The 20:1 Ratio, 0. 875" Input Diameter, 1.625" Output Diameter, Right Angle Aluminum Single-Reduction Worm Reducer Regal Beloit Grove Gear&Reg; EL8320051.00 UPC: 662959042465 | UNSPSC: 26111537 | GTIN: Gear Reducers & Gearmotors > Gear Drives > Right Angle Gear Drives > Non-Helical Worm Right Angle Drives Grove Gear® ELECTRA GEAR® Worm Gear Reducer, Right Angle Single Reduction, Series: EL Series, 20:1 Gear Ratio, 5.18 hp Input, 4.536 hp Output, C-Face Coupled Input, Shaft Output, 7/8 in Dia Input, 1.625 in Dia x 3.6 in L Output, 87 rpm Output Maximum Speed, 1750 rpm Input Maximum Speed, 3267 in-lb Output, 3-1/4 in Centre Distance, 3/16 x 3/32 in Input, 3/8 x 2-1/4 in Output Keyway, PAG Synthetic Oil Lubrication, Base Mount, Aluminum