One great-torque motor with proper power is made to match with the rotary churn unit in pneumatic drill to form the electric pneumatic drill as one kind of powerful electrically driven tool.
The rotary plate (8) which is connected with a power mechanism (10) forms a unit.
转盘(8)连接有动力机构(10)组成一个单元。
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This article describes the existing defects of power supply unit in rotary kiln 'fan, the reconstruction procedure and the effect after finishing reconstruction.