Danfoss_OMT_Series_Technical_Data.pdf - 第13页

Direction of shaft rotation B B A A 151-1050.10 Permissible shaft loads for OMT Mounting flange: Standard Shaft: All shaft types Mounting flange: Wheel Shaft: All shaft types The output shaft runs in tapered roller beari…

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Brake motors
Type Maximum presssure in
drain line
3)
Holding torque
4)
Brake-release pressure
3)
Maximum pressure in
brake line
OMT FX, OMT FL 5 bar
[70 psi]
1200 Nm
[10620 lbf·in]
12 bar
[170 psi]
30 bar
[440 psi]
OMT FH 5 bar
[70 psi]
1200 Nm
[10620 lbf·in]
30 bar
[440 psi]
280 bar
[4060 psi]
3)
Brake motors must always have a drain line. The brake-release pressure is the difference between the pressure in the brake line and the pressure
in the drain line.
4)
For the supply of motors with holding torques higher than those stated, please contact the Danfoss sales organization.
For maximum permissible combination of flow and pressure, see function diagram for actual motor.
Pressure drop in motor
151-1409.10
0 20 40 60 80 100 120 140 l/min
0 4 8 12 16 20 24 28 32 36 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] 2.5 [0.66]
35 [165] 1.5 [0.40]
210 [3050] 20 [100] 5.0 [1.32]
35 [165] 3.0 [0.79]
Technical Information
OMT and OMV Orbital Motors
OMT
12 |
©
Danfoss | September 2021 BC152886483862en-000801
Direction of shaft rotation
B BA A
151-1050.10
Permissible shaft loads for OMT
Mounting flange:
Standard
Shaft:
All shaft types
Mounting flange:
Wheel
Shaft:
All shaft types
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.
Mounting flange:
Brake-wheel
Shaft:
All shaft types
Technical Information
OMT and OMV Orbital Motors
OMT
©
Danfoss | September 2021 BC152886483862en-000801 | 13
Mounting flange:
Brake-standard
Shaft:
All shaft types
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 max. 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.
OMT Function diagrams
Continuous range
Intermittent range (maximum 10% operation every minute)
OMT 160
lbf•in Nm
5500
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
600
550
500
450
400
350
300
250
200
150
100
50
0
0 100 200 300 400 500 600 700 800
151-493.10
min
-1
(rpm)
Q=10 l/min
[2.6 US gal/min]
20 l/min
[5.3 US gal/min]
Q=125 l/min
[33.0 US gal/min]
40 l/min
[10.6 US gal/min]
60 l/min
[15.9 US gal/min]
80 l/min
[21.1 US gal/min]
100 l/min
[26.4 US gal/min]
200 bar
∆ p= 40 bar
2900 psi
160 bar
2320 psi
∆ p=240 bar
3480 psi
580 psi
1740 psi
120 bar
1160 psi
80 bar
N=5kW
10kW
N=35kW
85%
80%
30hp
35hp
15hp
10hp
5hp
η
t
=86%
η
t
=70%
25hp
15kW
30kW
20kW
25kW
20hp
Technical Information
OMT and OMV Orbital Motors
OMT
14 |
©
Danfoss | September 2021 BC152886483862en-000801