Goodwill Engineering is ISO 9001-2000 Company , establish in 1978 , is manufacturers of spur gears , bevel gears , helical gears etc in india . We are using best cnc and convensional machines and testing equipments for spur gears

A Spur gear is a component within a transmission device that transmits rotational torque by applying a force to the teeth of another gear or device. A gear is different from a pulley in that a gear is a round wheel that has linkages ("teeth" or "cogs") that mesh with other gear teeth, allowing force to be fully transferred without slippage. Depending on their construction and arrangement, geared devices can transmit forces at different speeds, torques, or in a different direction, from the power source.

The most common situation is for a gear to mesh with another gear, but a gear can mesh with any device having compatible teeth, such as linear moving racks.

The gear's most important feature is that gears of unequal sizes (diameters) can be combined to produce a mechanical advantage, so that the rotational speed and torque of the second gear are different from those of the first. In the context of a particular machine, the term "gear" also refers to one particular arrangement of gears among other arrangements (such as "first gear"). Such arrangements are often given as a ratio, using the number of teeth or gear diameter as units. The term "gear" is also used in non-geared devices that perform equivalent tasks:

Spur gears ("straight-cut gears") are the simplest and most common type of gear. Their overall form is a cylinder or disk, and with the teeth projecting radially, and although they are not straight-sided in form (as viewed along the axis), the edge of each tooth (and thus the whole form) is straight and aligned parallel to the axis of rotation. These gears can be meshed together correctly only if they are fitted to parallel axles.