3.12:1 Ratio, Cast Iron Parallel Shaft Drive, 1" Input Diameter, 1.375" Output Diameter, S Gear Type, Shaft Input, Hollow Bore Output Product Overview: 20-2006994 Shaft Mounted Parallel Shaft Drive, Single Reduction Shaft input Standard 1-15/16" diameter hollow bore output Power ratings to 38. 5 input HP Available ratios 2. 04: 1, 3. 12: 1, 4: 1, 5: 1, and 6. 09: 1 Part Number 20-2006994 UPC 66279829170 Description 85LS 3. 12/1 S 1. 375 Category Gear Drives & Speed Reducers Family Parallel Shaft Drives (Single Reduction) Series 85L Model 85LS Specifications Ratio 3. 12: 1 Gear Type S Output Diameter 1. 375 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 29. 600 N/A 561 3, 291 N/A 97. 50% Conventional 1, 150 21. 700 N/A 369 3, 669 N/A 97. 50% Conventional 850 17. 100 N/A 272 3, 905 N/A 97. 50% Conventional 690 14. 400 N/A 221 4, 056 N/A 97. 50% Conventional 100 2. 870 N/A 32 5, 592 N/A 97. 50% Related Items Part Number UPC Code Type Description 66279867270 Torque Arm Kits 1, 2, 3, 4, 52, 83, 89, 85, 95 KIT, TORQUE ARM