Gears are found in tons of mechanical products. They do several important jobs, but most significant, they provide a gear reduction in motorized equipment. That is key because, frequently, a little motor spinning extremely fast can provide more than enough power for a gadget, however, not enough torque. For instance, an electric screwdriver includes a very large gear reduction since it needs lots of torque to carefully turn screws, bu­t the engine only produces a little quantity of torque at a higher speed. With a Vacuum Pump equipment reduction, the result speed can be reduced while the torque is increased.

One more thing gears do is certainly adapt the direction of rotation. For instance, in the differential between the rear wheels of your car, the energy is normally transmitted by a shaft that operates down the guts of the car, and the differential has to turn that power 90 degrees to use it to the tires.

There are a great number of intricacies in the various types of gears. In this post, we’ll learn exactly how the teeth on gears function, and we’ll discuss the different type­s of gears you find in all types of mechanical gadgets.­


On any equipment, the ratio depends upon the distances from the center of the apparatus to the point of contact. For instance, in a device with two gears, if one equipment is twice the diameter of the various other, the ratio will be 2:1.

One of the most primitive types of gears we’re able to look at will be a steering wheel with wooden pegs protruding of it.

The problem with this type of gear is that the distance from the center of every gear to the point of contact changes as the gears rotate. This means that the gear ratio adjustments as the gear turns, and therefore the output velocity also changes. If you used a equipment such as this in your car, it will be impossible to keep up a continuous speed — you’d be accelerating and decelerating constantly.

Many contemporary gears use a special tooth profile called an involute. This profile has the very important home of maintaining a continuous speed ratio between the two gears. Like the peg wheel above, the contact stage moves; but the shape of the involute equipment tooth compensates for this movement. Find this section for details.

Now let’s check out some of the various types of gears.


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