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China Electronics Oem
Feb 17, 2017

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A direct drive mechanism is one that takes the power coming from a motor without any reductions (such as a gearbox).

Increased efficiency: The power is not wasted in friction (from the belt, chain, etc., and especially, gearboxes.)

Reduced noise: Being a simpler device, a direct-drive mechanism has fewer parts which could vibrate, and the overall noise emission of the system is usually lower.

Longer lifetime: Having fewer moving parts also means having fewer parts prone to failure. Failures in other systems are usually produced by aging of the component (such as a stretched belt), or stress.

High torque at low rpm.

Faster and precise positioning. High torque and low inertia allows faster positioning times on permanent magnet synchronous servo drives. Feedback sensor directly on rotary part allows precise angular position sensing.

Drive stiffness. Mechanical backlash, hysteresis and elasticity is removed avoiding use of gearbox or ball screw mechanisms.