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 power
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.
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 mills
Spur 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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Omschrijving Prijs Module Number of Teeth Material Bore Diameter Hub Diameter Pitch Diameter Face Width
RS-stocknr. 182-7824
FabrikantRS PRO
€ 31,72
Each
Aantal stuks
1 60 Steel 12mm 40mm 60mm 15mm
RS-stocknr. 521-7534
FabrikantRS PRO
€ 5,91
Each
Aantal stuks
1 28 POM 5mm 11.7mm 28mm 6mm
RS-stocknr. 182-7954
FabrikantRS PRO
€ 24,94
Each
Aantal stuks
2 35 - 12mm 26mm 70mm 15mm
RS-stocknr. 182-7867
FabrikantRS PRO
€ 14,11
Each
Aantal stuks
0.7 25 Steel 4mm 15mm 17.5mm 5mm
RS-stocknr. 182-7976
FabrikantRS PRO
€ 10,39
Each
Aantal stuks
1 45 - 8mm 18mm 45mm 9mm
RS-stocknr. 521-7613
FabrikantRS PRO
€ 7,13
Each
Aantal stuks
1 48 POM 8mm 16mm 48mm 6mm
RS-stocknr. 521-7584
FabrikantRS PRO
€ 6,64
Each
Aantal stuks
1 40 POM 8mm 16mm 40mm 6mm
RS-stocknr. 182-7804
FabrikantRS PRO
€ 7,21
Each
Aantal stuks
1 15 Steel 6mm 12mm 15mm 15mm
RS-stocknr. 878-7871
FabrikantRS PRO
€ 15,63
Each
Aantal stuks
0.8 30 Steel 6mm 12mm 24mm 6mm
RS-stocknr. 182-7967
FabrikantRS PRO
€ 6,37
Each
Aantal stuks
1 20 - 4mm 9mm 20mm 9mm
RS-stocknr. 182-7951
FabrikantRS PRO
€ 21,86
Each
Aantal stuks
2 28 - 10mm 24mm 56mm 15mm
RS-stocknr. 182-7883
FabrikantRS PRO
€ 10,51
Each
Aantal stuks
0.5 20 Steel 3mm 8mm 10mm 4mm
RS-stocknr. 182-7927
FabrikantRS PRO
€ 9,33
Each
Aantal stuks
1.5 20 - 8mm 17mm 30mm 12mm
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