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ORB-AB

ORB-AB

Hydraulic motor with mechanical brake for secure actuation

  • ● Made in Japan quality
  • ● Built-in mechanical brake which enables to realize secured actuation and stop
ApplicationsFor ship/boatPower source for winch, wire-reel winch, side roller etc.
For Industrial machineIndex position of belt converer
Prevent injection molding machine from reverse-rotation
For construction vehiclePower source for winch in krane
Prevent crawler from its moving by gravity
*By installing hydraulic control valve like counter balance valve or counter balance brake valve in this motor in addition, quicker operation and more secured actuation/stop can be realized.

Specification of hydraulic motor

SizeTheoretical 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/B20B30/B40
0807884668 (14.96)68 (14.96)23534321.0 (3045.80)30.9 (4481.67)715.2 (33.51)16.2 (35.71)
1009769069 (15.18)87 (19.14)28838428.0 (4061.06)15.4 (33.95)16.4 (36.16)
12512355270 (15.40)95 (20.90)36547615.6 (34.39)16.7 (36.82)
16015846075(16.50)44958816.0 (35.27)17.0 (37.48)
20019537355171716.1 (35.49)17.1 (37.70)
25024429868082126.0 (3770.99)16.8 (37.03417.8 (39.24)
29028825373783420.0 (2900.76)23.0 (3335.87)17.2 (37.91)18.3 (40.34)
31530623874484819.0 (2755.72)22.0 (3190.84)17.4 (38.36)18.4 (40.56)
39039318576787415.0 (2175.57)16.5 (2393.13)18.2 (40.12)19.2 (42.33)
41041017777488414.5 (2103.05)16.0 (2320.61)17.9 (39.46)19.0 (41.89)
Model naming system(Japanese)Performance table(Japanese)
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 φ25.4 shaft is used, it is highly recommended to use motor under condition that output torque is less than 280N・m.
4: Max. input pressure must be less than 30.9MPa (4481.67psi) and do not exceed max. output torque.
5: Max.permissible back pressure is 7MPa (1015.27psi), but in the case of operating with more than 1.8MPa(261.07psi), drain piping is required to protect oil sealing.
6: ΔP means differential pressure.

Specifications of brake

External pilot type

Mechanical brake specificationCharacterBrake torqueBrake relief pressure
B10100N・m1.0 MPa (145.04psi)
B20200N・m2.0 MPa (290.08psi)
B30300N・m2.0 MPa (290.08psi)
B40400N・m3.0 MPa (435.11psi)

FAQ

Overview of NOP® Orbmark® motor

NOP® Orbmark® is a type of hydraulic motor, driven by internal gear and fluid flow. Nippon Oil Pump has a variety of the line up/variation of its motor and also provides many type of accessories like reducer, control valve. All Orbmark® motors are manufactured/assembled/Inspected in NOP® factories in Japan and provides high-quality products to the many customers.

Overview of high performance motor ORB-S

High performance motor ORB-S series has a built-in taper-roller bearing, having high durability against radial/thrust load.
Its motor is able to receive the high pressure in intake port, and NOP® unique structure of "X-Ring" and "Double-tight processing" prevents troubles by oil-leaking.

Specs and performance chart of Orbmark® motor

See below link to check the basic specs/type of Orbmark motor
Model list of Orbmark® motor (Japanese)

See below link to check performance chart of Orbmark® motor
Performance chart of Orbmark® motor

Check other question

Contact us if you have something unclear.

If you have any question on NOP® products, please take a look at "FAQ" at the first place.
If you can not find suitable answer, please give your inquiry via "Contact to" or phone-call.

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