Hydraulic Motors
Hydraulic Motor Manufacturer for Low-Speed High-Torque Drives.
JST supplies radial piston and orbital hydraulic motors for OEM machinery, replacement projects and non-standard drive requirements. Selection starts from working torque and speed, then confirms pressure, flow, duty cycle, shaft and installation interfaces.
Selection Boundary
Choose the motor from the machine duty, not from displacement alone.
Required output torque, continuous and peak speed, pressure differential, start frequency and shock load determine the practical motor group. Shaft form, mounting, valve plate or distributor interface and case-drain arrangement are confirmed against the machine drawing before release.
Motor Series
Radial piston and orbital platforms.
JHM Radial Piston MotorsFive-piston crankshaft connecting-rod design for stable low-speed, high-torque winch and heavy-duty drives.View technical data
JNM
JNM Radial Piston MotorsOscillating-cylinder crankshaft motors covering JNM05 through JNM7 internal model groups.View technical data
QJM
QJM Radial Ball-Piston MotorsFixed and supported two-speed floating-rotor choices for heavy rotary, mining, marine and winch duty.View technical data
BM
BM Orbital MotorsCompact motor platform for mobile equipment, agricultural machinery and auxiliary hydraulic drives.View technical data
01 / Primary Data
Torque and speed
Provide continuous working torque, maximum starting torque when known, operating speed range and load condition.
02 / Hydraulic Data
Pressure and flow
Confirm inlet pressure, return or back pressure, available flow, oil temperature and expected operating cycle.
03 / Interface
Shaft and mounting
External spline, internal spline, parallel key and project-specific interfaces are reviewed with the mounting drawing.
Manufacturing Evidence
Machining, assembly and hydraulic verification in one production workflow.
JST machines critical housings and drive components, controls identified parts through assembly and uses dedicated equipment to record motor torque, speed, pressure, flow, leakage and temperature under an agreed test condition.
Engineering References
Continue with the technical question.
Project Review
Need a standard motor or a non-standard interface?
Send the operating point and available installation drawing. JST can review torque, speed, displacement, output shaft, mounting dimensions and hydraulic interfaces.