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. 420-603
BrandRS PRO
SGD40.06
Each
units
1:1 L - 5mm - 57.3mm 30mm 57.3mm 500rpm - -
RS Stock No. 748-443
Mfr. Part No.332.31.3
BrandHuco
SGD22.55
Each
units
1:1 L 0.11 Nm 4mm - 30.5mm 30.5mm 18.7mm 1000rpm - 500 rpm
RS Stock No. 250-3315
Mfr. Part No.166156
BrandMaxon
SGD328.07
Each
units
4.8:1 Planetary 1.13 Nm - 32 mm - - - - - -
RS Stock No. 363-6315
Mfr. Part No.IP57-M1-10
SGD399.75
Each
units
10:1 Planetary 12 Nm 12.69mm 57 mm 67.75mm - - - - -
RS Stock No. 748-437
Mfr. Part No.332.31.2
BrandHuco
SGD48.15
Each
units
1:1 L 0.68 Nm 4mm - 30.5mm 30.5mm 18.7mm - - -
RS Stock No. 323-4975
Mfr. Part No.110339
BrandMaxon
SGD221.73
Each
units
84:1 Planetary 1.2 Nm 4mm 22 mm 36.2mm - - - - -
RS Stock No. 441-5131
Mfr. Part No.GS38.0200
SGD107.69
Each
units
200:1 Spur 1.8 Nm 6mm - 38mm 38mm 23.5mm - - -
RS Stock No. 892-9265
Mfr. Part No.R32.0 17,4
BrandPortescap
SGD518.41
Each
units
17.4:1 Planetary 20 Nm 8mm 32 mm 58.5mm - - 6000 (Input)rpm - -
RS Stock No. 424-071
Mfr. Part No.MX9G20B
BrandPanasonic
SGD190.68
Each
units
20:1 Spur 4.51 Nm 12mm - 90mm 90mm 35mm 67.5rpm 40 W -
RS Stock No. 892-9249
Mfr. Part No.R22.10.0 641
BrandPortescap
SGD230.47
Each
units
641:1 Planetary 2 Nm 4mm 22 mm 54mm - - 5000 (Input)rpm - -
RS Stock No. 441-5175
Mfr. Part No.GP32.0014
SGD303.23
Each
units
14:1 Planetary 1.12 Nm 6mm 32 mm - - - - - -
RS Stock No. 718-874
Mfr. Part No.MRIG11 (25:1)
SGD188.78
Each
units
25:1 Spur 4 Nm - - - 56mm 41mm - - -
RS Stock No. 624-4638
Mfr. Part No.MZ9G100B
BrandPanasonic
SGD328.65
Each
units
100:1 Spur 19.6 Nm 15mm - 90mm 90mm 43mm 13.75rpm 60 W -
RS Stock No. 224-3580
Mfr. Part No.81037005
BrandCrouzet
SGD203.57
Each
units
500:1 Spur 5 Nm 8mm - 65mm 65mm 32mm - - -
RS Stock No. 424-077
Mfr. Part No.MX9G50B
BrandPanasonic
SGD202.87
Each
units
50:1 Spur 9.8 Nm 12mm - 90mm 90mm 35mm 27rpm 40 W -
RS Stock No. 363-6309
Mfr. Part No.IP57-M1-5
SGD370.16
Each
units
5:1 Planetary 12 Nm 12.69mm 57 mm 54mm - - - - -
RS Stock No. 224-3552
Mfr. Part No.81037010
BrandCrouzet
SGD203.57
Each
units
25:1 Spur 5 Nm 8mm - 65mm 65mm 32mm - - -
RS Stock No. 441-5096
Mfr. Part No.GS38.0018
SGD88.44
Each
units
18:1 Spur 0.6 Nm 6mm - 38mm 38mm 18.5mm - - -
RS Stock No. 445-0184
Mfr. Part No.110313
BrandMaxon
SGD83.80
Each
units
4.1:1 Planetary 0.3 Nm 3mm 13 mm 16mm - - - - -
RS Stock No. 336-422
Mfr. Part No.P5-G23L82
SGD50.59
Each
units
125:1 Ovoid 0.8 Nm 4mm - - 47.6mm 16.5mm 40rpm - -