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. 336-416
Mfr. Part No.P5-G27L82
£28.61
Each
Units
250:1 Ovoid 0.8 Nm 4mm - - 47.6mm 16.5mm 20rpm - - -
RS Stock No. 624-4565
Mfr. Part No.MX8G50B
BrandPanasonic
£99.95
Each
Units
50:1 Spur 6.73 Nm 10mm - 80mm 80mm 30mm 27rpm 25 W - -
RS Stock No. 423-949
Mfr. Part No.MY9G5B
BrandPanasonic
£149.59
Each
Units
5:1 Spur 2.25 Nm 15mm - 90mm 90mm 43mm 275rpm 60 W - -
RS Stock No. 624-4571
Mfr. Part No.MZ9G5B
BrandPanasonic
£149.59
Each
Units
5:1 Spur 2.25 Nm 15mm - 90mm 90mm 43mm 275rpm 60 W - -
RS Stock No. 332-868
Mfr. Part No.P5-G01L82
£24.24
Each
Units
25:6 Ovoid 0.2 Nm 4mm - - 47.6mm 16.5mm 1200rpm - - -
RS Stock No. 424-049
Mfr. Part No.MX6G180B
BrandPanasonic
£89.88
Each
Units
180:1 Spur 2.45 Nm 8mm - 60mm 60mm 24.5mm 6.9rpm 6 W - -
RS Stock No. 420-5063
Mfr. Part No.203123
BrandMaxon
£279.33
Each
Units
74:1 Planetary 22.5 Nm 12mm 42 mm 70mm - - - - - -
RS Stock No. 624-4515
Mfr. Part No.MX8G10B
BrandPanasonic
£85.36
Each
Units
10:1 Spur 1.27 Nm 10mm - 80mm 80mm 30mm 135rpm 25 W - -
RS Stock No. 624-4600
Mfr. Part No.MZ9G30B
BrandPanasonic
£175.61
Each
Units
30:1 Spur 13 Nm 15mm - 90mm 90mm 43mm 45.8rpm 60 W - -
RS Stock No. 423-983
Mfr. Part No.MX9G3B
BrandPanasonic
£97.53
Each
Units
3:1 Spur 0.66 Nm 12mm - 90mm 90mm 35mm 450rpm 40 W - -
RS Stock No. 224-3552
Mfr. Part No.81037010
BrandCrouzet
£113.88
Each
Units
25:1 Spur 5 Nm 8mm - 65mm 65mm 32mm - - - -
RS Stock No. 423-989
Mfr. Part No.MX9G5B
BrandPanasonic
£97.53
Each
Units
5:1 Spur 1.08 Nm 12mm - 90mm 90mm 35mm 270rpm 40 W - -
RS Stock No. 299-0056
Mfr. Part No.389.02.11
BrandHuco
£156.67
Each
Units
1:1 T 7.7 Nm 15mm - 104mm 123mm 52mm - - - -
RS Stock No. 323-4953
Mfr. Part No.110338
BrandMaxon
£103.95
Each
Units
19:1 Planetary 0.8 Nm 4mm 22 mm 29.4mm - - - - - -
RS Stock No. 624-4486
Mfr. Part No.MX8G3B
BrandPanasonic
£85.36
Each
Units
3:1 Spur 0.39 Nm 10mm - 80mm 80mm 30mm 450rpm 25 W - -
RS Stock No. 336-258
Mfr. Part No.RG1/8.0160
£47.92
Each
Units
160:1 Ovoid - 4mm - - 50mm - - - - -
RS Stock No. 224-3580
Mfr. Part No.81037005
BrandCrouzet
£113.88
Each
Units
500:1 Spur 5 Nm 8mm - 65mm 65mm 32mm - - - -
RS Stock No. 424-122
Mfr. Part No.MZ9G10XB
BrandPanasonic
£129.62
Each
Units
10:1 Spur - - - 90mm 90mm 43mm - 60 W - -
RS Stock No. 423-961
Mfr. Part No.MY9G200B
BrandPanasonic
£182.23
Each
Units
200:1 Spur 19.6 Nm 15mm - 90mm 90mm 43mm 6.87rpm 60 W - -
RS Stock No. 363-6343
Mfr. Part No.IP57-M2-50
£288.05
Each
Units
50:1 Planetary 24 Nm 12.69mm 57 mm 79.75mm - - - - - -