Emerson Morse Raider 262Q56R15 Worm Gear Box Speed Reducer 15:1 Ratio 2.61 HP RHNema frame size: 56 Ratio: 15: 1 Input RPM: 1750 Output RPM: 116 Input shaft diameter: 5 8" Output shaft diameter: 1 1 8" Vent Not included Output Torque: 1252(in lbs) Approximate dimensions of main body not including bell shaped motor adaptor (If Included) Length: 7 1 2 " Width: 5 1 2" Height: 8" All gear reducers must have a breather vent. This allows for expansion and contraction of the air within the casing as a result of temperature changes. If a