Hydraulic Motors

JHM Series Radial Piston Hydraulic Motors

JHM Series five-piston crankshaft connecting-rod radial piston hydraulic motors support low-speed high-torque winch, deck machinery and industrial drives.

Focus: JHM model group, displacement, shaft type and compatible valve plate
Engineering boundary: Catalog values are preliminary references; final duty, pressure and interface require JST engineering confirmation.

Product Overview

Series capability and selection context

JHM1, JHM2, JHM3, JHM6, JHM11, JHM16 and JHM31 are internal model groups. Shaft type and compatible valve plate are selected with the duty and interface requirements.

Model-group selection

The catalog groups range from JHM1 to JHM31; displacement and performance checks stay specific to the selected model.

High starting torque

Radial piston construction helps loaded winches, hoists and rotary drives start smoothly under heavy load.

Matched interfaces

Parallel-key, external-spline and internal-spline shaft options, plus compatible valve plates, require application review.

Technical Data

Verified series specifications

Product Type	Radial piston hydraulic motor
Series	JHM Series
Output Characteristic	Stable low-speed, high-torque output
Displacement	63-4828 mL/rev across JHM1-JHM31; preliminary catalog reference
Pressure / speed / torque	Confirm for the selected model, hydraulic circuit and duty
Valve plate	D31, D47, D90 or D250 compatibility must be confirmed by model group
Optional Configuration	Final configuration requires engineering confirmation
Applications	Winches, marine deck machinery, industrial and mobile hydraulic equipment

Catalog Reference

Catalog model references

Catalog values are preliminary references; final duty, pressure and interface require JST engineering confirmation.

Filter model group

Showing all 7 models

Model group	Displacement	Verified catalog data	Source
JHM1	64–159 mL/rev	Rated torque: 253.75–505 N·m Rated pressure: 20–25 MPa Peak pressure: 25–31.5 MPa Speed: 15–1500 r/min Valve plate: D31	Catalog p.23
JHM2	113–276 mL/rev	Rated torque: 420–670 N·m Rated pressure: 16–25 MPa Peak pressure: 20–32 MPa Speed: 8–1250 r/min Valve plate: D31	Catalog p.24
JHM3	181–380 mL/rev	Rated torque: 710–1040 N·m Rated pressure: 16–25 MPa Peak pressure: 20–32 MPa Speed: 6–800 r/min Valve plate: D31, D47	Catalog p.25
JHM6	397–754 mL/rev	Rated torque: 1483–1833 N·m Rated pressure: 16–25 MPa Peak pressure: 20–32 MPa Speed: 4–800 r/min Valve plate: D31, D47	Catalog p.26
JHM11	682–1301 mL/rev	Rated torque: 2667–3512 N·m Rated pressure: 16–25 MPa Peak pressure: 20–32 MPa Speed: 4–400 r/min Valve plate: D31, D47	Catalog p.27
JHM16	1413–3041 mL/rev	Rated torque: 5138–7326 N·m Rated pressure: 16–25 MPa Peak pressure: 20–32 MPa Speed: 2–300 r/min Valve plate: D47, D90	Catalog p.28
JHM31	2553–4828 mL/rev	Rated torque: 9135–13508 N·m Rated pressure: 16–25 MPa Peak pressure: 20–32 MPa Speed: 1–250 r/min Valve plate: D90, D250	Catalog p.29

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Applications

Typical applications

Marine & Offshore: winches, mooring drives, steering thrusters, jack-up systems.
Industrial: shredders, compactors, heavy rotary machinery and industrial drive systems.
Construction & Heavy Equipment: hoisting/lifting drives, rotary drilling units, heavy-duty handling systems.

Selection Guide

Information used for preliminary selection

Start with required torque, speed, pressure, flow and duty cycle.
Confirm the JHM model group, displacement, shaft type and compatible valve plate.
Final configuration requires duty, pressure and interface confirmation.

Engineering Notes

Series-specific review points

Catalog model groups: JHM1, JHM2, JHM3, JHM6, JHM11, JHM16 and JHM31.
Preliminary catalog displacement range: 63-4828 mL/rev across the series.
Valve-plate compatibility varies by model group; D31, D47, D90 and D250 references require configuration confirmation.
Pressure, speed, torque, shaft and mounting choices must be checked for the selected model and duty.

Catalog values are preliminary references; final duty, pressure and interface require JST engineering confirmation.

Technical Support