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. 878-7893
BrandRS PRO
€41.33
Each
units
0.8 80 Steel 10mm 22mm 64mm 6mm
RS Stock No. 182-7903
BrandRS PRO
€8.90
1 Pack of 4
Pack(s)
0.7 20 - 4mm 9mm 14mm 6mm
RS Stock No. 521-7635
BrandRS PRO
€5.03
Each
units
1 56 POM 8mm 18mm 56mm 6mm
RS Stock No. 878-7819
BrandRS PRO
€18.74
Each
units
0.5 12 Steel 3mm 8mm 6mm 5mm
RS Stock No. 182-7820
BrandRS PRO
€20.30
Each
units
1 45 Steel 10mm 30mm 45mm 15mm
RS Stock No. 182-7925
BrandRS PRO
€7.70
Each
units
1.5 16 - 6mm 14mm 24mm 12mm
RS Stock No. 182-7962
BrandRS PRO
€10.40
1 Pack of 2
Pack(s)
1 14 - 4mm 9mm 14mm 9mm
RS Stock No. 182-7900
BrandRS PRO
€9.40
1 Pack of 5
Pack(s)
0.7 15 - 3mm 6mm 10.5mm 6mm
RS Stock No. 182-7949
BrandRS PRO
€17.30
Each
units
2 24 - 10mm 24mm 48mm 15mm
RS Stock No. 521-7354
BrandRS PRO
€3.21
Each
units
0.8 40 POM 6mm 12mm 32mm 4mm
RS Stock No. 521-6553
BrandRS PRO
€10.50
Each
units
2 15 Steel 12mm 24mm 30mm 20mm
RS Stock No. 182-7961
BrandRS PRO
€5.00
Each
units
1 12 - 4mm 9mm 12mm 9mm
RS Stock No. 182-7802
BrandRS PRO
€6.30
Each
units
1 13 Steel 5mm 10mm 13mm 15mm
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RS Pro high quality steel spur gears in ...
Description:
RS Pro high quality steel spur gears in a range of gear ratios Ideally used for speed reduction or increase, torque multiplication, resolution and accuracy in positioning systems. • Steel EN8 (080M40/080M46) or equivalent• Tensile strength: 569N/mm2 (min.)• 20° pressure ...
Injection moulded acetal copolymer spur gears providing a ...
Description:
Injection moulded acetal copolymer spur gears providing a wide range of gear ratios Tensile strength 94N/mm2Hardness (Rockwell R) 110-12020° Pressure angle.
Steel EN8 (080M40/080M46) or equivalent20° pressure angleDIN Standard ...
Description:
Steel EN8 (080M40/080M46) or equivalent20° pressure angleDIN Standard - DIN 867, DIN 3962, DIN 3963, Grade / Quality 9 or equivalent Standard tolerance, unless otherwise stated ±025mm.