We produce Radial Piston Motor MR, MRE, MRD, MRDE, MRV, MRVE Hydraulic Parker DENISON CALZONI Motor
MR33 MR57 MR73 MR93 MR110 MR125 MR160 MR190 MR200 MR250 MR300 MR350 MR450 MR600 MR700 MR1100 MR1600 MR1800 MR2400 MR2800 MR3600 MR4500 MR6500 MR7000 Rexroth MR Motor 
MRE330 MRE500 MRE800 MRE1400 MRE2100 MRE3100 MRE5400 MRE8200 Rexroth MRE Motor, etc.
The outstanding performance of this motor is the result of an original and patented design.
The principle is to transmit the effort from the stator to the rotating shaft (2) by means of
a pressurized column of oil (a) instead of the more common connecting rods, pistons,
pads and pins.
This oil column is contained by a telescopic cylinder (1) with a mechanical connection
at the lips at each end which seal against the spherical surfaces of the cylinder-heads (3)
and the spherical surface of the rotating shaft (4).
These lips retain their circular cross section when stressed by the pressure so there is no
alteration in the sealing geometry. The particular selection of materials and optimisation
of design has minimized both the friction and the leakage.
Another advantage of this design stems from the elimination of any connecting rods, the
cylinder can only expand and retract linearly so there are no transverse components of
the thrust. This means no oval wear on the moving parts and no side forces on the cylinder
joints.