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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RS PRO POM 30 Teeth Spur Gear, 0.5 Module, 5mm Bore Diam, 15mm Pitch Diam, 10mm Hub Diam RS Stock No.: 521-7067 Datasheets: HK$40.30 Each	0.5	30	POM	5mm	10mm	15mm	3mm
RS PRO 20 Teeth Spur Gear, 0.7 Module, 4mm Bore Diam, 14mm Pitch Diam, 9mm Hub Diam RS Stock No.: 182-7903 Datasheets: HK$16.70 Each (In a Pack of 4)	0.7	20	-	4mm	9mm	14mm	6mm
RS PRO Stainless Steel 56 Teeth Spur Gear, 1 Module, 10mm Bore Diam, 56mm Pitch Diam, 40mm Hub Diam RS Stock No.: 521-6799 Datasheets: HK$296.90 Each	1	56	Stainless Steel	10mm	40mm	56mm	10mm
RS PRO Steel 16 Teeth Spur Gear, 0.7 Module, 4mm Bore Diam, 11.2mm Pitch Diam, 9mm Hub Diam RS Stock No.: 182-7864 Datasheets: HK$104.50 Each	0.7	16	Steel	4mm	9mm	11.2mm	5mm
RS PRO 32 Teeth Spur Gear, 0.7 Module, 6mm Bore Diam, 22.4mm Pitch Diam, 12mm Hub Diam RS Stock No.: 182-7909 Datasheets: HK$45.075 Each (In a Pack of 2)	0.7	32	-	6mm	12mm	22.4mm	6mm
RS PRO Steel 24 Teeth Spur Gear, 0.8 Module, 6mm Bore Diam, 19.2mm Pitch Diam, 12mm Hub Diam RS Stock No.: 878-7869 Datasheets: HK$154.10 Each	0.8	24	Steel	6mm	12mm	19.2mm	6mm
RS PRO Steel 28 Teeth Spur Gear, 1 Module, 8mm Bore Diam, 28mm Pitch Diam, 20mm Hub Diam RS Stock No.: 182-7814 Datasheets: HK$132.80 Each	1	28	Steel	8mm	20mm	28mm	15mm
RS PRO Hostaform 50 Teeth Spur Gear, 2 Module, 14mm Bore Diam, 100mm Pitch Diam, 30mm Hub Diam RS Stock No.: 182-7958 Datasheets: HK$282.00 Each	2	50	Hostaform	14mm	30mm	100mm	15mm
RS PRO Steel 60 Teeth Spur Gear, 1 Module, 12mm Bore Diam, 60mm Pitch Diam, 40mm Hub Diam RS Stock No.: 182-7824 Datasheets: HK$325.40 Each	1	60	Steel	12mm	40mm	60mm	15mm
RS PRO Steel 12 Teeth Spur Gear, 0.8 Module, 4mm Bore Diam, 9.6mm Pitch Diam, 11.2mm Hub Diam RS Stock No.: 878-7856 Datasheets: HK$123.21 Each	0.8	12	Steel	4mm	11.2mm	9.6mm	6mm
RS PRO Steel 20 Teeth Spur Gear, 0.7 Module, 4mm Bore Diam, 14mm Pitch Diam, 10mm Hub Diam RS Stock No.: 182-7865 Datasheets: HK$90.16 Each	0.7	20	Steel	4mm	10mm	14mm	5mm
RS PRO POM 50 Teeth Spur Gear, 0.8 Module, 6mm Bore Diam, 40mm Pitch Diam, 14.5mm Hub Diam RS Stock No.: 521-7382 Datasheets: HK$38.90 Each	0.8	50	POM	6mm	14.5mm	40mm	4mm
RS PRO POM 48 Teeth Spur Gear, 1 Module, 8mm Bore Diam, 48mm Pitch Diam, 16mm Hub Diam RS Stock No.: 521-7613 Datasheets: HK$72.40 Each	1	48	POM	8mm	16mm	48mm	6mm
RS PRO 15 Teeth Spur Gear, 1 Module, 4mm Bore Diam, 15mm Pitch Diam, 9mm Hub Diam RS Stock No.: 182-7964 Datasheets: HK$57.85 Each (In a Pack of 2)	1	15	-	4mm	9mm	15mm	9mm
RS PRO Steel 50 Teeth Spur Gear, 1.5 Module, 14mm Bore Diam, 75mm Pitch Diam, 50mm Hub Diam RS Stock No.: 182-7848 Datasheets: HK$435.30 Each	1.5	50	Steel	14mm	50mm	75mm	17mm
RS PRO Steel 35 Teeth Spur Gear, 1 Module, 6mm Bore Diam, 35mm Pitch Diam, 14mm Hub Diam RS Stock No.: 878-7910 Datasheets: HK$165.70 Each	1	35	Steel	6mm	14mm	35mm	5mm
RS PRO Hostaform 16 Teeth Spur Gear, 1.5 Module, 6mm Bore Diam, 24mm Pitch Diam, 14mm Hub Diam RS Stock No.: 182-7925 Datasheets: HK$83.50 Each	1.5	16	Hostaform	6mm	14mm	24mm	12mm
RS PRO Steel 40 Teeth Spur Gear, 0.5 Module, 4mm Bore Diam, 20mm Pitch Diam, 12mm Hub Diam RS Stock No.: 182-7892 Datasheets: HK$186.50 Each	0.5	40	Steel	4mm	12mm	20mm	4mm
RS PRO Steel 12 Teeth Spur Gear, 0.5 Module, 2mm Bore Diam, 6mm Pitch Diam, 4mm Hub Diam RS Stock No.: 182-7880 Datasheets: HK$96.10 Each	0.5	12	Steel	2mm	4mm	6mm	4mm
RS PRO POM 20 Teeth Spur Gear, 0.5 Module, 4mm Bore Diam, 10mm Pitch Diam, 8mm Hub Diam RS Stock No.: 521-7023 Datasheets: HK$58.18 Each	0.5	20	POM	4mm	8mm	10mm	3mm

Spur Gears

Types of spur gears

What are the advantages of a spur gear?

Where are spur gears used?

946 Products showing for Spur Gears

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