20:1 Ratio, Cast Iron Parallel Shaft Drive, 1" Input Diameter, 2.000" Output Diameter, S Gear Type, Shaft Input, Hollow Bore Output Product Overview: 20-2007779 Shaft Mounted Parallel Shaft Drive, Double Reduction Shaft input Standard 2-3/16" diameter hollow bore output Power ratings to 21. 9 input HP Eight standard ratios ranging from 5 1 to 72: 1 Part Number 20-2007779 UPC 66279829519 Description 2S 20. 00/1 S 2. 000 Category Gear Drives & Speed Reducers Family Parallel Shaft Drives (Double Reduction) Series 2 Model 2S Specifications Ratio 20: 1 Gear Type S Output Diameter 2. 000 Product Type Parallel Product Line Parallel Shaft Drive Input Type SHAFT Input Diameter 1 Output Type HOLLOW BORE 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 7. 200 N/A 88 5, 093 N/A 95. 00% Conventional 1, 150 5. 100 N/A 58 5, 499 N/A 95. 00% Conventional 850 3. 900 N/A 43 5, 736 N/A 95. 00% Conventional 690 3. 200 N/A 35 5, 802 N/A 95. 00% Conventional 100 0. 490 N/A 5 6, 000 N/A 95. 00% Related Items Part Number UPC Code Type Description 66279867270 Torque Arm Kits 1, 2, 3, 4, 52, 83, 89, 85, 95 KIT, TORQUE ARM