Sumitomo CHVJ IR SM-Cyclo Inline Gear Reducer 102:1 Ratio 17 RPM 21300In-Lb

Frame Size: 8-1/2" Bolt circle
Ratio: 102
Input RPM: 1750
Output RPM: 17.1
Input Shaft Diameter: 3/4"
Output Shaft Diameter: 3-5/8"
Output Shaft Orientation (Left, Right, Inline): Inline
Input H.P: 6.8
Output Torque: 21300
Does gearbox include breather vent? Yes No: Yes
New old stock surplus item from spare parts storage.  Has some shelf wear.
There is no oil inside this unit.
Not sure on the input frame size. 3/4" input shaft. 8-1/2" bolt circle.