Gear reducers

221 companies | 1420 products
Bevel gearbox

Cost effectively...

Worm gearbox / for valve actuators / quarter-turn

The AB range of quarter-turn...

Planetary gear reducer / high-power / modular

maxon GPX gearheads feature...

Planetary gear reducer / precision

Precision spur- and...

Planetary gear reducer / precision

Precision spur- and...

Planetary gear reducer / precision

Precision spur- and...

Planetary gear reducer / precision

Planetary Gearheads Their robust construction...

Spur pinion gear reducer

Spur Gearheads A wide range...

Planetary gear reducer / right-angle / industrial

Complete range of modular design planetary...

Planetary gear reducer / industrial / for slewing drive

This wide range of Brevini planetary gear units is specifically...

Planetary gear reducer / winch

These Brevini planetary gear units with rotating outer...

With extended center distance / parallel-shaft

Lifting gears in which the cable drum and...

Helical gear reducer / parallel shaft / single reduction

The S series of single-reduction...

Planetary gear reducer / bevel / right-angle / combined

Bonfigliolis 3/H gearboxes combine the high technology, performance...

The Bonfiglioli VF/W Universal...

Helical gear reducer / worm / right-angle / robust

The right-angle worm gear reducer...

Worm gear reducer / right-angle / aluminum / universal

With its compact built features, the Universal...

Planetary gear reducer / precision

The XTRUE™ Series is a...

Planetary gear reducer

True Planetary® gearhead was strongly...

Planetary gear reducer

UltraTRUE™ is a true planetary gearhead...

Helical gear reducer / parallel-shaft

The SMR helical reducer...

Worm gear reducer / right-angle

Tsubaki worm gear reducers provide...

Bevel gear reducer / right-angle

Coming in sizes from small to large,...

Right-angle gear reducer / for asynchronous motors

The RH/RA Series has standard-type...

Bevel gear reducer / helical

The Bevel Helical Gear...

Planetary gear reducer

The Siemens FLENDER planetary gear...

Planetary gear reducer / coaxial

The FLENDER SIP® planetary gear unit...

Helical gear reducer / vertical / for aerator / for wastewater treatment

Siemens' FLENDER Gear Units for aerators are highly...

Planetary gear reducer

The Funk planetary drives offer durability,...

Planetary gear reducer / low-backlash / with flange

New Rp+ is a high-performance...

Planetary gear reducer / low-backlash

The iconic all-rounder planetary...

Planetary gear reducer / low-backlash

Wittenstein proves that innovation...

Planetary gear reducer

The R 30Q is an epicicloidal...

Planetary gear reducer

Epicycloid reduction gearbox ...

Planetary gear reducer

The R 63 Model is a planetary...

Planetary gear reducer

The Gear Box R 63 NEMA 34 is...

Bevel gear reducer / hollow-shaft

Hollow Shaft bevel gearbox with...

Helical gear reducer / bevel / with hollow shaft / compact

Power Jacks' N series are ultra-compact bevel...

Bevel gear reducer / with hollow shaft / compact

The device comes with a compact and lightweight design....

Planetary gear reducer

The Performax® series is manufactured...

Planetary gear reducer

The Performax® Plus series is manufactured by Ebm-Papst...

Planetary gear reducer / high-precision

The Focus planetary gearhead features strict tolerances...

Spur pinion gear reducer

The regular modular system by ZEITLAUF® antriebstechnik...

How to choose this product

gear-reducer

A gear reducer is a gearing assembly that can reduce rotational speed while increasing torque in a mechanical system, or increase speed while reducing torque (in which case it is called a multiplier).

Applications

These devices are extremely common in a wide range of mechanical transmission applications, including automobile and motorcycle transmissions, in machine tools, variable speed drives and gear motors.

Technologies

There are four basic types of gear reducer:
- Straight (or straight sprocket, with straight-cut or cylindrical teeth)
- Worm gear (worm and wheel), with straight or helical teeth
- Bevel gear, with straight or helical teeth
- Planetary (epicyclic) gear

The term helical refers to tooth profile. Helical teeth can be found on any gear type. Note that in a rotating mechanism, speed and torque are inversely proportional.

How to choose

Choice of gear reducer will depend on the speed and torque of both the input and output shafts. These data can be used to calculate the reduction ratio. Another factor is the relative orientation of the input and output shafts: coaxial, parallel, perpendicular, convergent or not.

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