Planetary Gearboxes and Transmission Units

JSC Series Hydraulic Transmission Units

JSC hydraulic transmission units combine motor, planetary gearbox, brake and valve options for winch, track, slewing and industrial drives.

Focus: Motor, reducer and brake integration
Engineering boundary: Final sizing, configuration and interface require JST engineering confirmation.

Product Overview

Series capability and selection context

JSC hydraulic transmission units combine motor, planetary gearbox, brake and valve options for winch, track, slewing and industrial drives.

Hydraulic motor, planetary reducer, brake and valve functions can be matched as one transmission unit.

Reducer ratio, output torque and speed can be selected for crawler, winch, slewing or rotary drive duty.

JST can compare mounting dimensions and hydraulic parameters for replacement of imported transmission units.

Technical Data

Product Type	Integrated hydraulic transmission unit
Supply Scope	Hydraulic motor, planetary reducer, brake and valve options
Reduction Ratio	Custom ratio selected by output speed and torque
Output Interface	Shaft, spline, flange, drum or custom connection
Selection Focus	Output torque, output speed, pressure, flow, brake and mounting drawing
Applications	Winch, crawler, slewing, rotary and industrial hydraulic drives

Configuration Reference

Final sizing, configuration and interface require JST engineering confirmation.

Brake	Integrated holding or parking brake options for winches, slope holding and safety requirements.
Valve functions	Distributor, balance, relief or control valve options for circuit matching and load control.
Output interface	Shaft, spline, flange, drum or custom connection matched to machine structure.

Applications

Winch drives: hydraulic winches for construction, marine, mining and industrial pulling systems.
Track and wheel drives: mobile machines, crawler carriers, drilling rigs and special vehicles.
Slewing and rotary drives: cranes, turntables, drilling equipment and indexing systems.
Industrial hydraulic drives: conveyors, mixers, rollers and low-speed high-torque rotating machines.
Replacement projects: alternatives for imported hydraulic transmission units where cost or delivery is difficult.

Selection Guide

Integrated hydraulic drive package: motor, planetary gearbox, brake, distributor and valve options can be engineered as one assembly.
High torque density: planetary reduction provides strong output torque in a compact housing.
Flexible ratio and torque: reduction ratio, output torque and motor selection can be matched to speed and load requirements.
Brake and valve integration: holding brake, balance valve, relief valve and control options can be selected according to duty.
OEM mounting support: flange, shaft, output interface, port layout and housing design can be adapted to machine installation.
Replacement and retrofit projects: JST can review imported gearbox or transmission unit data and develop compatible alternatives.
Output torque: define continuous torque, peak torque and shock load.
Output speed: target rpm determines reduction ratio together with motor displacement and flow.
Selection should start from the output requirement and then work back to the motor and hydraulic circuit. Key data includes:

Engineering Notes

Drive layout: Hydraulic motor + planetary reducer + brake or valve options in one compact assembly.
Output torque: Configured by gearbox size and ratio; check continuous torque, peak torque and shock load.
Reduction ratio: Custom ratio available to balance output speed and torque multiplication.
Input motor: Selected by pressure and flow; motor displacement affects speed, torque and efficiency.
Brake: Integrated holding or parking brake options for winches, slope holding and safety requirements.
Valve functions: Distributor, balance, relief or control valve options for circuit matching and load control.
Output interface: Shaft, spline, flange, drum or custom connection matched to machine structure.
Environment: Industrial, mobile, mining, marine and outdoor duty; sealing, coating and lubrication should be confirmed.

Final sizing, configuration and interface require JST engineering confirmation.

Technical Support