Nippon Oil Pump Orbmark Motor ORB-SR With Mechanical Brake

Manufacturer: Nippon Oil Pump Co., Ltd.
Model: ORB-SR

Features

Hydraulic motor with mechanical brake
Made in Japan quality
Built-in mechanical brake with taper roller bearing
No piping is required because of brake relief system with internal pilot

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 (Nm)	Max. Instantaneous Torque (Nm)	Normal Continuous Pressure △P MPa (psi)	Max. Instantaneous Pressure △P MPa (psi)	Permissible Back Pressure MPa (psi)	Approx. Weight kg(lbs)
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 (Nm)	Max. Instantaneous Torque (Nm)	Normal Continuous Pressure △P MPa (psi)	Max. Instantaneous Pressure △P MPa (psi)	Permissible Back Pressure MPa (psi)	B16/B20	B30
050	54.0	1034	57(15.1)	68 (17.96)	110	135	15.5 (2248.09)	19.0 (2755.72)	7 (1015.27) *See note 4	13.5 (29.76)	14.4 (31.75)
070	71.4	790		76 (20.08)	153	183				13.7 (30.20)	14.6 (32.19)
100	98.5	588			210	246				14.0 (30.87)	14.9 (32.85)
120	118.4	478			252	300		18.5 (2683.20)		14.1 (31.09)	15.0 (33.07)
130	129.0	438			250	330	14.0 (2030.53)	18.5 (2683.20)		14.3 (31.526)	15.2 (33.51)
160	165.3	346			322	383		17.0 (2465.65)		14.6 (32.19)	15.5 (34.17)
190	189.8	307			363	432				14.7 (32.41)	15.6 (34.39)
205	205.0	273			403	475				14.9 (32.85)	15.8 (34.83)
240	235.5	240			395	495	12.0 (1740.46)	15.5 (2248.09)		15.1 (33.29)	16.0 (35.274)
280	282.5	201			410	479	10.5 (1522.90)	12.5 (1812.98)		15.5 (34.17)	16.4 (36.16)
310	306.9	184			440	519	10.5 (1522.90)	12.5 (1812.98)		15.7 (34.61)	16.6 (36.60)
380	376.4	151			464	531	9.0 (1305.34)	10.5 (1522.90)		16.2 (35.72)	17.1 (37.70)
410	409.9	138			470	555	8.5 (1232.82)	10.0 (1450.38)		16.5 (36.38)	17.4 (38.36)

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: Input pressure must be less than 21MPa (3045.80psi) at maximum.
4: Max.permissible back pressure is 7MPa(1015.27SPI), but in the case operating more than 1.8MPa (261.07PSI), drain-piping is required to protect oil sealing.
5: To release brake securely, the pressure level for motor must be more than one for releasing brake.
6: To activate brake serurely, hydraulic circuit to stop motor must be ABT-Open.
7: Consult with NOP customer support if you use hydraulic motor under the condition that outut torque exceeds 280Nm, or revolution speed exceeds 500rpm.
8: △ means differential pressure
9: Inpossible to install counter balance valve and counter balance brake valve in parallel.