Aftermarket 60:1 56C Lexar Industrial MRV040 Worm Gear Speed Reducer Replacement Part Number: MRV040 Specification:This 60:1 ratio speed reducer is rated for 0.25 HP input at 1750 RPM on a hollow 5/8" diameter x 1-7/8" long keyed shaft and 56C mounting flange.Output is 319 lb/in on a hollow 3/4" diameter x 3" long keyed shaft.Parameter:Ratio: 60:1 Input Shaft Diameter: 5/8"Output Shaft Diameter: 3/4"Mounting: 56C Flange Rated HP: 0.25