How To Choose The Motor Gear Material Of The Miniature Geared Motor

The miniature geared motor is composed of a micro motor and a reduction gearbox. The reduction gearbox contains motor teeth, transmission gears, gear shafts, housings, bearings, grease and other parts. The material of each part will affect the performance and quality of the micro geared motor.
In the miniature geared motor, the motor is the power source, and the speed of the motor is very high. The selection of the motor tooth material fixed on the motor shaft is very important. The following factors should be considered when selecting materials:

A． The motor tooth material of the miniature geared motor is made of metal, and the machined metal gear and the motor shaft are interference fit. Even if the motor teeth are heated due to high-speed operation, they will not loosen. However, the processing cost of metal teeth is high, and the production capacity is also limited when encountering batches.

B． The motor tooth material of the miniature geared motor is made of plastic, usually POM, because POM has self-lubricating characteristics, it should be noted that in order to prevent the plastic gear from loosening due to thermal expansion due to high-speed operation, the motor shaft should be knurled or made D Type fit and interference fit.

C． The motor teeth of the micro gear motor are made of powder metallurgy, generally copper-based powder metallurgy. This material is used as the motor tooth, which has the advantages of metal machining and can solve the problem of mass production and reduce the cost. However, when it comes to helical gears, powder metallurgy is used as the material, and processing is more difficult.