Revision History Table of Revisions
Date Changed Rev
Feb 2014 Converted to Danfoss layout - DITA CMS BA
Nov 2012 Planetary Gears deleted AI
Oct 2011 Dimensions added to drawing AH
May 2011 Typos AG
Sep 2010 New back page AF
Mar 2010 Japan location AE
Jul 2008 Text AC
Apr 2008 Pictures, drawings and text AB
Technical Information OML and OMM Orbital Motors
2 520L0346 • Rev BA • Feb 2014
A wide range of Orbital Motors
Characteristic, features and application areas of Orbital Motors....................................................................................5
Characteristic features of Danfoss Orbital Motors.......................................................................................................... 5
Technical features of Danfoss Orbital Motor.....................................................................................................................5
The Danfoss Orbital Motors are used in the following application areas:..............................................................6
Survey of literature with technical data on Danfoss Orbital Motors..............................................................................6
Speed, torque and output
Speed, torque and output.............................................................................................................................................................7
OML
Versions
OML versions......................................................................................................................................................................................9
Code numbers...................................................................................................................................................................................9
Ordering......................................................................................................................................................................................... 9
Technical data
Technical data for OML with 16 mm and 5/8 in cylindrical shaft................................................................................. 10
Shaft seal
Max. permissible shaft seal pressure.......................................................................................................................................11
Oil flow
Direction of shaft rotation...........................................................................................................................................................12
Shaft load
Permissible shaft loads for OML............................................................................................................................................... 13
Function diagrams
Function diagrams.........................................................................................................................................................................14
OML 8 function diagram........................................................................................................................................................14
OML 12.5 function diagram..................................................................................................................................................15
OML 20 function diagram......................................................................................................................................................15
OML 32 function diagram......................................................................................................................................................16
Shaft
Shaft version.................................................................................................................................................................................... 17
Port
Port thread versions......................................................................................................................................................................18
Dimensions, OML end port, European version
OML end port, European version............................................................................................................................................. 19
Weight and dimensions......................................................................................................................................................... 19
Dimensions, OML end port, US version
OML end port, US version...........................................................................................................................................................21
Weight and dimensions......................................................................................................................................................... 21
OMM
Versions
OMM versions..................................................................................................................................................................................24
Code numbers.................................................................................................................................................................................24
Ordering.......................................................................................................................................................................................24
Technical data
Technical data for OMM with 16 mm and 5/8 in cylindrical shaft................................................................................25
Shaft seal
Max. permissible shaft seal pressure.......................................................................................................................................26
Oil flow
Direction of shaft rotation...........................................................................................................................................................27
Technical Information
OML and OMM Orbital Motors
Contents
520L0346 • Rev BA • Feb 2014 3
Shaft load
Permissible shaft loads for OMM..............................................................................................................................................28
Function diagrams
Function diagrams.........................................................................................................................................................................29
OMM 8 function diagram.......................................................................................................................................................29
OMM 12.5 function diagram.................................................................................................................................................29
OMM 20 function diagram....................................................................................................................................................30
OMM 32 function diagram....................................................................................................................................................30
OMM 50 function diagram....................................................................................................................................................31
Shaft
Shaft version.................................................................................................................................................................................... 32
Port
Port thread versions......................................................................................................................................................................33
Dimensions, OMM end port, European version
OMM end port, European version............................................................................................................................................34
Weight and dimensions......................................................................................................................................................... 35
Dimensions, OMM end port, US version
OMM end port, US version..........................................................................................................................................................36
Weight and dimensions......................................................................................................................................................... 37
Dimensions, OMM side port, European version
OMM side port, European version........................................................................................................................................... 38
Weight and dimensions......................................................................................................................................................... 39
Dimensions, OMM side port, US version
OMM side port, US version.........................................................................................................................................................40
Weight and dimensions......................................................................................................................................................... 41
Accessories
2 bolt flange kit, code no. 151G0211......................................................................................................................................42
Hydraulic systems
Installation of the Danfoss Orbital Motors............................................................................................................................43
About the design......................................................................................................................................................................43
About the assembly.................................................................................................................................................................43
Starting up and running in the hydraulic system...............................................................................................................43
Operation..........................................................................................................................................................................................43
Maintenance....................................................................................................................................................................................44
Technical Information
OML and OMM Orbital Motors
Contents
4 520L0346 • Rev BA • Feb 2014
Characteristic, features and application areas of Orbital Motors
Danfoss is a world leader within production of low speed orbital motors with high torque. We can offer
more than 3000 different orbital motors, categorised in types, variants and sizes (incl. different shaft
versions).
The motors vary in size (rated displacement) from 8 cm³ [0.50 in³] to 800 cm³ [48.9 in³] per revolution.
Speeds range up to approx. 2500 min
-1
(rpm) for the smallest type and up to approx. 600 min
-1
(rpm) for
the largest type.
Maximum operating torques vary from 13 N•m [115 lbf•in] to 2700 N•m [24.000 lbf•in] (peak) and
maximum outputs are from 2.0 kW [2.7 hp] to 70 kW [95 hp].
Characteristic features of Danfoss Orbital Motors
•
Smooth running over the entire speed range
•
Constant operating torque over a wide speed range
•
High starting torque
•
High return pressure without the use of drain line (High pressure shaft seal)
•
High efficiency
•
Long life under extreme operating conditions
•
Robust and compact design
•
High radial and axial bearing capacity
•
For applications in both open and closed loop hydraulic systems
•
Suitable for a wide variety of hydraulics fluids
Technical features of Danfoss Orbital Motor
The programme is characterised by technical features appealing to a large number of applications and a
part of the programme is characterised by motors that can be adapted to a given application. Adaptions
comprise the following variants among others:
Technical Information
OML and OMM Orbital Motors
A wide range of Orbital Motors
520L0346 • Rev BA • Feb 2014 5
•
Motors with corrosion resistant parts
•
Wheel motors with recessed mounting flange
•
OMP, OMR- motors with needle bearing
•
OMR motor in low leakage version
•
OMR motors in a super low leakage version
•
Short motors without bearings
•
Ultra short motors
•
Motors with integrated positive holding brake
•
Motors with integrated negative holding brake
•
Motors with integrated flushing valve
•
Motors with speed sensor
•
Motors with tacho connection
•
All motors are available with black finish paint
The Danfoss Orbital Motors are used in the following application areas:
•
Construction equipment
•
Agricultural equipment
•
Material handling & Lifting equipment
•
Forestry equipment
•
Lawn and turf equipment
•
Special purpose
•
Machine tools and stationary equipment
•
Marine equipment
Survey of literature with technical data on Danfoss Orbital Motors
Detailed data on all Danfoss Orbital Motors can be found in our motor catalogue, which is divided into
more individual subcatalogues:
•
General information on Danfoss Orbital Motors: function, use, selection of orbital motor, hydraulic
systems, etc.
•
Technical data on small motors: OML and OMM
•
Technical data on medium sized motors: OMP, OMR, OMH
•
Technical data on medium sized motors: DH and DS
•
Technical data on medium sized motors: OMEW
•
Technical data on medium sized motors: VMP
•
Technical data on medium sized motors: VMR
•
Technical data on large motors: OMS, OMT and OMV
•
Technical data on large motors: TMT
•
Technical data on large motors: TMV
A general survey brochure on Danfoss Orbital Motors gives a quick motor reference based on power,
torque, speed and capabilities.
Technical Information
OML and OMM Orbital Motors
A wide range of Orbital Motors
6 520L0346 • Rev BA • Feb 2014
Speed, torque and output
The following bar diagrams, are useful for a quick selection of relevant motor size for the application. The
final motor size can be determined by using the function diagram for each motor size.
•
OML can be found under function diagrams.
•
OMM can be found under function diagrams.
The function diagrams are based on actual tests on a representative number of motors from our
production. The diagrams apply to a return pressure between 5 and 10 bar [75 and 150 psi] when using
mineral based hydraulic oil with a viscosity of 35 mm²/s [165 SUS] and a temperature of 50°C [120°F]. For
further explanation concerning how to read and use the function diagrams, please consult the paragraph
"Selection of motor size" in the technical information "General" DKMH.PK.100.G2.02 520L0232.
P301 016
Technical Information OML and OMM Orbital Motors
Speed, torque and output
520L0346 • Rev BA • Feb 2014 7
Technical Information OML and OMM Orbital Motors
OML
8 520L0346 • Rev BA • Feb 2014
OML versions
Mounting Shaft Port size European
version
US
version
Side port
version
End port
version
Standard
shaft seal
Drain
connection
Check
valve
Main type
designation
Config.
code
Front‚
4 × M5
Cyl. 16 mm G 1/4 X X X No Yes
OML
1
Front‚ 4 ×
10-32 UNF
Cyl. 5/8 in 7/16 - 20 UNF X X X No Yes
OML
2
Features available (options) :
Painted
Code numbers
Config. code Code number - displacement (cm³)
8 12.5 20 32
1 2001 2002 2003 2004
2 2021 2022 2023 2024
Ordering
Add the four digit prefix “151G” to the four digit numbers from the chart for complete code number.
Example:
151G2001 for an OML 8 with front mounting (4 × M5), cyl. 16 mm shaft and port size G 1/4.
Orders will not be accepted without the four digit prefix.
Technical Information
OML and OMM Orbital Motors
Versions
520L0346 • Rev BA • Feb 2014 9
Technical data for OML with 16 mm and 5/8 in cylindrical shaft
Type OML OML OML OML
Motor Size 8 12.5 20 32
Geometric displacement cm³
[in³]
8.0
[0.49]
12.5
[0.77]
20.0
[1.22]
32.0
[1.96]
Max. speed min
-1
[rpm]
cont. 2000 1280 800 500
int.
1)
2500 1600 1000 625
Max. torque Nm
[lbf•in]
cont. 7
[60]
11
[100]
18
[160]
29
[260]
int.
1)
13
[120]
20
[180]
32
[280]
51
[450]
Max. output kW
[hp]
cont. 1.1
[1.5]
1.1
[1.5]
1.1
[1.5]
1.1
[1.5]
int.
1)
2.0
[2.7]
2.0
[2.7]
2.0
[2.7]
2.0
[2.7]
Max. pressure drop
bar
[psi]
cont. 70
[1020]
70
[1020]
70
[1020]
70 (55)
3
[1020] [800]
3
int.
1)
125
[1810]
125
[1810]
125 (85)
3
[1810] [800]3
125 (55)
3
[1810] [800]3
peak
2)
140
[2030]
140
[2030]
125 (85)
3
[2030] [1230]3
140 (55)
3
[2030] [800]
3
Max. oil flow l/min
[US gal/min]
cont. 16
[4.2]
16
[4.2]
16
[4.2]
16
[4.2]
int.
1)
20
[5.3]
20
[5.3]
20
[5.3]
20
[5.3]
Max. starting pressure with
unloaded shaft
bar
[psi]
4
[60]
4
[60]
4
[60]
6
[90]
Min. starting torque at max. press. drop cont.
Nm [lbf•in]
5
[45]
9
[80]
15
[135]
24
[210]
at max. press. drop int.
1)
Nm [lbf•in]
10
[90]
16
[140]
27
[240]
42
[370]
Min. speed
4)
min
-1
[rpm]
50 50 50 50
Type Max. inlet pressure
OML 8 - 32 bar [psi] cont. 125 [1810]
int.
1)
140 [2030]
peak
2)
140 [2030]
1)
Intermittent operation: the permissible values may occur for max. 10% of every minute.
2)
Peak load: the permissible values may occur for max. 1% of every minute.
3)
Max. pressure drop in applications with a large moment of inertia and frequent stops or reversings.
4)
Operation at lower speed may be slightly less smooth.
Technical Information
OML and OMM Orbital Motors
Technical data
10 520L0346 • Rev BA • Feb 2014
Max. permissible shaft seal pressure
OML has incorporated check valves
which ensure that the pressure on theshaft seal
never exceeds the pressure in the returnline.
Max. return pressure (max. pressure on shaft seal)
Pressure Drop in Motor
The curve applies to an unloaded motor shaft and an oil viscosity of 35 mm²/s [165 SUS]
Technical Information
OML and OMM Orbital Motors
Shaft seal
520L0346 • Rev BA • Feb 2014 11
Direction of shaft rotation
Technical Information OML and OMM Orbital Motors
Oil flow
12 520L0346 • Rev BA • Feb 2014
Permissible shaft loads for OML
The permissible radial shaft load (P
rad.
) is calculated from the distance (I) between the point of load and
the mounting surface:
The drawing shows the permissible radial load when I = 15 mm [0.59 in].
The calculated shaft load should never exceed the permissible value.
15[.59]
151-1314.10
rad.
P
[238 lbf]
[180 lbf]
ax.
P
=1060 N
=800 N
Technical Information OML and OMM Orbital Motors
Shaft load
520L0346 • Rev BA • Feb 2014 13
Function diagrams
Explanation of function diagram use, basis and conditions can be found under Speed, torque and output.
•
A: Continuous range
•
B: Intermittent range (max. 10% operation every minute)
Max. permissible continuous/intermittent pressure drop for the actual shaft version can be found under
Technical data.
Intermittent pressure drop and oil flow must not occur simultaneously.
OML 8 function diagram
Technical Information OML and OMM Orbital Motors
Function diagrams
14 520L0346 • Rev BA • Feb 2014
OML 12.5 function diagram
OML 20 function diagram
Technical Information OML and OMM Orbital Motors
Function diagrams
520L0346 • Rev BA • Feb 2014 15
OML 32 function diagram
Technical Information OML and OMM Orbital Motors
Function diagrams
16 520L0346 • Rev BA • Feb 2014
Shaft version
A: Cylindrical shaft
16 mm
C: Parallel key
A5 × 5 × 16
DIN 6885
A
P301 709
C
28 [1.10]
29 [1.14]
45˚
A
A
A-A
ø16.006 [0.630]
ø15.995 [0.630]
M6
R0.5 [0.020]
4.5 [0.177]
3.5 [0.138]
5 [0.20]
14 [0.55]
16.5 [0.650]
16.2 [0.638]
ø17 [0.67]
17.87 [0.704]
18 [0.71]
4.97 [0.196]
5 [0.20]
US version
B: Cylindrical shaft
5/8”
D: Parallel key
3/16 × 3/16 × 3/4 in
B.S. 46
B
P301 710
B
ø17 [0.67]
R0.5 [0.020]
1[0.04]x45˚
28 [1.10]
29 [1.14]
ø7 [0.28]
ø15.850 [0.624]
ø15.875 [0.625]
28UNF-2B
1
4
A
14 [0.55]
3.5 [0.138]
4.5 [0.177]
5 [0.20]
A
19.05[0.750]
19.35[0.762]
4.80 [0.190]
4.77 [0.188]
17.90 [0.705]
17.77 [0.700]
A-A
D
Technical Information OML and OMM Orbital Motors
Shaft
520L0346 • Rev BA • Feb 2014 17
Port thread versions
A
max.ø21.5 [0.846]
C
P301 707
max.1.0 [0.04]
min.12 [0.47]
D
B
min.12 [0.47]
max.1.0 [0.04]
P301 708
max.ø21.5 [0.846]
A: G main ports
C: ISO 228/1 - G1/4
B: UNF main ports
D: 7/16 - 20 UNF
O-ring boss port
Technical Information OML and OMM Orbital Motors
Port
18 520L0346 • Rev BA • Feb 2014
OML end port, European version
45˚
ø36 [1.42]
ø45.05 [1.774]
max.32.2
5[0.20]
L
L
1
151-1315.10
3.8 [0.150]
11.5 [0.453]
11.5 [0.453]
ø21 [0.83]
D
0.5[0.020]
[1.268]
ø44.95 [1.760]
3.6 [0.138]
11.3 [0.445]
11.3 [0.445]
max. ø45.1 [1.776]
C
0.8[0.031]
C: M5; 15 mm [0.59 in] deep
D: G 1/4; 12 mm [0.47 in]
Weight and dimensions
Type Length
L
max.
L
1
mm [in]
Weight
kg [lb]
OML 8 102.5 [4.04] 4.1 [0.16] 1.0 [2.2]
OML 12.5 104.8 [4.13] 6.4 [0.25] 1.0 [2.2]
Technical Information OML and OMM Orbital Motors
Dimensions, OML end port, European version
520L0346 • Rev BA • Feb 2014 19
Type Length
L
max.
L
1
mm [in]
Weight
kg [lb]
OML 20 108.6 [4.28] 10.2 [0.40] 1.1 [2.4]
OML 32 114.7 [4.53] 16.3 [0.64] 1.2 [2.6]
Technical Information OML and OMM Orbital Motors
Dimensions, OML end port, European version
20 520L0346 • Rev BA • Feb 2014
OML end port, US version
45˚
ø36 [1.42]
max. ø45.1 [1.776]
ø45.05 [1.774]
max.32.2
5 [0.20]
L
L
1
151-1315.10.22
3.8 [0.150]
11.5 [0.453]
11.5 [0.453]
0.8 [0.031]
ø21 [0.83]
C
D
0.5 [0.020]
[1.268]
ø44.95 [1.760]
3.6 [0.138]
11.3 [0.445]
11.3 [0.445]
C: 10 - 32 UNF; 15 mm [0.59 in] deep
D: 7⁄16 - UNF; 12 mm [0.47 in] deep
Weight and dimensions
Type Length
L
max.
L
1
mm [in]
Weight
kg [lb]
OML 8 102.5 [4.04] 4.1 [0.16] 1.0 [2.2]
OML 12.5 104.8 [4.13] 6.4 [0.25] 1.0 [2.2]
Technical Information OML and OMM Orbital Motors
Dimensions, OML end port, US version
520L0346 • Rev BA • Feb 2014 21
Type Length
L
max.
L
1
mm [in]
Weight
kg [lb]
OML 20 108.6 [4.28] 10.2 [0.40] 1.1 [2.4]
OML 32 114.7 [4.53] 16.3 [0.64] 1.2 [2.6]
Technical Information OML and OMM Orbital Motors
Dimensions, OML end port, US version
22 520L0346 • Rev BA • Feb 2014
Technical Information OML and OMM Orbital Motors
OMM
520L0346 • Rev BA • Feb 2014 23
OMM versions
Mounting Shaft Port size European
version
US
version
Side port
version
End port
version
Standard
shaft seal
Drain
connection
Check
valve
Main type
designation
Config.
code
Front;
3 × M6
Cyl. 16 mm G 3/8 X X X Yes Yes OMM 1
G 3/8 X X X Yes Yes OMM 2
Front;
3 × 1/4 -
28 UNF
Cyl. 5/8 in 9/16-18 UNF X X X Yes Yes OMM 3
9/16-18 UNF X X X Yes Yes OMM 4
Front;
3 × M6
Splined
B17×14
G 3/8 X X X Yes Yes OMM 5
G 3/8 X X X Yes Yes OMM 6
Features available (options) :
Speed sensor
Reverse rotation
Corrosion protected
Painted
2 bolt flange kit (Code no 151G0211)
Code numbers
Config. code Code numbers, displacement (cm³)
8 12.5 20 32 40 50
1 0040 0001 0002 0003 0277 0037
2 0041 0004 0005 0006 0279 0013
3
0048 0031 0032 0033 - 5032
4 0049 0034 0035 0036 - 0094
5 0046 0024 0025 0026 - -
6 0047 0027 0028 0029 0294 -
Ordering
Add the four digit prefix “151G” to the four digit numbers from the chart for complete code number.
Example:
151G0035 for an OMM 20 with front mounting (3 × 1/4 - 28 UNF), cyl. 5/8 in shaft and port size 9/16 - 18
UNF.
Orders will not be accepted without the four digit prefix.
Technical Information
OML and OMM Orbital Motors
Versions
24 520L0346 • Rev BA • Feb 2014
Technical data for OMM with 16 mm and 5/8 in cylindrical shaft
Type OMM OMM OMM OMM OMM OMM
Motor size 8 12.5 20 32 40 50
Geometric displacement cm³
[in³]
8.2
[0.50]
12.5
[0.77]
19.9
[1.22]
31.6
[1.93]
39.8
[2.43]
50
[3.08]
Max. speed min
-1
cont. 1950 1550 1000 630 500 400
[rpm] int.
1)
2450 1940 1250 800 630 500
Max. torque Nm
[lbf•in]
cont. 11
[95]
16
[140]
25
[220]
40
[350]
45
[400]
46
[410]
int.
1)
15
[135]
23
[200]
35
[310]
57
[500]
70
[620]
88
[780]
Max. output kW
[hp]
cont. 1.8
[2.4]
2.4
[3.2]
2.4
[3.2]
2.4
[3.2]
2.2
[3.0]
1.8
[2.4]
int.
1)
2.6
[3.5]
3.2
[4.3]
3.2
[4.3]
3.2
[4.3]
3.2
[4.3]
3.2
[4.3]
Max. pressure drop bar
[psi]
cont. 100
[1450]
100
[1450]
100
[1450]
100
[1450]
90
[1310]
70
[1020]
int.
1)
140
[2030]
140
[2030]
140
[2030]
140
[2030]
140
[2030]
140
[2030]
peak
2)
200
[2900]
200
[2900]
200
[2900]
160
[2320]
160
[2320]
160
[2320]
Max. oil flow l/min
[US gal/min]
cont. 16
[4.2]
20
[5.3]
20
[5.3]
20
[5.3]
20
[5.3]
20
[5.3]
int.
1)
20
[5.3]
25
[6.6]
25
[6.6]
25
[6.6]
25
[6.6]
25
[6.6]
Max. starting pressure with
unloaded shaft
bar
[psi]
4
[60]
4
[60]
4
[60]
4
[60]
4
[60]
4
[60]
Min. starting torque at max. press. drop cont.
Nm [lbf•in]
7
[60]
12
[105]
21
[185]
34
[300]
38
[335]
41
[365]
at max. press. drop int.
1)
Nm [lbf•in]
10
[90]
17
[150]
29
[255]
48
[425]
62
[550]
79
[700]
Min. speed
3)
min
-1
[rpm]
50 40 30 30 30 30
Type Max. inlet pressure
OMM 8 - 50 bar
[psi]
cont. 140 [2030]
int.
1)
175 [2538]
peak
2)
225 [3260]
1)
Intermittent operation: the permissible values may occur for max. 10% of every minute.
2)
Peak load: the permissible values may occur for max. 1% of every minute.
3)
Operation by lower speeds may be slightly less smooth.
Technical Information
OML and OMM Orbital Motors
Technical data
520L0346 • Rev BA • Feb 2014 25
Max. permissible shaft seal pressure
OMM with check valves and without use of drain
connection:
OMM with check valves and drain connection:
The pressure on the shaft seal never exceeds the
pressure in the return line.
The shaft seal pressure equals the pressure on the
drain line.
151-320.10
Max. return pressure without drain line or max. pressure in drain line
Pressure drop in motor
The curve applies to an unloaded motor shaft and an oil viscosity of 35 mm²/s [165 SUS]
Technical Information
OML and OMM Orbital Motors
Shaft seal
26 520L0346 • Rev BA • Feb 2014
Direction of shaft rotation
B
A
B
A
P301 008
Technical Information OML and OMM Orbital Motors
Oil flow
520L0346 • Rev BA • Feb 2014 27
Permissible shaft loads for OMM
The permissible radial shaft load (Prad.) is calculated from the distance (I) between the point of load and
the mounting surface:
The drawing shows the permissible radial load when I = 20 mm [0.79 in].
The calculated shaft load should never exceed the permissible value.
151-980.11
20 [0.79]
P
rad.
= 1600 N
[360 lbf]
P
ax.
= 800 N
[180 lbf]
Technical Information OML and OMM Orbital Motors
Shaft load
28 520L0346 • Rev BA • Feb 2014
Function diagrams
Explanation of function diagram use, basis and conditions can be found under Speed, torque and output.
•
LIght grey: Continuous range
•
Light red: Intermittent range (max. 10% operation every minute)
Max. permissible continuous/intermittent pressure drop for the actual shaft version can be found under
Technical data.
Intermittent pressure drop and oil flow must not occur simultaneously.
OMM 8 function diagram
OMM 12.5 function diagram
Technical Information
OML and OMM Orbital Motors
Function diagrams
520L0346 • Rev BA • Feb 2014 29
OMM 20 function diagram
OMM 32 function diagram
Technical Information OML and OMM Orbital Motors
Function diagrams
30 520L0346 • Rev BA • Feb 2014
OMM 50 function diagram
2kW
300
0
0
10
50
20
30
40
100 150
0.5kW
0.25kW
200
n
t
70%
250
60%
65%
=50%
n
t
=75%
OMM 50
Q=3 l/min
50
60
70
90
80
15 l/min
10 l/min
5 l/min
1kW
400350 450 500
p= 30 bar
50 bar
70 bar
Q=25 l/min
20 l/min
N=3kW
p=140 bar
100 bar
125 bar
0.8 US gal/min
1.3 US gal/min
2.6 US gal/min
4.0 US gal/min
5.3 US gal/min
6.6 US gal/min
1810 psi
2030 psi
1450 psi
1020 psi
730 psi
440 psi
(rpm)
min
-1
151-1660.11
lbf•in
Nm
0
800
700
500
600
100
400
200
300
N=
0.25 hp
N=
0.5hp
1hp
2hp
N=3hp
D
D
Technical Information OML and OMM Orbital Motors
Function diagrams
520L0346 • Rev BA • Feb 2014 31
Shaft version
A: Cylindrical shaft 16 mm [0.63
in]
D: Parallel key
A5 • 5 • 16
DIN 6885
P301 704
D
A
28 [1.10]
29 [1.14]
45˚
A
A
A-A
ø16.006 [0.630]
ø15.995 [0.630]
M6
R0.5 [0.020]
4.5 [0.177]
3.5 [0.138]
5 [0.20]
14 [0.55]
16.5 [0.650]
16.2 [0.638]
ø17 [0.67]
17.87 [0.704]
18 [0.71]
4.97 [0.196]
5 [0.20]
US version
B: Cylindrical shaft
5/8 in
E: Parallel key
3/16 • 3/16 • 3/4 in
B.S. 46
P301 705
B
ø17 [0.67]
R0.5(.020)
1[0.04)x45˚
28 [1.10]
29 [1.14]
ø7 [0.28]
ø15.850 [0.624]
ø15.875 [0.625]
28UNF-2B
1
4
A
14 [0.55]
3.5 [0.138]
4.5 [0.177]
5 [0.20]
A
19.05 [0.750]
19.35 [0.762]
4.80 [0.190]
4.77 [0.188]
17.90 [0.705]
17.77 [0.700]
A-A
E
C: Involute splined shaft
B17 • 14, DIN 5482
Measurement 19.641 ± 0.04 mm
over 3 mm pins deviates from
DIN 5482
P301 706
ø17 [0.67]
C
A-A
R0.5 [0.020]
45˚
29 [1.14]
28 [1.10]
M6
ø16.39 [0.645]
ø16.5 [0.650]
A
A
5 [0.20]
14 [0.55]
14 [0.55]
16 [0.63]
Technical Information OML and OMM Orbital Motors
Shaft
32 520L0346 • Rev BA • Feb 2014
Port thread versions
P301 700
E
A
ø25 [0.98]
ø25.4 [1.000]
min. 12 [0.47]
1.0 [0.039]
0.5 [0.020]
P301 701
ø25.4 [1.000]
F
ø25 [0.98]
B
min. 12.7 [0.500]
0.5 [0.020]
1.0 [0.039]
A: G main ports
E: ISO 228/1 - G3/8
B: UNF main ports
F: 9/16 - 18 UNF O-ring boss port
P301 702
1.0 [0.039]
0.5 [0.020]
ø15.4 [0.606]
ø15 [0.59]
G
min.8 [0.31]
C
P301 703
1.0 [0.039]
ø19.4 [0.764]
0.5 [0.020]
ø19 [0.75]
H
min.10 [0.39]
D
C: G drain ports
G: ISO 228/1 - G1/8
D: UNF drain ports
H: 3/8 - 24 UNF O-ring port
Technical Information OML and OMM Orbital Motors
Port
520L0346 • Rev BA • Feb 2014 33
OMM end port, European version
P301 008
C: M6; 10 mm [0.39 in] deep
D: G 3⁄8; 12 mm [0.47 in] deep
E: Drain connection G 1⁄8; 8 mm [0.39 in] deep
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM end port, European version
34 520L0346 • Rev BA • Feb 2014
Weight and dimensions
Type Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8 104.0 [4.09] 3.5 [0.14] 1.9 [4.2]
OMM 12.5 106.0 [4.17] 5.5 [0.22] 2.0 [4.4]
OMM 20 109.0 [4.29] 8.5 [0.33] 2.1 [4.6]
OMM 32 114.0 [4.49] 13.5 [0.53] 2.2 [4.8]
OMM 40 118.0 [4.65] 17.0 [0.67] 2.3 [5.1]
OMM 50 122.0 [4.80] 21.5 [0.85] 2.4 [5.3]
Technical Information OML and OMM Orbital Motors
Dimensions, OMM end port, European version
520L0346 • Rev BA • Feb 2014 35
OMM end port, US version
P301 008
C: 1/ 4 - 28 UNF - 2B; min. 10 mm [0.39 in] deep
D: 9⁄16 - 18 UNF; 12 mm [0.47 in] deep O-ring boss port
E: 3⁄8 - 24 UNF; 8 mm [0.39 in] deep O-ring port
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM end port, US version
36 520L0346 • Rev BA • Feb 2014
Weight and dimensions
Type Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8 104.0 [4.09] 3.5 [0.14] 1.9 [4.2]
OMM 12.5 106.0 [4.17] 5.5 [0.22] 2.0 [4.4]
OMM 20 109.0 [4.29] 8.5 [0.33] 2.1 [4.6]
OMM 32 114.0 [4.49] 13.5 [0.53] 2.2 [4.8]
OMM 50 122.0 [4.80] 21.5 [0.85] 2.4 [5.3]
Technical Information OML and OMM Orbital Motors
Dimensions, OMM end port, US version
520L0346 • Rev BA • Feb 2014 37
OMM side port, European version
P301 010
max 61.5 (2.421)
C: M6; 10 mm [0.39 in] deep
D: G 3⁄8; 12 mm [0.47 in] deep
E: Drain connection G 1⁄8; 8 mm [0.39 in] deep
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM side port, European version
38 520L0346 • Rev BA • Feb 2014
Weight and dimensions
Type Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8 104.0 [4.09] 3.5 [0.14] 1.9 [4.2]
OMM 12.5 106.0 [4.17] 5.5 [0.22] 2.0 [4.4]
OMM 20 109.0 [4.29] 8.5 [0.33] 2.1 [4.6]
OMM 32 114.0 [4.49] 13.5 [0.53] 2.2 [4.8]
OMM 40 118.0 [4.65] 17.0 [0.67] 2.3 [5.1]
OMM 50 122.0 [4.80] 21.5 [0.85] 2.4 [5.3]
Technical Information OML and OMM Orbital Motors
Dimensions, OMM side port, European version
520L0346 • Rev BA • Feb 2014 39
OMM side port, US version
P301 010
max 61.5 (2.421)
C: 1/ 4 - 28 UNF - 2B; min. 10 mm [0.39 in] deep
D: 9⁄16 - 18 UNF ; 12 mm [0.47 in] deep
E: 3⁄8 - 24 UNF ; 8 mm [0.39 in] deep
Technical Information
OML and OMM Orbital Motors
Dimensions, OMM side port, US version
40 520L0346 • Rev BA • Feb 2014
Weight and dimensions
Type Length
L max. L1 mm [in]
Weight
kg [lb]
OMM 8 104.0 [4.09] 3.5 [0.14] 1.9 [4.2]
OMM 12.5 106.0 [4.17] 5.5 [0.22] 2.0 [4.4]
OMM 20 109.0 [4.29] 8.5 [0.33] 2.1 [4.6]
OMM 32 114.0 [4.49] 13.5 [0.53] 2.2 [4.8]
OMM 50 122.0 [4.80] 21.5 [0.85] 2.4 [5.3]
Technical Information OML and OMM Orbital Motors
Dimensions, OMM side port, US version
520L0346 • Rev BA • Feb 2014 41
2 bolt flange kit, code no. 151G0211
P301 013
2.2 [.087]
1.8 [.071]
2.2 [.087]
1.8 [.071]
5.5 [.217]
73.5 [2.894]
73 [2.87]
∅63 [2.48]
∅62.95 [2.478]
97.2 [3.827]
96.8 [3.811]
9.2 [.362]
8.8 [.246]
80 [3.15]
Technical Information OML and OMM Orbital Motors
Accessories
42 520L0346 • Rev BA • Feb 2014
Installation of the Danfoss Orbital Motors
About the design
•
To ensure efficient operation all hydraulic components must be installed according to their individual
instructions.
•
The pump line must include a manometer connection.
•
To ensure designed contact and minimise the tension all mounting flanges must be flate.
Hydraulic lines must be fitted correctly to prevent air entrappment.
About the assembly
•
Follow the mounting instructions printed on the inside of the cardboard box.
•
To prevent contamination, do not dismantle the plastic plugs from the connection ports untill the
fittings are ready to be assempled.
•
Check that there is full face contact between the motor mounting flange and the mating part.
•
Do not force the motor into place when tightening the mounting screws.
•
Avoid unsuitable sealing material on fittings such as pack twine, teflon and others.
•
Use only bonded seals, O-rings, steel washers and the like.
•
When tightening the fittings never use a torque higher than the max. tightening torque stated in the
instructions.
•
Make sure that the cleanliness of the oil used is better than 20/16 (ISO 4406). Always use a filter for oil
refilling.
Starting up and running in the hydraulic system
•
Through a small-meshed filter fill up the tank with oil to the upper oil level mark.
•
Start the drive engine, and if possible, let it work at its lowest speed. If the motor is provided with
bleed screws, keep these open until the emerging oil is non-foaming.
•
Check that all components are correctly connected (pump following the right direction of rotation
etc.).
•
In load-sensing systems, also make sure that the signal lines are bled.
•
Indications of air in the hydraulic system:
‒
oam in the tank
‒
jerky movements of motor and cylinder
‒
noise
•
If so required, refill with oil.
•
Connect the system to a separate tank that includes a filter (fineness max. 10 µm) with twice the
capacity of the max. oil flow. Let the entire system run without load (no pressure) for about 30
minutes.
•
Do not load the system until it is all bled and clean.
•
Check the tightness of the system and make sure that its performance is satisfactory.
•
Change the oil filter, and if so required, refill with oil.
Operation
•
Do not expose the motor to pressures, pressure drops and speeds above the max. values stated in the
catalogue.
•
Filter the oil to ensure that the contamination level 20/16 (ISO 4406) or better.
Technical Information
OML and OMM Orbital Motors
Hydraulic systems
520L0346 • Rev BA • Feb 2014 43
Maintenance
•
When working with hydraulic systems, the main criteria of operating safety and endurance is careful
maintenance.
•
Always renew and replace oil, oil filters and air filters according to the instructions given by the
respective manufacturers.
•
Regularly check the condition of the oil.
•
Frequently check system tightness and oil level.
Technical Information OML and OMM Orbital Motors
Hydraulic systems
44 520L0346 • Rev BA • Feb 2014
Technical Information OML and OMM Orbital Motors
520L0346 • Rev BA • Feb 2014 45
Technical Information OML and OMM Orbital Motors
46 520L0346 • Rev BA • Feb 2014
Technical Information OML and OMM Orbital Motors
520L0346 • Rev BA • Feb 2014 47
Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
electronic 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. Building on our extensive
applications expertise, we work closely with our customers to ensure exceptional performance for a
broad range of off -highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring vehicles to
market faster.
Danfoss – Your Strongest Partner in Mobile Hydraulics.
Go to www.powersolutions.danfoss.com for further product information.
Wherever off -highway vehicles are at work, so is Danfoss.
We off er expert worldwide support for our customers, ensuring the best possible solutions for
outstanding performance. And with an extensive network of Global Service Partners, we also provide
comprehensive global service for all of our components.
Please contact the Danfoss Power Solution representative nearest you.
Local address:
Danfoss
Power Solutions GmbH & Co. OHG
Krokamp 35
D-24539 Neumünster, Germany
Phone: +49 4321 871 0
Danfoss
Power Solutions ApS
Nordborgvej 81
DK-6430 Nordborg, Denmark
Phone: +45 7488 2222
Danfoss
Power Solutions US Company
2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239 6000
Danfoss
Power Solutions
(Shanghai) Co. Ltd.
Building #22, No. 1000 Jin Hai Rd
Jin Qiao, Pudong New District
Shanghai, China 201206
Phone: +86 21 3418 5200
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to
products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
520L0346 • Rev BA • Feb 2014 www.danfoss.com
©
Danfoss A/S, 2014
Products we off er:
• Bent Axis Motors
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Pumps and Motors
• Displays
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• Integrated Systems
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Handles
• Microcontrollers and
Software
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Pumps
• Orbital Motors
• PLUS+1® GUIDE
• Proportional Valves
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www.schwarzmueller-
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www.valmova.com
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www.hydro-gear.com
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