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. 299-0078
Mfr. Part No.391.02.11
BrandHuco
£167.34
Each
Units
1:1 T 4.1 Nm 15.01mm - 104mm 123mm 52mm - - - -
RS Stock No. 718-868
Mfr. Part No.MRIG06 (25:2)
£87.26
Each
Units
25:2 Spur 2.5 Nm - - - 56mm 41mm - - - -
RS Stock No. 624-4521
Mfr. Part No.MX8G20B
BrandPanasonic
£91.28
Each
Units
20:1 Spur 2.55 Nm 10mm - 80mm 80mm 30mm 67.5rpm 25 W - -
RS Stock No. 424-055
Mfr. Part No.MX8G120B
BrandPanasonic
£99.94
Each
Units
120:1 Spur 7.84 Nm 10mm - 80mm 80mm 30mm 11.25rpm 25 W - -
RS Stock No. 424-128
Mfr. Part No.MY9G20B
BrandPanasonic
£175.61
Each
Units
20:1 Spur 9.02 Nm 15mm - 90mm 90mm 43mm 68.75rpm 60 W - -
RS Stock No. 718-874
Mfr. Part No.MRIG11 (25:1)
£106.76
Each
Units
25:1 Spur 4 Nm - - - 56mm 41mm - - - -
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. 250-3315
Mfr. Part No.166156
BrandMaxon
£164.53
Each
Units
4.8:1 Planetary 1.13 Nm - 32 mm - - - - - - -
RS Stock No. 423-951
Mfr. Part No.MY9G150B
BrandPanasonic
£182.23
Each
Units
150:1 Spur 19.6 Nm 15mm - 90mm 90mm 43mm 9.16rpm 60 W - -
RS Stock No. 718-925
Mfr. Part No.MRIG34 (500:1)
£142.72
Each
Units
500:1 Spur 7 Nm - - - 56mm 41mm - - - -
RS Stock No. 299-0090
Mfr. Part No.389.02.12
BrandHuco
£167.11
Each
Units
2:1 T 4.1 Nm 15mm - 104mm 123mm 52mm - - - -
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. 441-5169
Mfr. Part No.GP32.0005
£129.61
Each
Units
5.2:1 Planetary 1.12 Nm 6mm 32 mm 26.6mm - - - - - -
RS Stock No. 299-0107
Mfr. Part No.390.02.12
BrandHuco
£148.02
Each
Units
2:1 T 4.1 Nm 15.01mm - 4.094in 4.843in 2.047in - - - -
RS Stock No. 445-0207
Mfr. Part No.110315
BrandMaxon
£59.46
Each
Units
67:1 Planetary 0.45 Nm 3mm 13 mm 23.7mm - - - - - -
RS Stock No. 424-059
Mfr. Part No.MX8G10XB
BrandPanasonic
£40.76
Each
Units
10:1 Spur - - - 80mm 80mm 30mm - 40 W - -
RS Stock No. 624-4622
Mfr. Part No.MZ9G50B
BrandPanasonic
£175.61
Each
Units
50:1 Spur 19.6 Nm 15mm - 90mm 90mm 43mm 27.5rpm 60 W - -
RS Stock No. 336-422
Mfr. Part No.P5-G23L82
£28.61
Each
Units
125:1 Ovoid 0.8 Nm 4mm - - 47.6mm 16.5mm 40rpm - - -
RS Stock No. 424-184
Mfr. Part No.MX6G20BA
BrandPanasonic
£82.61
Each
Units
20:1 Spur 0.66 Nm 8mm - 60mm 60mm 24.5mm 62.5rpm 6 W - -
RS Stock No. 424-138
Mfr. Part No.MX9G10XB
BrandPanasonic
£56.76
Each
Units
10:1 Spur - 12mm - 90mm 90mm 35mm - 40 W - -