The difference is as follows:
1、 Different tooth types
1. S3M is a circular toothed synchronous belt.
2. 3M is a circular arc tooth synchronous belt.
2、 Different categories
1. 3M is divided into single-sided toothed belt and double-sided toothed belt, which are referred to as single-sided belt and double-sided belt for short.
2. Except that the tooth shape of S3M belt is curved, its structure is basically the same as that of trapezoidal tooth synchronous belt. The pitch of S3M belt is the same, and its tooth height, tooth root thickness and tooth root fillet radius are larger than trapezoidal teeth.
3、 Different performance
1. S3M belt has good wear resistance, low noise and no lubrication. It can be used in harsh environment with dust.
2. 3M performance is relatively worse.
