ROL-SEAL® Specifications - English Metric Specs.
For decades, Von Ruden’s Rol-Seal® Rotary Abutment hydraulic motors have been the perferred choice for designers throughout the world. They deliver:
• High starting torque of 92-94%.
• No load breakaway pressures typically at less than 10 PSI
• Less torque "ripple" at low and high speeds.
• Dependable performance under adverse conditions
• Many configurations allow for double ended shafting.

Today, we build a variety of models to meet most applications; and to simplify your design project, we also build compatible Motor Brakes and Planetary Gear Boxes.

For applications where concerns for precision and repeatability are paramount, our line of Axial Vane hydraulic motors is also available.
If you need technical or other data on Rol Seal® motors that is not on this site; or if you would like our recommendations or any other assistance, please consider us at your service.

You may also view or download a general overview (3 page pdf) of our Rol-Seal Motors.

For access to our Engineering Library, click here.
ROL-SEAL GENERAL PERFORMANCE SPECIFICATIONS – ENGLISH

 

 Displacement
(in3 /rev.)
Models MRSA and MRSAA		 Displacement
(in3 /rev.)
Models RSA & RSB		 Displacement
(in3 /rev.)
Model RSC
.22 .38 .45 .60 .70 .85 1.00 2.0 3.0 4.0 5.0 6.0 8.0 10.0
Flow
(GMP)		 Continuous 5.0 8.0 10.0 13.0 15.2 17.4 22.0 18 20 18 17 39 42 39
Intermittent 7.0 12.0 14.0 18.0 21.0 26.0 30.0 31 39 44 39 52 59 61
Max Speed 1, 4
(RPM)		 Continuous 6000 6000 6000 6000 6000 6000 6000 2000 1500 1000 750 1500 1200 900
Intermittent 7000 7000 7000 7000 7000 7000 7000 3500 3000 2500 1800 2000 1700 1400
Pressure 2, 3, 4
Change
(PSI)		 Continuous 3000 3000 3000 3000 2500 2500 2500 2500 2250 2000 2000 2000 2000 2000
Intermittent 4000 4000 4000 4000 3500 3500 3500 3000 3000 3000 3000 3000 3000 3000
Peak 5000 5000 5000 5000 4500 4500 4500 3750 3750 3500 3500 3500 3500 3500
Max Theoretical
Torque (lb. in.)		 Continuous 105 182 215 287 278 338 398 796 1075 1273 1592 1910 2547 3184
Intermittent 140 242 287 382 390 473 557 955 1433 1910 2388 2866 3821 4777
Weight (lb.) 12.0 12.0 12.0 12.0 13.0 13.0 13.0 13 14 15 16 36 39 42
Notes 1. Intermittent conditions are to 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.
ROTATIONAL MOMENT OF INERTIA (WK2) SHAFT RADIAL THRUST LOAD CAPACITY
Model Displacement
(in3/rev)		 lb-in2 Model Radial Thrust
MRSA/MRSAA .22 - 1.00 Contact Factory MRSA/MRSAA 300 lbs. 1 250 lbs.
RSA/RSB 2.0 1.23 RSA/RSB 600 lbs. 2 600 lbs.
RSA/RSB 3.0 1.42 RSC 1000 lbs. 3 1000 lbs.
RSA/RSB 4.0 1.61 NOTES:
1. Based on load located 0.5" from mounting flange.
2. Based on load located 1.0" from mounting flange.
3. Based on load located 1.5" from mounting flange.
RSA/RSB 5.0 1.80
RSC 6.0 7.25
RSC 8.0 8.15
RSC 10.0 9.04

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VON RUDEN MANUFACTURING, INC
1008 FIRST ST N.E.  |   P.O. BOX 699  |  BUFFALO, MN 55313
Phone:  (763) 682-3122   |    Fax:  (763) 682-3954