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This research project was to study the design and construction of energy-saving products for a rear-wheel tractor. The working conditions of the staff requires 3 workers were in the process of assembling the rear wheel tractor. Energy-saving tool that has been designed and built with 2 parts: 1) the use of the wheel balancing equipment, and 2) the use of the wheel hub. By calculating the ratio of energy-saving tool, 2 parts found in Part 1, a security equal to 20.223 and in Part 2, a security equal to 5.654 after the trial saver of staff. product assembly department, and then find the time period used in rear-wheel tractor of the use of energy-saving, down from the original working condition, representing a staggering 40.79 percent. And the number of employees in the process of assembling the rear wheel of the tractor, using energy-saving, down from the original working condition, representing 66.67 percent.
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