Spur & Helical Gears

Spur gears are the most common and straightforward type of gear, classified as cylindrical gears within the parallel shaft gear group.

They feature teeth that project radially from their cylindrical surface, with straight edges aligned parallel to the axis of rotation. In a pair of meshed spur gears, the larger gear is called the gear, while the smaller one is known as the pinion. When these gears rotate, they transmit power and motion through their meshed teeth, without generating axial forces.

Spur gears can be used to either increase or decrease power (torque) and, when used in multiples, can achieve significant gear reductions. They are commonly found in applications where axial loads are not critical and noise is less of a concern, such as in electric screwdrivers, clothes dryers, fuel pumps, oscillating sprinklers, wind-up alarm clocks, washing machines, blenders, mills, and construction equipment.

Spur gears are available in sizes ranging from 0.5 to 8.0 MOD and can be made from various materials to suit different applications. Options include steel EN8 (080M40/080M46) or equivalent, stainless steel AISI 303/304, and moulded materials such as nylon 6 (PA6) with 30% glass filling, HOSTAFORM®, and DELRIN® 500. Additionally, gears can be produced in blue acetal food-grade material.

Intermediate sizes and custom gears can be manufactured according to specific drawings.