Central Drive system has a central electrical motor. Through the overhead shop the power supplied to different machine tools. Advantages: 1. Motor is more or less evenly loaded and its maximum capacity utilization 2. Cost is economic. One motor of more power costs less than many motors of less capacity. Disadvantages: 1. If the motor is out of commission, all the machine tools remain idle. 2. The system does not allow very long distance transmission. It creates space problem, because of line shaft and the belt drives. Modern machine tools are driven by individual motors. In developing countries older workshop have still central drive, because of lower investment cost. All D.C. motor all time used by special conditions. Available direct current can not be used. The Selection of a Motor as a Machine Tool Drive Electrical Drive System Fixtures and Economics
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