Spur Gears

The most common type of gears are spur gears, also known as straight-cut gears, and can be found in a multitude of applications. They have been specifically designed to transmit large amounts of power by placing them on parallel shafts which rotate in opposite directions.Spur gears have an involute profile with straight teeth 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.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.So what are the advantages? High transmission efficiency Compact and very easy to install Constant velocity ratio No slippage – unlike belt drives Highly reliable Can transmit large amounts of powerTypes of spur gearsPlastic 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.Common applications Metal cutting machines Power plants Marine engines Mechanical clocks and watches Fuel pumps Washing machines Gear motors and gear pumps Rack and pinion mechanisms Material handling equipment Automobile gear boxes Steel mills Rolling millsSpur gears are however very loud and so will not be found in vehicles. When the teeth collide with each other there is an impact noise which is really loud compared to the helical gears found in cars.

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Description Price Module Number of Teeth Material Bore Diameter Hub Diameter Pitch Diameter Face Width
RS Stock No. 182-7950
BrandRS PRO
HK$173.81
Each
units
2 25 - 10mm 24mm 50mm 15mm
RS Stock No. 182-7880
BrandRS PRO
HK$82.08
Each
units
0.5 12 Steel 2mm 4mm 6mm 4mm
RS Stock No. 521-7411
BrandRS PRO
HK$57.09
Each
units
0.8 64 POM 6mm 15.5mm 51.2mm 4mm
RS Stock No. 878-7897
BrandRS PRO
HK$75.29
Each
units
1 10 Steel 6mm 12.5mm 10mm 5mm
RS Stock No. 182-7901
BrandRS PRO
HK$19.312
Each (In a Pack of 5)
units
0.7 16 - 4mm 9mm 11.2mm 6mm
RS Stock No. 182-7835
BrandRS PRO
HK$115.87
Each
units
1.5 20 Steel 8mm 25mm 30mm 17mm
RS Stock No. 521-6480
BrandRS PRO
HK$225.94
Each
units
1.5 36 Steel 10mm 45mm 54mm 15mm
RS Stock No. 182-7958
BrandRS PRO
HK$240.43
Each
units
2 50 - 14mm 30mm 100mm 15mm
RS Stock No. 182-7832
BrandRS PRO
HK$94.15
Each
units
1.5 16 Steel 8mm 20mm 24mm 17mm
RS Stock No. 521-7607
BrandRS PRO
HK$80.54
Each
units
1 45 POM 8mm 16mm 45mm 6mm
RS Stock No. 521-6474
BrandRS PRO
HK$202.03
Each
units
1.5 32 Steel 10mm 40mm 48mm 15mm
RS Stock No. 521-6610
BrandRS PRO
HK$204.20
Each
units
2 30 Steel 12mm 50mm 60mm 20mm
RS Stock No. 521-6604
BrandRS PRO
HK$165.31
Each
units
2 24 Steel 12mm 38mm 48mm 20mm
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