Rotary Piston Motors

A rotary piston engine offers an impressive combination of compact design, high power density and precise control – ideal for demanding hydraulic applications with limited installation space. Thanks to its rotating piston arrangement, the motor can be flexibly integrated into the system, while generating high forces and operating with low vibration. At LöSi, you will find a carefully selected series of rotary piston motors that combine many years of hydraulic experience with modern technology.

Rotary Piston Motor RSA 02 K-A Shaft 25.4
Rotary Piston Motor RSA 02 K-A Shaft 25.4
Hydraulic rotary piston motor rolling seal, SAE A, 2BØ11, V=33cm3/rev, Shaft Ø25.4
Price on request
Rotary Piston Motor RSA 04S HDW SII Version
Rotary Piston Motor RSA 04S HDW SII Version
Hydraulic rotary piston motor rolling seal, SAE A, 2BØ11, V= 65.2 cm³/rev, splined shaft Z=13 + 2nd shaft Ø14x118mm, RSA 04S HDW SII
Price on request
Rotary Piston Motor RSA 04 K Shaft 25.4
Rotary Piston Motor RSA 04 K Shaft 25.4
Hydraulic rotary piston motor rolling seal, SAE A, 2BØ11, V= 65.2 cm³/rev, shaft Ø25.4
Price on request
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What is a Rotary Piston Motor?

A hydraulic rotary piston motor is a special form of displacement-controlled drive technology. Often referred to as a Wankel hydraulic motor, it uses the principle of rotating pistons instead of oscillating (up and down) pistons.

This construction is ingeniously simple and efficient: Since no valves are necessary for control and only a few moving parts are used, the motor is extremely compact and light. It converts hydraulic pressure directly into a smooth rotary motion – ideal for applications where every centimeter of installation space counts.

 

Advantages of Our Rotary Piston Motors

The rotary piston motor shows its strengths where other designs are too large or vibrate too much. Due to the complete balancing of the rotating masses, it offers a smoothness that is unparalleled in the hydraulic sector.

Technical features that impress:

  • High Power Density: Maximum power delivery with minimal dimensions and low dead weight.
  • Low Vibration: Perfect for sensitive applications, as no masses have to be accelerated and decelerated.
  • Flexible Installation: Since the hydraulic lines can be routed completely freely, the motor can be integrated into complex systems regardless of position.
  • Low Maintenance: Fewer moving parts mean less wear and longer service life.
 

Typical Areas of Application for the Rotary Piston Motor

Due to its precision and compactness, the rotary piston motor is a problem solver in demanding industries. It is frequently used where installation space is scarce but performance is required:

  • Mobile Hydraulics: Drive of auxiliary units in vehicles where space is tight.
  • Special Machine Construction: Special robotics or handling systems.
  • Conveyor Technology: Space-saving drives for belts and chains.
  • Industry: Applications that demand stepless and jerk-free control of speed and torque.
 

Selection Criteria & Technical Data

So that you can fully exploit the advantages of Wankel technology, the motor must be designed exactly.

Define the following parameters for your selection:

  • Displacement: How many cm³/rev are necessary to reach the required torque?
  • Speed Range: Do you need very high speeds with high smoothness?
  • Interface: Which flange and which shaft fit into your design?
  • Hydraulic Values: Does the maximum operating pressure match your power unit?

Our team is happy to check for you whether a rotary piston motor is the more efficient alternative to conventional gerotor motors for your specific system.

 

Select & Order Rotary Piston Motor Now

Use modern drive technology for more efficiency in the smallest space. Discover our selection of high-performance rotary piston motors in the webshop.

Benefit from high quality, technical advice, and fast delivery. Select the matching model now and order your compact hydraulic solution conveniently online!

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