JST Series — Hydraulic Travel Motor Final Drive Units
Short Description:
Reliable. Powerful. Direct-Drive Excellence.The JST Series Travel Motor Units combine hydraulic motor, planetary final drive (single- or double-stage), brake, and valve block into rugged direct-drive drivetrain assemblies. Featuring shell-drive design, JST units can mount directly to wheels or track drive sprockets. Their robust construction handles both radial and axial loads generated during travel and turning. Compact in structure, pleasing in appearance, and high in performance, these units are ideal for replacing imported final drives in heavy duty tracked machines.
• Shell-drive direct connection: motor body drives sprocket or track wheel directly, reducing connection parts and increasing reliability.
• High radial and axial load capacity: uses heavy duty tapered roller bearings / cone-roller bearing sets, built to resist track torque, turning loads, and side-thrust.
• Planetary gear reducer(s): single- or two-stage planetary reduction for high torque multiplication, allowing machines to push and climb under load with low motor displacement.
• Integrated braking and control: built-in brake and valve block allows safe parking, smooth stopping, and resistance to rollback.
• Efficiency under harsh duty: optimized lubrication paths, quality sealing, and precise machining reduce losses; high overall efficiency even under load.
• Interchangeable with imported units: dimensions, mounting bolt patterns, sprocket diameters compatible with standard tracked machines.
• Torque output: continuous and peak torque optimized for medium to large tracked machines.
• Reduction ratio: single-stage or two-stage planetary reducers, customizable gear ratios per machine duty.
• Working pressure: rated for high hydraulic pressures (e.g. ~300-400 bar), depending on model.
• Speed range: low travel speeds under heavy loads; top travel speeds dependent on sprocket pitch and hydraulic flow.
• Shaft / mount types: multiple spline / keyed / flange / shell drive options; built-in sprocket or interface for sprocket wheel.
• Sealing & bearings: marine / offroad quality seals, tapered roller / cone bearings for combined radial + axial loads; optional external bearings.
• Dimension options: multiple size mounts, sprocket diameters, bolt patterns to fit tracked machines & crawler wheels.
• Excavators & Drills: crawler excavators, non-excavation drills, rock drills, rotary drills, down-the-hole drills.
• Tunnel Boring & Tunneling Machinery: full track travel / wheel driven systems.
• Track & Mobile Vehicles: crawler carriers, engineering vehicles, tracked crawler road machinery.
• Mining & Geotechnical Equipment: machines that operate in mining / rock / soil conditions with high side loads.
• Construction Machines: track drives / wheel drives for undercarriage of dozers, shield machines, tracked cranes.