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. 103-3980
Mfr. Part No.8GBK50BH
BrandDKM
MYR496.78
Each
units
50:1 - - 10mm - 80mm 80mm - - - -
RS Stock No. 103-4027
Mfr. Part No.8GBK150BH
BrandDKM
MYR448.33
Each
units
150:1 - - 10mm - 80mm 80mm - - - -
RS Stock No. 103-3964
Mfr. Part No.9GBK50BH
BrandDKM
MYR519.38
Each
units
50:1 - - 12mm - 90mm 90mm - - - -
RS Stock No. 103-3972
Mfr. Part No.9GBK100BH
BrandDKM
MYR385.33
Each
units
100:1 - - 12mm - 90mm 90mm - - - -
RS Stock No. 103-3930
Mfr. Part No.9XD10GG
BrandDKM
MYR408.75
Each
units
10:1 - - - - 90mm 90mm 40mm - - -
RS Stock No. 103-4035
Mfr. Part No.6GBD3BH
BrandDKM
MYR364.11
Each
units
3:1 - - 8mm - 60mm 60mm - - - -
RS Stock No. 103-3931
Mfr. Part No.9PFK5BH
BrandDKM
MYR452.49
Each
units
5:1 - 3.99 Nm 15mm - 90mm 90mm 72mm 360rpm - -
RS Stock No. 103-3984
Mfr. Part No.8GBK180BH
BrandDKM
MYR451.38
Each
units
180:1 - - 10mm - 80mm 80mm - - - -
RS Stock No. 103-4040
Mfr. Part No.6GBD120BH
BrandDKM
MYR239.66
Each
units
120:1 - - 8mm - 60mm 60mm - - - -
RS Stock No. 103-4026
Mfr. Part No.8GBK15BH
BrandDKM
MYR398.72
Each
units
15:1 - - 10mm - 80mm 80mm - - - -
RS Stock No. 103-3938
Mfr. Part No.9PFK120BH
BrandDKM
MYR436.89
Each
units
120:1 - 19.6 Nm 15mm - 90mm 90mm 72mm 13 rpm @ 50 Hz, 15 rpm @ 60 Hz - -
RS Stock No. 103-4028
Mfr. Part No.8GBK120BH
BrandDKM
MYR342.11
Each
units
120:1 - - 10mm - 80mm 80mm - - - -
RS Stock No. 103-3965
Mfr. Part No.9GBK3BH
BrandDKM
MYR332.10
Each
units
3:1 - - 12mm - 90mm 90mm - - - -
RS Stock No. 103-3973
Mfr. Part No.8XD10GG
BrandDKM
MYR203.10
Each
units
10:1 - - - - 80mm 80mm 30.5mm - - -
RS Stock No. 103-3932
Mfr. Part No.9PFK50BH
BrandDKM
MYR432.05
Each
units
50:1 - 19.6 Nm 15mm - 90mm 90mm 72mm 30 rpm @ 50 Hz, 36 rpm @ 60 Hz - -
RS Stock No. 103-3970
Mfr. Part No.9GBK150BH
BrandDKM
MYR654.16
Each
units
150:1 - - 12mm - 90mm 90mm - - - -
RS Stock No. 103-3945
Mfr. Part No.9PBK200BH
BrandDKM
MYR698.53
Each
units
200:1 - 19.6 Nm 15mm - 90mm 90mm 72mm 7.5 rpm @ 50 Hz, 9 rpm @ 60 Hz - -
RS Stock No. 103-3933
Mfr. Part No.9PFK3BH
BrandDKM
MYR238.53
Each
units
3:1 - 2.39 Nm 15mm - 90mm 90mm 72mm 600rpm - -
RS Stock No. 103-3939
Mfr. Part No.9PFK100BH
BrandDKM
MYR440.17
Each
units
100:1 - 19.6 Nm 15mm - 90mm 90mm 72mm 15 rpm @ 50 Hz, 18 rpm @ 60 Hz - -
RS Stock No. 103-3968
Mfr. Part No.9GBK180BH
BrandDKM
MYR450.49
Each
units
180:1 - - 12mm - 90mm 90mm - - - -