S3M型标准皮带宽6mm规格齿数形状节径外径WL1KX轮毂直径内孔透孔外径档边外径档边内径档边型号S3M10C/A9.558.7911197--3-136F-101306S3M11C/A10.509.7411197--3-147F-101407S3M12C/A11.4610.7011197--3-147F-101407S3M14C/A13.3712.6111197--4-139.5F-101695S3M15C/A14.3213.5611197--4-1811F-101811S3M16C/A15.2814.5211197-104-1811F-101811S3M18C/A17.1916.4311197-105 2312F-102312S3M19C/A18.1417.3811197-105-2513F-102513S3M20C/A19.1018.3411197-105-2514F-102514S3M21A/B20.0519.2911