Gearboxes

Gearboxes are often also referred to as gearheads or gear reducers. A gearbox is a unit consisting of a series of integrated gears within a housing. Gearboxes are designed to alter torque and speed between a driving device such as an electric motor.


Inside a gearbox, there is one of several different types of gears that can be found -including 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.


Gearbox applications - Gearboxes are used in various applications depending on the type and gear ratio. This includes machine tools, conveyor systems and industrial equipment. 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. 420-603
BrandRS PRO
£22.02
Each
Units
1:1 L - 5mm - 57.3mm 30mm 57.3mm 500rpm - - -
RS Stock No. 455-2628
Mfr. Part No.52747
£14.23
Each
Units
500:1 Ovoid 50 Ncm 4mm - - 55mm 12.5mm - - - -
RS Stock No. 748-437
Mfr. Part No.332.31.2
BrandHuco
£24.03
Each
Units
1:1 L 0.68 Nm 4mm - 30.5mm 30.5mm 18.7mm - - - -
RS Stock No. 336-444
Mfr. Part No.P5-G11L82
£26.16
Each
Units
25:1 Ovoid 0.7 Nm 4mm - - 47.6mm 16.5mm 200rpm - - -
RS Stock No. 299-0062
Mfr. Part No.390.02.11
BrandHuco
£145.19
Each
Units
1:1 T 7.7 Nm 15.01mm - 4.094in 4.843in 2.047in - - - -
RS Stock No. 420-5041
Mfr. Part No.203116
BrandMaxon
£258.44
Each
Units
15:1 Planetary 11.3 Nm 12mm 42 mm 55.5mm - - - - - -
RS Stock No. 445-0184
Mfr. Part No.110313
BrandMaxon
£41.20
Each
Units
4.1:1 Planetary 0.3 Nm 3mm 13 mm 16mm - - - - - -
RS Stock No. 624-4559
Mfr. Part No.MZ9G3B
BrandPanasonic
£149.59
Each
Units
3:1 Spur 1.37 Nm 15mm - 90mm 90mm 43mm 458.3rpm 60 W - -
RS Stock No. 624-4537
Mfr. Part No.MX8G100B
BrandPanasonic
£99.95
Each
Units
100:1 Spur 7.84 Nm 10mm - 80mm 80mm 30mm 13.5rpm 25 W - -
RS Stock No. 624-4509
Mfr. Part No.MX8G15B
BrandPanasonic
£85.36
Each
Units
15:1 Spur 1.96 Nm 10mm - 80mm 80mm 30mm 90rpm 25 W - -
RS Stock No. 748-443
Mfr. Part No.332.31.3
BrandHuco
£12.23
Each
Units
1:1 L 0.11 Nm 4mm - 30.5mm 30.5mm 18.7mm 1000rpm - 500 rpm -
RS Stock No. 336-264
Mfr. Part No.RG1/8.0640
£53.50
Each
Units
640:1 Ovoid - 4mm - - 50mm - - - - -
RS Stock No. 624-4616
Mfr. Part No.MZ9G15B
BrandPanasonic
£166.23
Each
Units
15:1 Spur 6.76 Nm 15mm - 90mm 90mm 43mm 91.66rpm 60 W - -
RS Stock No. 424-077
Mfr. Part No.MX9G50B
BrandPanasonic
£110.04
Each
Units
50:1 Spur 9.8 Nm 12mm - 90mm 90mm 35mm 27rpm 40 W - -
RS Stock No. 390-8496
Mfr. Part No.8H60N
£22.25
Each
Units
1/60 - 3.9 Nm 8mm - 80mm 80mm 65mm 30rpm - - -
RS Stock No. 363-6315
Mfr. Part No.IP57-M1-10
£226.69
Each
Units
10:1 Planetary 12 Nm 12.69mm 57 mm 67.75mm - - - - - -
RS Stock No. 424-112
Mfr. Part No.MY9G3B
BrandPanasonic
£149.59
Each
Units
3:1 Spur 1.37 Nm 15mm - 90mm 90mm 43mm 458.3rpm 60 W - -
RS Stock No. 624-4543
Mfr. Part No.MX8G30B
BrandPanasonic
£91.28
Each
Units
30:1 Spur 3.82 Nm 10mm - 80mm 80mm 30mm 45rpm 25 W - -
RS Stock No. 624-4587
Mfr. Part No.MZ9G20B
BrandPanasonic
£108.66
Each
Units
20:1 Spur 9.02 Nm 15mm - 90mm 90mm 43mm 68.75rpm 60 W - -
RS Stock No. 363-6359
Mfr. Part No.IP57-M2-100
£279.96
Each
Units
100:1 Planetary 24 Nm 12.69mm 57 mm 79.75mm - - - - - -
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