MRD/MRV SERIES

High Torque Radial Piston Motors Dual and Variable Displacement – Series MRD/MRV

Calzoni Hydraulics dual and variable displacement hydraulic motors ensure superior reliability and extended lifetime, supported by their high mechanical and volumetric efficiency, high starting torque and advanced low friction and wear technology.

PRODUCT OVERVIEW

Calzoni Hydraulics dual and variable displacement hydraulic motors, with unique fluid column technology, have been specifically engineered for high mechanical and volumetric efficiency over a wide range of speed and torque.
The dual/variable displacement function is accomplished by having the eccentric cam free to move radially, changing its eccentricity and consequently the motor’s displacement. Hydraulic cylinders located in the drive shaft are used to control the radial movement of the cam, commanding the displacement change. In MRV series an additional valve allows the step-by-step movement of the piloting cylinders, granting fully variable operation.

MRD (dual displacement) motors are combined into 8 different frame sizes, corresponding to 16 standard displacements available, from 300 cc/rev to 8200 cc/rev.

MRV (variable displacement) motors are combined into 7 different frame sizes, corresponding to 13 standard displacements available, from 450 cc/rev to 8200 cc/rev.

High Torque Radial Piston Motors Dual and Variable Displacement - Series MRD/MRV

Applications:

  • Winches
  • Injection moulding
  • Mooring (Constant tensioning)
  • Mixers

Markets:

  • Industrial
  • Material handling
  • Marine
  • Oil&Gas
  • Mobile

Features/Benefits:

  • High volumetric and mechanical efficiency
  • Starting torque: up to 95% of the theoretical value
  • High reliability and extremely long lifetime
  • Smooth rotation at very low speed
  • High accuracy in positioning control
  • Possibility to change the displacement whilst the motor is rotating
  • External or internal piloting available
  • High resistance to thermal shocks
  • Wide range of operating temperature
  • Wide range of operating fluids
  • Reversible operation (motor and pump)
  • Highly customizable
  • Full range of parking brakes available