Linear motors are also referred to as direct drive units, since the load is directly coupled to the motor. This eliminates the need for elastic components such as gearboxes and couplings, which introduce backlash and error in the motion. And because they do not rely on mechanical drive components such as ball screws, belts, and rack and pinions, linear motors have a much higher accuracy and repeatability, with no velocity ripple.
This lack of rotating or recirculating parts also makes them virtually maintenance-free and contributes to a lower total cost of ownership when compared to traditional drive mechanisms.
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