Aftermarket 30:1 56C Lexar MRV063 Worm Gear Speed Reducer Replacement Part Number: MRV063 Specification:This 30:1 ratio speed reducer is rated for 1.77 HP input at 1750 RPM on a hollow 5/8" diameter x 1-7/8" long keyed shaft and 56C mounting flange.Output is 1416 lb/in on a hollow 1-1/8" diameter x 4-7/16" long keyed shaft.Parameter:Ratio: 30:1 Input Shaft Diameter: 5/8"Output Shaft Diameter: 1-1/8"Mounting: 56C Flange Rated HP: 1.77