RM410 Series Air Motors & Fittings

This range of bolt on valves offers very sensitive speed and directional control. One frictionless matched spool and sleeve assembly is offered with two alternative means of actuation.

Peak power 7.5 kW (10 HP) Performance data

  • Mass (motor only): 62 kgs/137 lbs
  • Moment of inertia of rotating parts: 4.1 gm2/14 lb. in2 (motor only)
  • Max overhung force on motor shaft: 1330 N/300 lbf.
  • Temperature range: -20°C to 80°C/-4°F to 176°F


As standard these valves can be supplied with either EQUAL POWER or BIASED POWER spools, the latter is suitable for hoisting applications (normal power for lifting - reduced power for lowering).

The direction of reduced power must be stated when ordering CW or CCW, when viewed on the output shaft of the motor or geared motor.

Two options are available:

  • Remotely Controlled (RCV)
  • Hand Controlled (HCV)

Parking brake installation details

The brake module bolts directly onto the motor mounting face and has exactly the same interface as the motor. As shown in the drawing below, the brake consists of two spring-applied shoes pressed against a central hub.

These shoes are released by applying air pressure to the cylinder/piston assembly. The brake torque can be varied by means of two spring adjusters but it is normally set so that a pilot pressure of 4.1 bar/60 psi will fully release it. Pressures below this level will progressively reduce the braking torque available.

The brakes are set at the plant but it may be necessary to make adjustments onsite to suit the individual application.

Geared motor installation details

Maximum performance details listed below are at 6 bar / 90 psi. A typical minimum gearbox efficiency of 90% can be expected. The maximum overhung force is assumed acting midway along the output shaft.

Speak to our Hydraulics division about your factory automation


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