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Item # 3187, Rol-Seal® MRSA and MRSAA Series 5.0 Gallon Per Minute (gpm) Continuous Flow Hydraulic Motor

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The MRS design is a modified configuration that yields units intended for small space applications that require the combination higher speeds and lower torques.

For decades, Von Ruden®’s Rol-Seal® Rotary Abutment hydraulic motors have been the preferred choice for designers working on applications where normal motors produce marginal or unsatisfactory results. Our MRS series units have been specially modified to deliver much higher speeds than their larger RSA, RSB, & RSC Rol-Seal® counterparts while maintaining many of the other advantages of those larger units.




Specifications  · Features  · Other Motor Designs for Other Applications  · Note

Specifications

Brands
Rol-Seal®
Von Ruden®

Displacement
0.45 in³/rev

Continuous Flow
10 gpm

Intermittent Flow
14.0 gpm

Maximum Continuous Speed
6000 rpm

Maximum Intermittent Speed
7000 rpm

Continuous Pressure
3000 psi

Intermittent Pressure
4000 psi

Peak Pressure
5000 psi

Maximum Theoretical Torque
215 in·lb

Maximum Intermittent Torque
287 in·lb

Weight
12.0 lb

Radial Load Capacity1
300 lb

Thrust Load Capacity
250 lb

Note for Rotational Moment of Inertia (Wk2)
Contact Factory.
1 Based on load located 0.5" from mounting flange.


Features
  1. More Useable Speed: These motors run smoothly with minimal performance loss at continuous speeds up to 6000 RPM. Their low speed characteristics often eliminate the need for additional speed reduction. Typical breakaway pressure at a no load condition is less than 10 PSI.
  2. Higher Starting Torque: Typically this is in the 80-84% range. That means overall hydraulic systems savings because designers often can get the start-up characteristics then need with these smaller -displacement MRS motors.
  3. Higher Running Torque and Radial Load Capacities: Though MRS units are relatively low displacement motors, they are surprisingly robust. Radial loads up to 300 lbs are standard and continuous torques from 105 to 478 lb. in. can be produced. Large flow passages reduce internal pressure drop.
  4. Long Life: Performance stays relatively constant over the motor’s working life. A Double Seal configuration that provides extra protection in dirt or dust-laden environments without increasing their overall space requirements is available.


Other Motor Designs for Other Applications
When accuracy and precise repeatability are your application’s primary concern, you should consider our line of Axial Vane hydraulic motors.


Note
  1. Intermittent conditions must be less than 10% of every minute.
  2. Inlet and return pressures are not to exceed ratings listed above.
  3. Peak conditions are to be less than 1% of every minute.
  4. Intermittent speed and peak pressure must not occur simultaneously.


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 DOWNLOADS 

Brochure for Rol-Seal® MRSA, MRSSA, RSA, RSB, and RSC Series Hydraulic Motors
(PDF, 14157KB)