Arc Teeth Industrial Rubber Timing Belt:Gear code Type Pitch Pb(mm) Tooth heigh Ht(mm)Belt thickness hs(mm)HTD2M 20.751.363M31.172.45M52.063.88M83.36614M146.021020M208.413.2STPD/STSS2M20.761.36S3M31.141.9S4.5M4.51.712.81S5M51.913.4S8M83.055.3S14M145.310.2RPP/HPPD2M20.761.363M31.151.95M51.953.58M83.25.514M14610