When generally there is a sizable temperature fluctuation in the application environment, when the diameter is large or when there is load on its keyway, metallic hub manufactured from S45C or stainless may sometimes be used. In these cases, the teeth portion and the hub part are attached together with screws. If it is not possible to screw with each other, two parts are fused together and made into fused gears. Ever-Power’s fused gears were created so that the holding strength of the fused surface is stronger compared to the tooth strength.
The positive characteristics of plastic gears include being 
lightweight, non-rusting, silent, injection molding enabling low priced and large production, and in a position to operate without lubrication by mating with metal gears. On the other hand, low strength, inclination to hold heat, large dimensional change including backlash compared to metallic, etc. are some of the factors requiring caution. The degree of dimensional changes that happen with plastic gears rely on the capability to resist temperature change, moisture absorption rate and resistance to chemicals.
So far as the applications of plastic-type gears, they are used in varying industries such as food production machines, gadgets, chemical substance, toy, and medical gear industries.
Our engineering department can help in customizing gears to your drawings and specifications.
Buy Inch and Metric Plastic Gears from Our Online eStore
We offer: Precision Plastic material Spur Gears, Plastic Gear Rack, Plastic-type Miter & Bevel Gears, Plastic material Worm Gears & Worms, Plastic material Bevel Gears, Plastic Equipment Blanks, Plastic-type Pinions, and Plastic-type Flexible Gear Rack – Flexirack. Many of our plastic gears are offered with the Fairloc® Hub.
Call for assistance in finding the right gear, adjustments for a standard Plastic Gear Rack catalog item or customized design, our engineers will offer you the best solution for the application.
Plastic Machining Company gears and gear racks are manufactured from high-performance materials including nylon plastic material and acetal plastic. These durable polymers provide wear and noise reduction advantages over comparable metallic products. PMC’s metallic replacements are similar in style and meet most industry specifications.