250:1 Ratio, Cast Iron Double-Reduction Worm Reducer, 0.625" Input Diameter, 1.188" Output Diameter, C-Face Quill Input, Hollow Bore Output Rating Table (@ 1.00 Service Factor) (AGMA Load Class I) Oil Input Output Efficiency% RPM HP Thermal HP RPM Torque Thermal Torque Conventional 1, 750 0.500 0.500 7 2, 488 2, 488 54.90% PAO Synthetic 1, 750 0.500 0.500 7 2, 796 2, 796 61.70% PAG Synthetic 1, 750 0.500 0.500 7 2, 972 2, 972 65.60% Related Items Part Number UPC Code Type Description