Gearboxes

Gearboxes, also referred to as gearheads or gear reducers, are enclosed systems consisting of a series of integrated gears within a housing unit. Gearboxes are designed to transmit mechanical energy to operate and alter the torque and speed of a driving device, such as an electric motor. At RS Components, we have a variety of industrial gearboxes, including planetary, spur, and ovoid models from leading industry brands, including DKM, Maxon, Panasonic, Portescap, Trident Engineering and out own RS PRO brand.

How does a gearbox work?

Inside a gearbox, there is one of several different types of gears that can be found - these include bevel gears, worm gears, helical gears, spur gears, and planetary gears. These gears are mounted on to shafts and rotate on rolling element bearings.

What type of gearboxes are there?

The most common types of gearboxes are spur and planetary.

  • Spur gearboxes have straight teeth and are mounted on parallel shafts. Spur gearboxes offer a high power transmission efficiency, a constant velocity ratio and have no slip.
  • Planetary gearboxes have the input shaft and output shaft aligned. They are particularly suited to high torque and low-speed applications.

How is the gear ratio defined?

The gear ratio is defined through the number of turns the output shaft will makes when the input shaft is turned once. When the gear ratio is 1:1, the torque and speed are the same. If the ratio is increased to 1:4, the torque is reduced and the maximum speed is significantly increased. If this is reversed to a ratio of 4:1, then the speed is reduced and the torque is increased.

What are gearboxes used for?

Gearboxes are used in various applications depending on the type and gear ratio. This includes machine tools, conveyor systems and elevators, as well as industrial equipment and mining industry applications. Right angle gearboxes can be utilized in rotary tables.


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Description Price Gear Ratio Gearbox Type Maximum Output Torque Shaft Diameter Diameter Overall Length Overall Width Overall Depth Maximum Speed Power Rating Continuous Output Speed Priced to Clear
RS Stock No. 892-9233
Mfr. Part No.R22.10.0 33,1
BrandPortescap
£76.03
Each
Units
33:1 Planetary 2 Nm 4mm 22 mm 46.5mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9224
Mfr. Part No.R16.0 88
BrandPortescap
£109.52
Each
Units
88:1 Planetary 1 Nm 3mm 16 mm 34.2mm - - 7500 (Input)rpm - - -
RS Stock No. 892-9252
Mfr. Part No.K24 0 8
BrandPortescap
£71.76
Each
Units
8:1 Spur 0.7 Nm 3mm 24 mm 25.4mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9246
Mfr. Part No.R22.10.0 190
BrandPortescap
£100.69
Each
Units
190:1 Planetary 2 Nm 4mm 22 mm 54mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9227
Mfr. Part No.R16.0 166
BrandPortescap
£55.63
Each
Units
166:1 Planetary 1 Nm 3mm 16 mm 34.2mm - - 7500 (Input)rpm - - -
RS Stock No. 892-9230
Mfr. Part No.R22.10.0 19.4
BrandPortescap
£95.70
Each
Units
19.4:1 Planetary 2 Nm 4mm 22 mm 46.5mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9255
Mfr. Part No.K24.0 20
BrandPortescap
£72.84
Each
Units
20:1 Spur 0.7 Nm 3mm 24 mm 28.4mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9265
Mfr. Part No.R32.0 17,4
BrandPortescap
£294.91
Each
Units
17.4:1 Planetary 20 Nm 8mm 32 mm 58.5mm - - 6000 (Input)rpm - - -
RS Stock No. 892-9243
Mfr. Part No.K24 0 5
BrandPortescap
£71.76
Each
Units
5:1 Spur 0.7 Nm 3mm 24 mm 25.4mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9215
Mfr. Part No.R16.0 22
BrandPortescap
£109.52
Each
Units
22:1 Planetary 1 Nm 3mm 16 mm 30.1mm - - 7500 (Input)rpm - - -
RS Stock No. 892-9211
Mfr. Part No.R16.0 5.5
BrandPortescap
£107.37
Each
Units
5.5:1 Planetary 1 Nm 3mm 16 mm 26mm - - 7500 (Input)rpm - - -
RS Stock No. 892-9237
Mfr. Part No.R22.10.0 111
BrandPortescap
£103.00
Each
Units
111:1 Planetary 2 Nm 4mm 22 mm 54mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9259
Mfr. Part No.K24.0 32
BrandPortescap
£71.76
Each
Units
32:1 Spur 0.7 Nm 3mm 24 mm 28.4mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9271
Mfr. Part No.R32.0 416
BrandPortescap
£181.18
Each
Units
416:1 Planetary 20 Nm 8mm 32 mm 70.5mm - - 6000 (Input)rpm - - -
RS Stock No. 892-9268
Mfr. Part No.K24.0 128
BrandPortescap
£71.76
Each
Units
128:1 Spur 0.7 Nm 3mm 24 mm 28.4mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9261
Mfr. Part No.K24 0 800
BrandPortescap
£94.59
Each
Units
800:1 Spur 0.7 Nm 3mm 24 mm 31.4mm - - 5000 (Input)rpm - - -
RS Stock No. 892-9218
Mfr. Part No.R13 0 88
BrandPortescap
£100.34
Each
Units
88:1 Planetary 0.5 Nm 3mm 13 mm 32.7mm - - 7500 (Input)rpm - - -
RS Stock No. 892-9221
Mfr. Part No.R16.0 484
BrandPortescap
£121.89
Each
Units
484:1 Planetary 1 Nm 3mm 16 mm 38.3mm - - 7500 (Input)rpm - - -
RS Stock No. 892-9249
Mfr. Part No.R22.10.0 641
BrandPortescap
£63.24
Each
Units
641:1 Planetary 2 Nm 4mm 22 mm 54mm - - 5000 (Input)rpm - - -