HP Ratings1750 RPM1150 RPMDriven RPMPulley CombinationPitch DiameterDriven RPMDriven RPMTorqueDriverDrivenBeltDriverDriven1:011750at1150at@1-11750 RPM1150 RPMRatioSizeMin.Max.Min.Max.Ratioto Max.Min.to Max.Min.RatioMin.Max.Min.Max.10.310.0750.2365505500356356010:01MCW60060TBR1422V1.75.921.75.923.91.50.3410.2254400300026419807.5:1MCW60075TBR1422V1.75.923.447.34.7120.481.330.3272423407527826789.6:1MCW7080TBR1922V1.886.92.967.785.0230.6520.42108375286324618827.7:1MCW7090-19TBR1922V1.886.94.228.785.630.620.35108305177620111675.8:1MCW70110TBR1922V1.886.96.810.786.830.7720.52108450347029722907.7:1MCW7790-19TBR1922V2.257.533.88.785.745130.63180365210824113915.8:1MCW77110TBR1922V2.257.536.2510.786.930.7720.521084504500297297010:01mcw9090-23tbr2322V2.258.752.888.755.7251.0830.65180380342025122579:01MCW90106TBR2322V2.258.754.4410.386.6750.9630.58180336249022216427.4:1MCW90120TBR2322V2.258.756.1511.757.487.51.751.13270395239726015556:01MCW90-75120TBR2322V2.658.756.4711.757.64