Gearboxes & Reducers

Housings · gear shafts · carriers · spares

The load-carrying parts of a reducer are machined here: housings, gear shafts, carriers, internal ring gears and repair spares. Non-standard units are made to drawing; on planetary builds the tooth count and module follow the ratio and the torque. Bearing bores are not cut to nominal size — the mating bearing or journal is measured first, and the bore is set to that. Gears and shafts share one datum, so the assembly is not fighting itself.

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Blue gearbox at Linyao with its output shaft wrapped in protective film — Painted gearbox, output shaft protected for dispatch

Specifications

Parts machined: Housings · gear shafts · carriers · internal gears · end covers
Housing: Cast or welded; bearing bores sized to the mating part
Gearing: Spur · helical · internal, module and grade per drawing
Inspection: Centre distance · coaxiality · pitch · runout

Typical use

Housings and gearing for custom reducers
Carriers and internal gears for planetary units
Reducer repair and spare parts
Drives for crushers, conveyors and hoists

Whole-machine design is not our scope: send a drawing, or the measured dimensions of the unit you are replacing, and we machine the parts, the housing and the spares. Clearances are set from the bearings and gears actually on your machine.

Typical process

01
Drawing review
ratio, module and hole layout
02
Blank check
mill certificate and allowance
03
Rough machining
housing and shaft separately
04
Stress relief
before finishing
05
Bearing bores
sized to the measured bearing
06
Hobbing / shaping
to module and accuracy grade
07
Heat treatment
quenching and tempering, or tooth hardening
08
Final inspection and packing
centre distance, runout, fit record

View parts

Cast reducer with round B5 input flange, foot mounting holes, brass oil plug and solid output shaft with tapped end hole.

Inline Helical Gear Reducer with B5 Motor Flange

Inline helical gear reducer with B5 motor flange, solid output shaft with tapped centre hole and foot mounting. Reduces motor speed and multiplies torque for general industrial drives.

Right-angle gear drive box: square housing with mounting holes, vertical shaft on top, horizontal keyed shaft on the side.

T-Type Spiral Bevel Gear Drive Box

T-type spiral bevel gear drive box turns power through 90° between input and output shafts. Basic 1:1 ratio, grey iron housing, oil-bath lubrication.

Ribbed cast iron housing of a parallel shaft gearbox, with split upper cover, large keyed output shaft, small input shaft and foot mounting base.

Parallel Shaft Hardened Tooth Surface Industrial Gearbox

Heavy-duty parallel shaft gearbox for reducing speed and increasing output torque in continuous industrial drive systems. The housing is a ribbed cast iron casting, with hardened tooth surface helical gears and oil bath lubrication.

Housings · flanges · couplings · structures

Bearings & Machined Parts

Need us to confirm fixturing and operations against your drawing? Send the part size, material and quantity; we will review the process against the machines we have.

Send a drawing, get a quote