The increased accuracy and efficiency of direct drive technology results in a higher quality product out of the machine:
Better ControlTorque and current have direct relation and so torque can be easily determined and c ontrolled
Improved Reliability and Zero MaintenanceGears, belts, and other mechanical transmission parts break. By eliminating these parts and using direct drive motors, the reliability of the machine is improved. Gearheads require periodic lubrication and/or replacement in aggressive start/stop applications. Belts require periodic tightening. There are no time-wear components in a direct drive motor and consequently they require zero maintenance.
Fewer PartsWith direct drive motors / DIRECT TORQUE MOTORS, all you need is the motor and the mounting bolts. This often replaces many parts including brackets, guards, belts, pulleys, tensioners, couplings, and bolts, resulting in:
Fewer parts on the BOM. Less parts to purchase, schedule, inventory and control, and less parts to assemble.Inertia matching limitations of mechanical transmission systems often force machine designers to use a larger motor than would otherwise be required just to satisfy the inertia matching requirement. Such sizing conventions are not required with direct drive technology.
Reduced Audible NoiseMachines with DDR motors have audible noise levels less than the same machine with a mechanical transmission.
Direct Drive / DIRECT TORQUE technology uses HIGH TORQUE LOW SPEED Permanent magnet Synchronous motors with feedback. The features of such a motor as compared to an induction motor are as below :
Permanent Magnet Synchronous motor are capable of producing very high starting torque @ 300% of Rated Value.