Nippon Oil Pump NOP
Nippon Oil Pump Orbmark Motor ORB-AH

Manufacturer: Nippon Oil Pump Co., Ltd.
Model: ORB-AH
Features
- NOP® hydraulic motor designed under world standard specification
- Wheel type of ORB-A series
- Made in Japan quality
- With flange suitable for wheel drive
- High durability by heat-shock guard design by NOP
Specifications
Size | Theoretical Displacement (cm3/rev) | Normal Continuous Revolution (rpm) | Normal Continuous Flow rate ℓ/min (US gal/min) | Max. Instantaneous Flow rate ℓ/min (US gal/min) | Normal Continuous Torque (N・m) | Max. Instantaneous Torque (N・m) | Normal Continuous Pressure △P MPa(psi) | Max. Instantaneous Pressure △P MPa(psi) | Permissible Back Pressure MPa (psi) | Approx. Weight kg (lbs) | |
---|---|---|---|---|---|---|---|---|---|---|---|
B10/B20 | B30/B40 | ||||||||||
080 | 78 | 846 | 68 (17.96) | 68 (17.96) | 235 | 343 | 21.0 (3045.80) | 30.9 (4481.67) | 7 (1015.27) *Note 5 | 15.2 (33.51) | 16.2 (35.71) |
100 | 97 | 690 | 69 (18.23) | 87 (22.98) | 288 | 384 | 28.0 (4061.06) | 15.4 (33.95) | 16.4 (36.16) | ||
125 | 123 | 552 | 70 (18.49) | 95 (25.10) | 365 | 476 | 15.6 (34.39) | 16.7 (36.82) | |||
160 | 158 | 460 | 75 (19.81) | 449 | 588 | 16.0 (35.27) | 17.0 (37.48) | ||||
200 | 195 | 373 | 551 | 717 | 16.1 (35.49) | 17.1 (37.70) | |||||
250 | 244 | 298 | 680 | 821 | 26.0 (3770.99) | 16.8 (37.04) | 17.8 (39.24) | ||||
290 | 288 | 253 | 737 | 834 | 20.0 (2900.76) | 23.0 (3335.87) | 17.2 (37.92) | 18.3 (40.34) | |||
315 | 306 | 238 | 744 | 848 | 19.0 (2755.72) | 22.0 (3190.84) | 17.4 (38.36) | 18.4 (40.57) | |||
390 | 393 | 185 | 767 | 874 | 15.0 (2175.57) | 16.5 (2393.13) | 18.2 (40.12) | 19.2 (42.33) | |||
410 | 410 | 177 | 774 | 884 | 14.5 (2103.05) | 16.0 (2320.61) | 17.9 (39.46) | 19.0 (41.89) |
- 1: Do not drive motor with max. torque/max. pressure in more than 6 seconds.
- 2: Recommended hydraulic oil: ISO-VG32 or same class.
- 3: If φ1″ shaft is used, it is highly recommended to use motor under condition that output torque is less than 280N・m. If actuating with more than 280N・m, it is highly recommended to use spline shaft or φ32 shaft.
- 4: Max. input pressure must be less than 30.9MPa (4481.67psi).
- 5: Max.permissible back pressure is 7MPa (1015.27psi), but in the case of operating with more than1.8MPa(261.07psi), drain piping is required to protect oil sealing.
- 6: ΔP means differential pressure.