Danfoss_OMT_Series_Technical_Data.pdf - 第41页

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 opera…

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OMV, OMVW, OMVS technical data
Type
OMV
OMVW
OMVS
OMV
OMVW
OMVS
OMV
OMVW
OMVS
OMV
OMVW
OMVS
OMV
OMVW
OMVS
Motor size 315 400 500 630 800
Geometric displacement cm
3
[in
3
] 314.5 [19.19] 400.9 [24.46] 499.6 [30.49] 629.1 [38.39] 801.8 [48.93]
Maximum speed min
-1
[rpm] cont. 510 500 400 315 250
int
1)
630 600 480 380 300
Maximum torque N•m [lbf•in] cont. 920 [8140] 1180 [10440] 1460 [12920] 1660 [14690] 1880 [16640]
int.
1)
1110 [9820] 1410 [12480] 1760 [15580] 1940 [17170] 2110 [18680]
Maximum output kW [hp] cont. 42.5 [57.0] 53.5 [71.7] 53.5 [71.7] 48.0 [64.4] 42.5 [57.0]
int.
1)
51.0 [68.4] 64.0 [85.8] 64.0 [85.8] 56.0 [75.1] 48.0 [64.4]
Maximum pressure drop bar [psi] cont. 200 [2900] 200 [2900] 200 [2900] 180 [2610] 160 [2320]
int.
1)
240 [3480] 240 [3480] 240 [3480] 210 [3050] 180 [2610]
peak
2)
280 [4060] 280 [4060] 280 [4060] 240 [3480] 210 [3050]
Maximum oil flow l/min
[USgal/
min]
cont. 160 [42.3] 200 [52.8] 200 [52.8] 200 [52.8] 200 [52.8]
int.
1)
200 [52.8] 240 [63.4] 240 [63.4] 240 [63.4] 240 [63.4]
Maximum starting
pressure with unloaded
shaft
bar [psi] 8 [116] 8 [116] 8 [116] 8 [116] 8 [116]
Minimum starting
torque
at max. press. drop cont.
N•m [lbf•in]
710 [6280] 910 [8050] 1130 [10000] 1330 [11770] 1510 [13360]
at max. press. drop int.
1)
N•m [lbf•in]
850 [7520] 1090 [9650] 1360 [12040] 1550 [13720] 1700 [15050]
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.
Type Maximum inlet pressure Maximum return pressure
with drain line
OMV
OMVW
OMVS
bar [psi] cont. 210 [3050] 140 [2030]
bar [psi] int.
1)
250 [3630] 175 [2540]
bar [psi] peak
2)
300 [4350] 210 [3050]
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.
For maximum permissible combination of flow and pressure, see OMV function diagrams on page 45 for
actual motor.
Maximum permissible shaft seal pressure
Motor with check valves and
without use of drain connection
The pressure on the shaft seal never exceeds the pressure in the return line.
151-320.10
Technical Information
OMT and OMV Orbital Motors
OMV technical data
40 |
©
Danfoss | September 2021 BC152886483862en-000801
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