Danfoss_OMT_Series_Technical_Data.pdf - 第42页
Maximum oil flow in the drain line at a return pressure less than 5-10 bar [75-150 psi] (continued) Pressure drop Viscosity Oil flow in drain line bar [psi] mm 2 /s [SUS] l/min [US gal/min] 210 [3050] 20 [100] 6.0 [1.59]…
Motor with check valves and with drain connection
The shaft seal pressure equals the pressure on the drain line.
Maximum return pressure without drain line or maximum pressure in the drain line
– – – – Intermittent operation: the permissible values may occur for max. 10% of every minute.
Continuous operation
151-1674.10
0 100 200 300 400 500 600 700 800 max.
1500
1200
900
600
300
0
100
90
80
70
60
50
40
30
20
10
0
psi bar
P P
min
-1
(rpm)
Pressure drop in motor
151-1410.10
0 20 40 60 80 100 120 140 160 180 200 l/min
0 5 10 15 20 25 30 35 40 45 50 US gal/min
200
150
100
50
0
16
14
12
10
8
6
4
2
0
psi bar
∆ p ∆ p
Q
Q
The curve applies to an unloaded motor shaft and an oil viscosity of 35 mm
2
/s [165 SUS]
Oil flow in drain line
Maximum oil flow in the drain line at a return pressure less than 5-10 bar [75-150 psi]
Pressure drop Viscosity Oil flow in drain line
bar [psi] mm
2
/s [SUS] l/min [US gal/min]
140 [2030] 20 [100] 3.0 [0.79]
35 [165] 2.0 [0.53]
Technical Information
OMT and OMV Orbital Motors
OMV technical data
©
Danfoss | September 2021 BC152886483862en-000801 | 41
Maximum oil flow in the drain line at a return pressure less than 5-10 bar [75-150 psi] (continued)
Pressure drop Viscosity Oil flow in drain line
bar [psi] mm
2
/s [SUS] l/min [US gal/min]
210 [3050] 20 [100] 6.0 [1.59]
35 [165] 4.0 [1.06]
Direction of shaft rotation
Permissible shaft loads
Shaft load and bearing life time
The output shaft runs in tapered roller bearings that permit high axial and radial forces.
The permissible radial load on the shaft is shown for an axial load of 0 N as a function of the distance from
the mounting flange to the point of load application.
The curve is based on B10 bearing life (2000 hours or 12,000,000 shaft revolutions at 100 min
-1
) at rated
output torque, when mineral-based hydraulic oil with a sufficient content of anti-wear additives, is used.
For 3,000,000 shaft revolutions or 500 hours – increase these shaft loads with 52%.
The dash curve shows maximum radial shaft load. Any shaft load exceeding the values shown in the
curve will involve a risk of breakage.
Bearing life calculations can be made using the explanation and formula provided in the chapter Bearing
dimensioning in the technical information General Orbital Motors, BC152886483554.
OMV mounting flange: Standard
Shaft:
All shaft types
Technical Information
OMT and OMV Orbital Motors
OMV technical data
42 |
©
Danfoss | September 2021 BC152886483862en-000801
151-1973.10
-80 -60 -40 -20 0 20 40 60 80 100 120 mm
-3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 in
16000
14000
12000
10000
8000
6000
4000
2000
0
70000
60000
50000
40000
30000
20000
10000
0
lbf N
P
rad.
P
rad.
P
max.
0
+-
=15000 N
=3372 lbf
OMV mounting flange: Wheel
Shaft:
All shaft types
151-1969.10
0 20 40 60 80 100 120 140 160 180 200 mm
0 1 2 3 4 5 6 7 in
16000
14000
12000
10000
8000
6000
4000
2000
0
70000
60000
50000
40000
30000
20000
10000
0
lbf N
P
rad.
P
rad.
P
max.
0
+-
=15000 N
=3372 lbf
OMV mounting flange: SAE-C
Shaft:
All shaft types
Technical Information
OMT and OMV Orbital Motors
OMV technical data
©
Danfoss | September 2021 BC152886483862en-000801 | 43