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
RS Stock No. 441-5147
Mfr. Part No.GS38.0500
MYR457.76
Each
units
500:1 Spur 2 Nm 6mm - 38mm 38mm 26mm - - -
RS Stock No. 441-5131
Mfr. Part No.GS38.0200
MYR434.90
Each
units
200:1 Spur 1.8 Nm 6mm - 38mm 38mm 23.5mm - - -
RS Stock No. 336-264
Mfr. Part No.RG1/8.0640
MYR380.99
Each
units
640:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 441-5169
Mfr. Part No.GP32.0005
MYR904.90
Each
units
5.2:1 Planetary 1.12 Nm 6mm 32 mm 26.6mm - - - - -
RS Stock No. 441-5103
Mfr. Part No.GS38.0030
MYR369.03
Each
units
30:1 Spur 0.7 Nm 6mm - 38mm 38mm 18.5mm - - -
RS Stock No. 336-286
Mfr. Part No.RG1/8.2560
MYR444.15
Each
units
2560:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 336-258
Mfr. Part No.RG1/8.0160
MYR334.56
Each
units
160:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 336-270
Mfr. Part No.RG1/8.1250
MYR387.33
Each
units
1250:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 441-5153
Mfr. Part No.GS38.0900
MYR457.76
Each
units
900:1 Spur 2 Nm 6mm - 38mm 38mm 26mm - - -
RS Stock No. 440-537
Mfr. Part No.RG1/8.0080
MYR325.23
Each
units
80:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 441-5096
Mfr. Part No.GS38.0018
MYR349.23
Each
units
18:1 Spur 0.6 Nm 6mm - 38mm 38mm 18.5mm - - -
RS Stock No. 441-5125
Mfr. Part No.GS38.0100
MYR390.89
Each
units
100:1 Spur 1.8 Nm 6mm - 38mm 38mm 21mm - - -
RS Stock No. 336-236
Mfr. Part No.RG1/8.0015
MYR237.21
Each
units
15:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 440-543
Mfr. Part No.RG1/8.0320
MYR308.07
Each
units
320:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 336-242
Mfr. Part No.RG1/8.0040
MYR325.23
Each
units
40:1 Ovoid - 4mm - - 50mm - - - -
RS Stock No. 441-5175
Mfr. Part No.GP32.0014
MYR1,197.30
Each
units
14:1 Planetary 1.12 Nm 6mm 32 mm - - - - - -