D E F G H I J K L M N O
/ ● ● /
Code Description (Type of flange • Type of drive gear • Preferred ports for configuration)
01
02
03
04
06
F Drive gear
pilot Ø25,4+4 holes
pilot Ø30+4 holes
pilot Ø32+O-ring+2 holes through body
pilot Ø32+2 holes through body
SAE A-A pilot Ø50,8+ 2 holes
A B C D E F G H I J K L M N O
/ ● ● /
AA
BA
BB
CA
CE
CM
DA
DB
FA
GA
G Rear cover
A B C D E F G H I J K L M N O
03
08
C1
I1
I3
P1
Taper 1:5-M6-Key 2
Taper 1:8-M7-Key 2,41
Taper 1:8-M10x1-Key 3
Tang 5x Ø10 FR03
Tang 6,63x Ø11 - for SKP1xN
Tang 5x Ø10-type 03 + w/o coupling
SplinedZ15-m0,75-alfa 30°-L14 - for SNP1xx
SplinedZ15-m0,75-alfa 30°-L14 - for SKP1xx
Parallel Ø12-Thread M10x1-Key 3
Parallel Ø12,7-Key 3.2
/ ● ● /
Cover 03
Cover 08 with Inlet port 3/8" Gas
Cover pump with front GAS Thread Inlet 3/8 ; Outlet 3/8
Cover pump with relief valve
Cover 03 with relief valve
Std Cover pump
H Inlet size; I Outlet size
A B C D E F G H I J K L M N O
/ ● ● ● ● /
18 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Code
NN
B1
B2
C1
C2
C3
D3
D5
D7
E3
E4
E5
Without inlet
8x30xM6
13x30xM6
8x26xM5
12x26xM5
13, 5x30xM6
M14x1,5
M18x1,5
M22x1,5
9/16-18UNF
¾-16UNF
7/8-14UNF
F2
F3
F4
H2
H4
H5
H7
12xM18x 1, 5-ISO6149
13, 5xM22x 1, 5-ISO6149
J Ports positions & Special body
A B C D E F G H I J K L M N O
/ ● ● /
NN
Std from catalogue
K Seals
A B C D E F G H I J K L M N O
/ ● /
¼ GAS
3/8 GAS
½ GAS
10xM12x1,5-ISO6149
12xM16x1,5-ISO6149
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Danfoss | October 2019 BC320173499791en-000101 | 19
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Code
N
A
B
L Screws
A B C D E F G H I J K L M N O
N
B
M Set valve
A B C D E F G H I J K L M N O
NNN
V**
N Type mark
A B C D E F G H I J K L M N O
Standard NBR seal
Without shaft seal
With VITON seals
/ ● /
Std screws
GEOMET screws
/ / ● ● ●
No valve
not defined-pressure no setting :oil ISO VG68-45°
/ / ●
N
A
Z
Standard Danfoss Marking
Standard Danfoss Marking+Customer Code
Without Marking
O Mark position
A B C D E F G H I J K L M N O
N
A
Std Marking position (on top)
Special Marking position on the bottom
/ / ●
20 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Determination of Nominal Pump Sizes
Determination of nominal pump sizes
Use these formula to determine the nominal pump size for a specific application:
Vg = Displacement per rev. cm3/rev [in3/rev]
pHD = Outlet pressure bar [psi]
p
= Inlet pressure bar [psi]
ND
Δp = pHD – p
n = Speed min-1 (rpm)
ηv = Volumetric efficiency
ηm = Mechanical (torque) efficiency
ηt = Overall efficiency (ηv • ηm)
ND
bar [psi]
©
Danfoss | October 2019 BC320173499791en-000101 | 21
Peak pressure
Rated pressure
Reaction time (100 ms max)
Time
Pressure
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
System Requirements
Pressure
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.
Max. continuous vacuum
Max. intermittent vacuum
Max. pressure
bar abs. [in. Hg] 0.8 [23.6]
0.6 [17.7]
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 accompanying illustration
shows peak pressure in relation to rated pressure and reaction time (100 ms maximum).
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 of pressure 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.
Speed
Maximum speed is the limit recommended by Danfoss 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 here.
22 | © Danfoss | October 2019 BC320173499791en-000101
Rated
P
1
Pressure
0
N MaxN
2
Speed
Operating
envelope
1
C
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
System Requirements
Speed versus pressure
Where:
N1 = Minimum speed at 100 bar
N2 = Minimum speed at 180 bar
Hydraulic fluids
Ratings and data for SNP1NN, 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.
Caution
Never mix hydraulic fluids.
Temperature and viscosity
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.
©
Danfoss | October 2019 BC320173499791en-000101 | 23
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
System Requirements
Fluid viscosity
Maximum (cold start)
Recommended range
Minimum
Temperature
Minimum (cold start)
Maximum continuous
Peak (intermittent)
Filtration
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).
mm2/s [SUS]
°C [°F]
1000 [4600]
12-60 [66-290]
10 [60]
-20 [-4]
80 [176]
90 [194]
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). For:
•
suction filtration, with controlled reservoir ingression, use a β
•
return or pressure filtration, use a pressure filtration with an efficiency of β10 = 75
35-45
= 75 filter
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 βx ratio
Fluid cleanliness level (per ISO 4406)
βx ratio (suction filtration)
βx ratio (pressure or return filtration)
Recommended inlet screen size
Class 22/18/13 or better
β
= 75 and β10 = 2
35-45
β10 = 75
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.
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 deaeration of
the fluid as it passes through, and accommodates a fluid dwell-time between 60 and 180 seconds,
allowing entrained air to escape.
24 | © Danfoss | October 2019 BC320173499791en-000101
Pilot cavity
Ø 0.1 [0.004]
Mating spline
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
System Requirements
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.
Line sizing
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
Outlet
Return
m/s [ft/sec]
2.5 [8.2]
5.0 [16.4]
3.0 [9.8]
Pump drive
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.
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.
©
Danfoss | October 2019 BC320173499791en-000101 | 25
C
90
o
a
a
0
o
270
o
180
o
0
o
Inlet port
Inlet port
a
dw
270
o
180
o
90
o
dw
a
P
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
System Requirements
Caution
In order to avoid spline shaft damages it is recommended to use carburized 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.
Pump drive data form
Contact Danfoss if continuously applied external radial or thrust loads occur. Fill out this page and send
the complete form to your Danfoss representative for an assistance in applying pumps with belt or gear
drive. This illustration shows a pump with counterclockwise orientation:
Optimal radial load position
min-1 (rpm)
Application data
Item Value Unit
Pump displacement cm3/rev [in3/rev]
Rated system pressure bar psi
Relief valve setting
Pump shaft rotation left right
Pump minimum speed
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
26 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
System Requirements
Application data (continued)
Item Value Unit
Angular orientation of gear or belt to inlet port
Pitch diameter of gear or pulley dw mm in
Distance from flange to center of gear or pulley a
Pump Life
Pump life is a function of speed, system pressure, and other system parameters (such as fluid quality and
cleanliness).
All Danfoss 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.
B10 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.
ɑ
degree
Sound levels
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 compressibility 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.
©
Danfoss | October 2019 BC320173499791en-000101 | 27
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Pump Performance
Pump performance graphs
The following graphs 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 mm2/s
[cSt]).
28 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Pump Performance
©
Danfoss | October 2019 BC320173499791en-000101 | 29
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Pump Performance
30 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Options
Flange, shaft and port configurations
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
pilot Ø32 + O-ring + 2 holes
03CA
through body
15-teeth splined m
= 0.75
a = 30o
Danfoss tang Threaded metric
European flanged in
+ pattern
port
Flange, shaft and port configurations for SKP1NN
Code Flange Shaft Port
02BB 30 mm [1.181]
pilot Ø European 4bolt
02FA 30 mm [1.181]
pilot Ø European 4bolt
1:8 tapered European flanged
12 mm [0.472 in] parallel European flanged
in + pattern
in + pattern
06GA SAE A-A
2-bolt
06SA SAE A-A
2-bolt
©
Danfoss | October 2019 BC320173499791en-000101 | 31
12.7 mm [0.5 in] parallel Threaded SAE ORing boss
9-teeth splined SAE
spline J
498-9T-20/40DP
Threaded SAE ORing boss
C
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Options
Shaft options
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 O
/ ● ● /
Shaft Mounting flange code with maximum torque in Nm [lb•in]
Code Description 01 02 03 04 06 08 B1 V6
Taper 1:5-M6 25 [221]
AA
Taper 1:8-M7 25 [221]
BA
Taper 1:8-M10 50 [442]
BB
Taper 1:8-M7-shaft for short
BG
version
Tang 5x Ø10 14 [124]
CA
Tang 5x Ø11,5 distance from
CD
gear face 47,5
Tang 6,63x Ø11 21 [186]
CE
Tang 5x Ø11,5 distance from
CF
gear face 35
Tang 5x Ø10-type 03 + w/o
CM
coupling
Splined Z15-m0,75-alfa 30°-L14 35 [309]
DA
Splined Z15-m0,75-alfa 30°-L14 35 [309]
DB
Splined B12x9-L14-flange
DC
protrusion sb22-Z6-m1,60- alfa
30°
Splined B12x9-L20-flange
DD
protrusion sb40-Z6-m1,75- alfa
30°
Parallel Ø12-Thread M10x1 24 [212]
FA
Parallel Ø12,7-Key 3.2 32 [283]
GA
SAE spline J498-9T-20/40 34 [301] 34 [301]
SA
SAE spline J498-8T-16/32-shaft
SG
for short version
21 [186]
30 [265]
25 [221]
17 [150]
14 [124]
30 [265]
34 [301]
Danfoss recommends mating splines conform to SAE J498 or DIN 5482.
Danfoss 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.
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.
Various port configurations are available on Group 1 pumps. They include:
32 | © Danfoss | October 2019 BC320173499791en-000101
g
C
B
D
F
E
h
(4 holes min. full thd.
10 [0.394] deep)
a
c
i
d
b
45o
(4 holes min. full thd.
10 [0.394] deep)
f
e
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Options
•
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)
For a table of dimensions, see Ports on page 33.
Inlet/Outlet port configurations
A B C D E F G H I J K L M N O
/ ● ● ● ● /
Ports
B1
B2
C1
C2
C3
D3
D5
D7
E3
E4
E5
F2
F3
F4
H5
H7
Available ports
8x30xM6
Flanged port with threaded holes in X pattern, in center of body
13x30xM6
8x26xM5
Flanged port with threaded holes in + pattern (European standard ports)
12x26xM5
13,5x30xM6
M14x1,5
Threaded metric port
M18x1,5
M22x1,5
9∕16-18UNF
Threaded SAE, O-Ring boss port
¾ -16UNF
7∕8-14UNF
¼ GAS Threaded GAS (BSPP) port
3∕8 GAS
½ GAS
M18x1,5 Threaded metric port ISO 6149
M22x1,5
©
Danfoss | October 2019 BC320173499791en-000101 | 33
C
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
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
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
1,2
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
1,7
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
2,2
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
2,6
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
3,2
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
3,8
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
4,3
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
6,0
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
7,8
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
010
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)
Inlet 13 [0.512] 30 [1.181] M6 12 [0.462] 26 [1.024] M5 M18x1.5 ¾–16UNF–2B 3/8 Gas (BSPP)
012
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)
SNP1IN
Danfoss 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.
Caution
When the relief valve is operating in bypass condition, rapid heat generation occurs. If this bypass
condition continues, the pump prematurely fails. The reason for this is that it is a rule, not an exception.
34 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Options
Valve performance graph
Dimensions
For configuration 06 (SAE A-A) dimension B and V have to be increased 4.5 mm [0.177 in].
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]
95.5
B
[3.760]97[3.819]99[3.989]
85.0
[3.346]
86.5
[3.406]
V
88.5
[3.484]
101
[3.976]
90.5
[3.563]
103
[4.055]
92.5
[3.642]
105
[4.134]
94.5
[3.720]
107
[4.213]
96.5
[3.799]
113.5
[4.468]
103.0
[4.055]
120
[4.724]
109.5
[4.311]
129
[5.079]
118.5
[4.665]
137
[5.394]
126.5
[4.980]
Variant codes for ordering integral relief valves
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 O
/ / ● ● ●
©
Danfoss | October 2019 BC320173499791en-000101 | 35
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Options
Code
A Not defined
C 500
E 1000
F 1250
G 1500
K 2000
I 2250
L 2500
M 2800
N 3000
O 3250
Code
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]
Pump speed for RV setting
min-1 (rpm)
Pressure setting
bar [psi]
36 | © Danfoss | October 2019 BC320173499791en-000101
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Product Options
Integral relief valve schematic
Valve schematic
©
Danfoss | October 2019 BC320173499791en-000101 | 37
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
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Dimensions
SNP1NN - 01BA and 01DA
This drawing shows the standard porting for 01BA and 01DA. Available in Series SNP1NN only.
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
Inlet/Outlet
Model code examples and maximum shaft torque
A
37.75
[1.486]
B
79.5
[3.130]
C/c 12 [0.472]
D/d 26 [1.024]
E/e M5
38.5
[1.516]
81.0
[3.189]
39.5
[1.555]
83.0
[3.268]
40.5
[1.634]
85.0
[3.346]
41.5
[1.634]
87.0
[3.425]
42.5
[1.673]
89.0
[3.504]
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.
43.5
[1.713]
91.0
[3.583]
46.75
[1.841]
97.5
[3.839]
50.0
[1.969]
104.0
[4.094]
38 | © Danfoss | October 2019 BC320173499791en-000101
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
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Dimensions
SKP1NN – 02BB and 02FA
This drawing shows the standard porting for 02BB and 02FA. Available in Series SKP1NN only.
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
Inlet/Outlet
Model code examples and maximum shaft torque
A
37.75
[1.486]
B
79.5
[3.130]
C/c 12 [0.472]
D/d 26 [1.024]
E/e M5
38.5
[1.516]
81.0
[3.189]
39.5
[1.555]
83.0
[3.268]
40.5
[1.634]
85.0
[3.346]
41.5
42.5
[1.634]
[1.673]
87.0
89.0
[3.425]
[3.504]
43.5
[1.713]
91.0
[3.583]
46.75
[1.841]
97.5
[3.839]
50.0
[1.969]
104.0
[4.094]
54.5
[2.146]
113.0
[4.449]
Flange/drive gear Model code example Maximum shaft torque
©
Danfoss | October 2019 BC320173499791en-000101 | 39
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.
58.5
[2.303]
121.0
[4.764]
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
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Dimensions
SNP1NN – 03CA
This drawing shows the standard porting for 03CA.
SNP1NN – 03CA dimensions
Frame size 1,2 1,7 2,2 2,6 3,2 3,8 4,3 6,0 7,8
Dimension
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
A
B
37.75
[1.486]
70
[2.756]
38.5
[1.516]
71.5
[2.815]
SNP1NN/1,7RN03CA03D5D3NNNN/NNNNN
39.5
[1.555]
73.5
[2.894]
40.5
[1.634]
75.5
[2.972]
41.5
[1.634]
77.5
[3.051]
42.5
[1.673]
79.5
[3.130]
43.5
[1.713]
81.5
[3.209]
14 N•m [124 lb•in]
46.75
[1.841]50[1.969]
88.0
[3.465]
For further details ordering, see Model code.
40 | © Danfoss | October 2019 BC320173499791en-000101
94.5
[3.720]
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
Technical Information
Gear Pumps Group 0 and Group 1 Technical Information
Dimensions
SKP1NN – 06GA and 06SA
This drawing shows the standard porting for 06GA and 06SA. Available in Series SKP1NN only.
©
Danfoss | October 2019 BC320173499791en-000101 | 41
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]
B
84
[3.307]
Inlet C ¾–16UNF–2B, THD 14.3 [0.563] deep
Outlet c 9/16–18UNF–2B, THD 12.7 [0.500] deep
Flange/drive gear Model code example Maximum shaft torque
85.5
[3.366]
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.
45.0
[1.772]
87.5
[3.445]
89.5
[3.524]
46.0
[1.811]47[1.850]48[1.890]
91.5
93.5
[3.602]
[3.681]
51.25
[2.018]
95.5
[3.760]
102
[4.016]
54.5
[2.146]59[2.323]
108.5
117.5
[4.272]
[4.626]
63.5
[2.50]
125.5
[4.941]
Danfoss
Power Solutions GmbH & Co. OHG
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Phone: +49 4321 871 0
Danfoss
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Shanghai, China 201206
Phone: +86 21 2080 6201
Products we offer:
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www.hydro-gear.com
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•
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•
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•
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•
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•
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•
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Hydrostatic pumps
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Position controls and
•
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Telematics
•
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
electric components. We specialize in providing state-of-the-art technology and solutions
that excel in the harsh operating conditions of the mobile off-highway market as well as the
marine sector. Building on our extensive applications expertise, we work closely with you to
ensure exceptional performance for a broad range of applications. We help you and other
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Danfoss Power Solutions – your strongest partner in mobile hydraulics and mobile
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©
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