Spur Gears

Spur gears, also known as straight-cut gears, are a common type of gear used in a wide range of applications. They are designed to transmit large amounts of power by placing them on parallel shafts which rotate in opposite directions.


Spur gears consist of a cylinder with teeth around the outer edge. They have a straight tooth, involute profile which project radially and are parallel to the rotation of the axis. This allows for a smoother operation between each gear and permits greater mounting distances. Spur gears can have a central hub or be hubless and are available in a variety of pitch, hub and bore diameters. The standard pressure angles in spur gears are 14.5, 20 and 25 degrees, and refer to the angle that force is transmitted between the meshing gears.Spur gears are capable of meshing with other gears, with many gears being used to create large gear reductions. When they are meshed the gear with the most teeth is referred to as the gear, whereas the one with smaller teeth is referred to as the pinion. The size of the spur gear is described as "module".


  • Types of spur gears

    Plastic spur gears are commonly made from acetal or nylon and have many positive characteristics including being lightweight, non-rusting and quiet. They enable low cost and large production capabilities and are also able to operate without lubrication. For hygiene reasons, plastic spur gears are an excellent choice for use in industries dealing with food production and medical equipment.Metal spur gears have more strength, load-carrying capacity and heat resilience than their plastic counterpart. They are more dimensionally stable compared to plastic and can be made from many metals such as aluminium, brass and stainless steel.

  • What are the advantages of a spur gear?

    High transmission efficiencyCompact and very easy to installConstant velocity ratioNo slippage unlike belt drivesHighly reliableCan transmit large amounts of power

  • Where are spur gears used?

    Metal cutting machinesMarine enginesMechanical clocks and watchesFuel pumpsWashing machinesGear motors and gear pumpsRack and pinion mechanismsMaterial handling equipmentAutomobile gear boxesSteel and rolling mills

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Nombre de résultats par page
Description Prix Module Number of Teeth Material Bore Diameter Hub Diameter Pitch Diameter Face Width
N° de stock RS 878-7904
MarqueRS PRO
13,45 €
Each
Unité
1 20 Steel 6mm 14mm 20mm 5mm
N° de stock RS 521-7584
MarqueRS PRO
6,97 €
Each
Unité
1 40 POM 8mm 16mm 40mm 6mm
N° de stock RS 521-7534
MarqueRS PRO
5,91 €
Each
Unité
1 28 POM 5mm 11.7mm 28mm 6mm
N° de stock RS 521-7051
MarqueRS PRO
2,18 €
Each
Unité
0.5 28 POM 4mm 8mm 14mm 3mm
N° de stock RS 521-7411
MarqueRS PRO
6,08 €
Each
Unité
0.8 64 POM 6mm 15.5mm 51.2mm 4mm
N° de stock RS 521-6575
MarqueRS PRO
18,09 €
Each
Unité
2 18 Steel 12mm 30mm 36mm 20mm
N° de stock RS 521-7023
MarqueRS PRO
3,15 €
Each
Unité
0.5 20 POM 4mm 8mm 10mm 3mm
N° de stock RS 521-6597
MarqueRS PRO
20,09 €
Each
Unité
2 20 Steel 12mm 32mm 40mm 20mm
N° de stock RS 521-7556
MarqueRS PRO
5,06 €
Each
Unité
1 32 POM 6mm 14mm 32mm 6mm
N° de stock RS 521-6783
MarqueRS PRO
39,24 €
Each
Unité
1 50 Stainless Steel 10mm 35mm 50mm 10mm
N° de stock RS 521-7275
MarqueRS PRO
3,58 €
Each
Unité
0.8 20 POM 5mm 10mm 16mm 4mm
N° de stock RS 521-6553
MarqueRS PRO
4,83 €
Each
Unité
2 15 Steel 12mm 24mm 30mm 20mm
N° de stock RS 521-7310
MarqueRS PRO
3,88 €
Each
Unité
0.8 30 POM 6mm 12mm 24mm 4mm
N° de stock RS 521-6676
MarqueRS PRO
56,62 €
Each
Unité
2 50 Steel 15mm 55mm 100mm 20mm
N° de stock RS 521-7180
MarqueRS PRO
4,53 €
Each
Unité
0.5 64 POM 6mm 14mm 32mm 3mm
N° de stock RS 521-7146
MarqueRS PRO
4,16 €
Each
Unité
0.5 50 POM 5mm 12mm 25mm 3mm
N° de stock RS 521-6626
MarqueRS PRO
28,17 €
Each
Unité
2 32 Steel 12mm 50mm 64mm 20mm
N° de stock RS 521-6660
MarqueRS PRO
33,43 €
Each
Unité
2 44 Steel 15mm 55mm 88mm 20mm
N° de stock RS 878-7916
MarqueRS PRO
14,63 €
Each
Unité
1 30 Steel 6mm 14mm 30mm 5mm
N° de stock RS 521-7528
MarqueRS PRO
5,47 €
Each
Unité
1 25 POM 5mm 11.7mm 25mm 6mm