This standard stipulates the type, mark, size and belt length measurement of 7 types of trapezoidal synchronous belts (hereinafter referred to as belts) of MXL, XXL, XL, L, H, XH and XXH. This standard applies to general industrial synchronous belt drives.
GB/T 11616-2013 history
2013GB/T 11616-2013 Synchronous belt drives.Belts with pitch codes.MXL, XXL, XL, L, H, XH and XXH.Synchronous belt dimensions