25:1 Ratio, Cast Iron Single-Reduction Worm Reducer, 1.125" Input Diameter, 1.500" 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 2, 500 2.650 2.250 100 1, 345 1, 142 80.50% PAO Synthetic 2, 500 2.650 2.650 100 1, 426 1, 426 85.30% PAG Synthetic 2, 500 2.650 2.650 100 1, 470 1, 470 88.00% Conventional 1, 750 2.310 2.120 70 1, 640 1, 505 78.70% PAG Synthetic 1, 750 2.310 2.310 70 1, 793 1, 793 86.10% PAO Synthetic 1, 750 2.310 2.310 70 1, 739 1, 739 83.50% PAG Synthetic 1, 170 1.850 1.850 46.8 2, 090 2, 090 83.80% PAO Synthetic 1, 170 1.850 1.850 46.8 2, 027 2, 027 81.30% Conventional 1, 170 1.850 1.850 46.8 1, 912 1, 912 76.60% PAO Synthetic 100 0.246 0.246 4 2, 691 2, 691 69.40% Conventional 100 0.246 0.246 4 2, 538 2, 538 65.50% PAG Synthetic 100 0.246 0.246 4 2, 774 2, 774 71.60%