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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รายละเอียดสินค้า / Description ราคา / Price Module Number of Teeth Material Bore Diameter Hub Diameter Pitch Diameter Face Width
RS Stock No. 521-7269
Brand :RS PRO
THB87.94
Each
Units
0.8 18 POM 4mm 8mm 14.4mm 4mm
RS Stock No. 521-7130
Brand :RS PRO
THB82.82
Each
Units
0.5 48 POM 5mm 12mm 24mm 3mm
RS Stock No. 521-7017
Brand :RS PRO
THB87.94
Each
Units
0.5 18 POM 3mm 6mm 9mm 3mm
RS Stock No. 521-6193
Brand :RS PRO
THB219.47
Each
Units
1 12 Steel 6mm 14mm 12mm 10mm
RS Stock No. 878-7840
Brand :RS PRO
THB1,006.97
Each
Units
0.5 45 Steel 4mm 10mm 22.5mm 4mm
RS Stock No. 521-6474
Brand :RS PRO
THB687.20
Each
Units
1.5 32 Steel 10mm 40mm 48mm 15mm
RS Stock No. 521-6806
Brand :RS PRO
THB3,253.91
Each
Units
1 100 Stainless Steel 12mm 60mm 100mm 10mm
RS Stock No. 521-7001
Brand :RS PRO
THB54.39
Each
Units
0.5 16 POM 3mm 6mm 8mm 3mm
RS Stock No. 521-7562
Brand :RS PRO
THB234.06
Each
Units
1 35 POM 6mm 14mm 35mm 6mm
RS Stock No. 182-7911
Brand :RS PRO
THB102.545
Each: (In a Pack of 2)
Units
0.7 36 - 6mm 15mm 25.2mm 6mm
RS Stock No. 182-7912
Brand :RS PRO
THB134.855
Each: (In a Pack of 2)
Units
0.7 40 - 6mm 15mm 28mm 6mm
RS Stock No. 182-7895
Brand :RS PRO
THB846.01
Each
Units
0.5 50 Steel 5mm 15mm 25mm 4mm
RS Stock No. 182-7849
Brand :RS PRO
THB1,903.00
Each
Units
1.5 55 Steel 15mm 60mm 82.5mm 17mm
RS Stock No. 182-7914
Brand :RS PRO
THB138.025
Each: (In a Pack of 2)
Units
0.7 45 - 6mm 18mm 31.5mm 6mm
RS Stock No. 182-7955
Brand :RS PRO
THB875.50
Each
Units
2 36 - 12mm 26mm 72mm 15mm
RS Stock No. 182-7867
Brand :RS PRO
THB544.50
Each
Units
0.7 25 Steel 4mm 15mm 17.5mm 5mm
RS Stock No. 521-6288
Brand :RS PRO
THB400.12
Each
Units
1 26 Steel 8mm 22mm 26mm 10mm
RS Stock No. 182-7964
Brand :RS PRO
THB196.165
Each: (In a Pack of 2)
Units
1 15 - 4mm 9mm 15mm 9mm
RS Stock No. 182-7956
Brand :RS PRO
THB919.26
Each
Units
2 40 - 12mm 26mm 80mm 15mm
RS Stock No. 878-7825
Brand :RS PRO
THB833.72
Each
Units
0.5 25 Steel 4mm 9mm 12.5mm 4mm