Orbital hydraulic motors. Built for mobile machines.

Twelve motor series from 80 to 1 000 cm³/rev and OM-ST steering units, each load-tested.

View motor series

Assembly and test workshop with finished orbital hydraulic motors waiting on a rack beside the test bench, machining centres and a cleaning line behind — OM series on the run-in lineJining, ShandongStator and rotor grinding · housing machining · ultrasonic cleaning · spray line

02 / Series shelf

Three series cover
most mobile drives

The three that cover most mobile enquiries, from mini-excavator travel drives to chipper feed rollers.

Compare all series

Compact orbital hydraulic motor on a steel bench with its square mounting flange, keyed shaft and two side ports facing the camera

OM-1 series

Mini excavator travel and skid-steer drives.

ModelOM-1-160Cont. pressure175 barCont. torque380 N·m

Mid-size orbital hydraulic motor photographed from the same angle, cast housing and G3/4 ports visible beside its keyed shaft

OM-2 series

Midi excavator travel and truck-crane swing.

ModelOM-2-250Cont. pressure200 barCont. torque710 N·m

Large orbital hydraulic motor with a heavy cast housing, G1 ports and a 45 mm keyed shaft, photographed beside the smaller series

OM-5 series

Chipper feed rollers and drill rig heads.

ModelOM-5-630Cont. pressure175 barCont. torque1 570 N·m

03 / Full catalogue

Every other series
in the catalogue

The short bodies, wheel drives, two-speed motors, brake motors and steering units — the ones a maintenance buyer looks up by flange and displacement.

All 13 series

MiniOM-MN80–160 cm³/rev MediumOM-3200–400 cm³/rev MediumOM-4315–500 cm³/rev ShortOM-5S400–630 cm³/rev HeavyOM-6630–1 000 cm³/rev WheelOM-WH125–400 cm³/rev Two-speedOM-Z2200–500 cm³/rev Two-speedOM-D250–630 cm³/rev BrakeOM-B160–400 cm³/rev SteeringOM-ST50–400 cm³/rev

Quality / Bench test

Run-in and load test
before packing

Every motor is run-in and load-tested before it is packed, and the readings travel with the unit. The regime below is the standard one — we send the written test procedure out with your quotation.

Orbital hydraulic motor clamped in a load-test fixture with pressure gauges, a torque coupling and a technician recording readings

Run-in · Load test · External leakage · Recorded per unit

See the test bench Ask about the test record

Specification / At a glance

Certificate numbers on request.

01 Plant18 000 m²Floor area across two workshops and a test hall 02 Capacity110 000Units a year at catalogue displacement steps 03 Export62%Of output shipped outside China 04 QualityISO 9001CE · certificate numbers on request

Factory and capacity

Applications / Where they fit

Fitted to machines
that work off-road

The same motor family goes onto a mini excavator, a combine header and a chipper feed roller — what changes is the flange, the shaft and the ports.

Applications by machine

Orbital hydraulic motor installed as the travel drive of a compact tracked excavator, its two hoses running along the track frame

Construction

Excavator travel and attachment drives

Track frame, auger and breaker circuits on 3-8 t machines.

OM-1 · OM-2

Orbital hydraulic motor driving the header reel of a combine harvester, its hoses running back along the feeder house

Agriculture

Combine header and conveyor drives

Reel, feeder house and unloading auger drives on grain harvesters.

OM-2 · OM-3

Forestry

Chipper and winch feed drives

Feed roller and discharge belt drives on trailer chippers.

OM-5 · OM-6

Request / Quote

Send your mounting
and shaft data

We answer with a quotation within 24 hours on working days. Displacement, flange, shaft and port data get you a firm price and a drawing in one reply.