Is a stepper or servo best for torque optimization?

April 22, 2015
A machine builder wants to know the tradeoffs between stepper motors and servo motors for its CNC machines

We've been using stepper motors in the CNC machines we build. However, we sometimes lose steps because of the heavy table. We’ve considered putting a feedback device on the stepper application to optimize torque, but is there a better solution? Would a servo motor solve this? What are the tradeoffs?

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