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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Igus Iguform S270 64 Teeth Spur Gear, 1 Module, 10mm Bore Diam, 64mm Pitch Diam, 21mm Hub Diam RS Stock No.: 272-3648 Mfr. Part No.: S270GM-ST-100-064-00-100-R Datasheets: HK$257.74 Each	Igus	1	64	Iguform S270	10mm	21mm	64mm	-
Igus Iguform S270 42 Teeth Spur Gear, 1.5 Module, 10mm Bore Diam, 63mm Pitch Diam, 24mm Hub Diam RS Stock No.: 272-4131 Mfr. Part No.: S270GM-ST-150-042-00-100-R Datasheets: HK$293.89 Each	Igus	1.5	42	Iguform S270	10mm	24mm	63mm	-
Igus Igutek P360 54 Teeth Spur Gear, 1.25 Module, 10mm Bore Diam, 67.5mm Pitch Diam, 21mm Hub Diam RS Stock No.: 272-5621 Mfr. Part No.: P360GM-ST-125-054-00-100-R Datasheets: HK$308.42 Each	Igus	1.25	54	Igutek P360	10mm	21mm	67.5mm	-
Igus Iguform S270 36 Teeth Spur Gear, 1.5 Module, 10mm Bore Diam, 54mm Pitch Diam, 24mm Hub Diam RS Stock No.: 272-4128 Mfr. Part No.: S270GM-ST-150-036-00-100-R Datasheets: HK$260.60 Each	Igus	1.5	36	Iguform S270	10mm	24mm	54mm	-
Igus Iguform S270 13 Teeth Spur Gear, 1.25 Module, 5mm Bore Diam, 16.25mm Pitch Diam, 9mm Hub Diam RS Stock No.: 272-3662 Mfr. Part No.: S270GM-ST-125-013-00-050-R Datasheets: HK$114.74 Each	Igus	1.25	13	Iguform S270	5mm	9mm	16.25mm	-
Igus Iguform S270 54 Teeth Spur Gear, 1.5 Module, 12mm Bore Diam, 81mm Pitch Diam, 27mm Hub Diam RS Stock No.: 272-4136 Mfr. Part No.: S270GM-ST-150-054-00-120-R Datasheets: HK$324.32 Each	Igus	1.5	54	Iguform S270	12mm	27mm	81mm	-
Igus Iguform S270 75 Teeth Spur Gear, 1 Module, 10mm Bore Diam, 75mm Pitch Diam, 21mm Hub Diam RS Stock No.: 272-3652 Mfr. Part No.: S270GM-ST-100-075-00-100-R Datasheets: HK$275.13 Each	Igus	1	75	Iguform S270	10mm	21mm	75mm	-
Igus Iguform S270 28 Teeth Spur Gear, 1.25 Module, 8mm Bore Diam, 35mm Pitch Diam, 18mm Hub Diam RS Stock No.: 272-3677 Mfr. Part No.: S270GM-ST-125-028-00-080-R Datasheets: HK$184.18 Each	Igus	1.25	28	Iguform S270	8mm	18mm	35mm	-
Igus Iguform S270 28 Teeth Spur Gear, 0.7 Module, 6mm Bore Diam, 19.6mm Pitch Diam, 9mm Hub Diam RS Stock No.: 272-3589 Mfr. Part No.: S270GM-ST-070-028-00-060-R Datasheets: HK$62.69 Each	Igus	0.7	28	Iguform S270	6mm	9mm	19.6mm	-
Igus Iguform S270 26 Teeth Spur Gear, 1.25 Module, 6mm Bore Diam, 32.5mm Pitch Diam, 18mm Hub Diam RS Stock No.: 272-3675 Mfr. Part No.: S270GM-ST-125-026-00-060-R Datasheets: HK$172.40 Each	Igus	1.25	26	Iguform S270	6mm	18mm	32.5mm	-
Igus Iguform S270 21 Teeth Spur Gear, 2.5 Module, 12mm Bore Diam, 52.5mm Pitch Diam, 24mm Hub Diam RS Stock No.: 272-4195 Mfr. Part No.: S270GM-ST-250-021-00-120-R Datasheets: HK$386.44 Each	Igus	2.5	21	Iguform S270	12mm	24mm	52.5mm	-
Igus Igutek P360 28 Teeth Spur Gear, 3 Module, 14mm Bore Diam, 84mm Pitch Diam, 28mm Hub Diam RS Stock No.: 272-5764 Mfr. Part No.: P360GM-ST-300-028-00-140-R Datasheets: HK$581.50 Each	Igus	3	28	Igutek P360	14mm	28mm	84mm	-
Igus Igutek P360 90 Teeth Spur Gear, 2.5 Module, 20mm Bore Diam, 225mm Pitch Diam, 40mm Hub Diam RS Stock No.: 272-5746 Mfr. Part No.: P360GM-ST-250-090-00-200-R Datasheets: HK$2,834.83 Each	Igus	2.5	90	Igutek P360	20mm	40mm	225mm	-
Igus Igutek P360 70 Teeth Spur Gear, 2.5 Module, 20mm Bore Diam, 175mm Pitch Diam, 40mm Hub Diam RS Stock No.: 272-5742 Mfr. Part No.: P360GM-ST-250-070-00-200-R Datasheets: HK$2,417.16 Each	Igus	2.5	70	Igutek P360	20mm	40mm	175mm	-
Igus Iguform S270 110 Teeth Spur Gear, 1.5 Module, 20mm Bore Diam, 165mm Pitch Diam, 40mm Hub Diam RS Stock No.: 272-4143 Mfr. Part No.: S270GM-ST-150-110-00-200-R Datasheets: HK$1,828.91 Each	Igus	1.5	110	Iguform S270	20mm	40mm	165mm	-
Igus Iguform S270 100 Teeth Spur Gear, 1.5 Module, 20mm Bore Diam, 150mm Pitch Diam, 40mm Hub Diam RS Stock No.: 272-4142 Mfr. Part No.: S270GM-ST-150-100-00-200-R Datasheets: HK$1,759.47 Each	Igus	1.5	100	Iguform S270	20mm	40mm	150mm	-
Igus Igutek P360 12 Teeth Spur Gear, 3 Module, 12mm Bore Diam, 36mm Pitch Diam, 24mm Hub Diam RS Stock No.: 272-5748 Mfr. Part No.: P360GM-ST-300-012-00-120-R Datasheets: HK$371.91 Each	Igus	3	12	Igutek P360	12mm	24mm	36mm	-
Igus Iguform S270 28 Teeth Spur Gear, 3 Module, 14mm Bore Diam, 84mm Pitch Diam, 28mm Hub Diam RS Stock No.: 272-4238 Mfr. Part No.: S270GM-ST-300-028-00-140-R Datasheets: HK$484.60 Each	Igus	3	28	Iguform S270	14mm	28mm	84mm	-
Igus Iguform S270 90 Teeth Spur Gear, 1.5 Module, 14mm Bore Diam, 135mm Pitch Diam, 30mm Hub Diam RS Stock No.: 272-4141 Mfr. Part No.: S270GM-ST-150-090-00-140-R Datasheets: HK$381.98 Each	Igus	1.5	90	Iguform S270	14mm	30mm	135mm	-
Igus Iguform S270 14 Teeth Spur Gear, 2 Module, 8mm Bore Diam, 28mm Pitch Diam, 18.5mm Hub Diam RS Stock No.: 272-4150 Mfr. Part No.: S270GM-ST-200-014-00-080-R Datasheets: HK$221.71 Each	Igus	2	14	Iguform S270	8mm	18.5mm	28mm	-

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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