Unit motors, to reach the minimum recommended speed of 600 rpm:Air motors 20,000 rpm: use a contra angle 32:1 reducer Electric motors 40,000 rpm: use a contra angle 64:1, 70:1 reducerEndodontic motors, corded or cordless like the Rooter:Set the speed to 600-1000 rpm and the torque to 0.5 to 1.5 Ncm
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