... speed control 3. Stable under extremely conditions Piston Air MotorTMH2 Air Motor is operated on the basis of the following principle ... Actual Units Produced(Previous Year) Air Winch, Air Motor, Reducer, Kelly Spinner Air Winch 65 Sets/Month, Air Motor 1,000 Sets/Month, Reducer ... , TMY, TMYQD Series of Air Motor, JQH Series of Air Hoist and Fixture of FSK-15 Air Drilling Rods and Priming Oil Pumps ...