Parker Vane Motors

Parker vane motors are fixed displacement motors from the former Denison Hydraulics range, in medium and heavy-duty versions.

They are designed for long service life in severe duty applications that need high pressure and high speed, including systems running on low lubricity and fire-resistant fluids.

The vanes, rotor and cam ring are pressure balanced, which keeps efficiency high over the life of the motor. Vane motors give high starting torque, so they can start under load without pressure overshoot, and very low torque ripple for smooth running at low speed.

Parker Vane Motor Range

Heavy Duty Vane Motors

M5A and M5B: Heavy duty vane motors from 6.3 to 25 cm³/r (M5A) and 12 to 45 cm³/r (M5B), rated up to 320 bar intermittent and 6,000 rpm depending on size. Interchangeable rotating groups make it easy to renew the cartridge or change displacement, and uni-directional models have a cross-port check valve for smooth dynamic braking. Parker valves can be integrated into the motor for compact fan drive and cooling circuits.
M5AF and M5BF: Versions with a double ball bearing and keyed or taper shaft for mounting a fan directly on the motor shaft, with external or internal drain options.

Medium Duty Vane Motors

M3B: Medium duty vane motors from 9 to 36 cm³/r, rated up to 230 bar and 4,000 rpm.
M4C, M4D and M4E: Medium duty vane motors from 24 to 75 cm³/r (M4C), 62 to 138 cm³/r (M4D) and 153 to 214 cm³/r (M4E), rated up to 230 bar and 4,000 rpm. M4S versions are also available.
M4DC: Double motors with two cartridges of unequal size on one shaft, allowing two or three speed operation. Suited to traction drives where they can replace a manually shifted gearbox.

Further sizes, shafts, ports and drain options are available beyond those listed here; our team can help with any Parker vane motor you need.

Typical Applications

Parker vane motors are used in mobile and industrial hydraulics, including:

Fan drive and cooling systems
Mobile machinery
Traction and auxiliary drives
Winches and conveyors
Industrial machinery
Systems using fire-resistant fluids

Our website shows a selection of the Parker hydraulic products we supply. If you cannot find what you need or would like impartial advice on the right specification for your application, please contact our team; we source globally and will still be able to help.