... efficiency. 2. Ratio accurately, angular velocity constant. 3. Smooth transmission. Ladder type synchronous belt wheel size tableTrapezoidal straight tooth synchronos belt ... . Nylon and other standard machineable material. Module :0.3-1.5M, Max. Diameter: 150mm. Types:1. Metric T-Series Timing ... Taper Bushed, QD optional :HTD-2M,3M,5M,8M,14M,20M,S2M,S3M,S4.5M,S5M,S8M,S14M,RPP2M,RPP3M,RPP5M,RPP8M ...