按实际使用的产品特性(如机械性能，机械和电子噪音，环境，电磁兼容等要求)来选择合适的电机
Select the appropriate motor according to the actual product characteristics (such asmechanical properties, mechanical and electronic noise, environment, electromagneticcompatibility and other requirements)
1. 电磁兼容Electromagnetic compatibility
电机运行时，电刷与整流子之间会产生火花引起电磁干扰。因辐射而影响周边机器，增加抗干扰元器件加以抑制电磁干扰。
When the motor is running, there is a spark between the brush and the commutator to causeelectromagnetic interference. Due to radiation and affect the surrounding machine, increase the anti-jamming components to suppress electromagnetic interference.
2. 超载及堵转overloadand stall
电机通电运行时，电能转换成机械能时的损耗，产生热量。在额定负载时，产生热量与散发热量平衡，不会烧坏电机，但在超载及堵转时，产生热量会大于散发热量，引起电机温度升高，使线圈绝缘溶解，发生短路，烧毁机.
When the motor is running, the power is converted into mechanical energy lossresulting in heat. In the rated load, heat and heat balance, will not burn the motor, but in theoverload and stall, the heat will be greater than the heat, causing the motor temperature rise,the coil insulation dissolved, short circuit, burn the motor.
3. 电机的轴向压入Axial press of the motor
避免电机轴变形，轴承损坏。影响电机的寿命，电机轴在压入齿轮，风叶，蜗杆等，需要电机轴垂直进入，并且电机轴另一端有支撑，要有合适的力矩压入，
Motor shaft in the press gear, fan, worm, etc., need to enter the motor shaft vertical, and the other end of the motor shaft support. to have the appropriate torque into, to avoid deformation of the motor shaft, bearing damage. Affect the life of the motor,
4. 电机的径向负载Radial load of the motor
过大的径向负载，引起电机的震动，影响电刷和整流子之间的接触，加速轴承磨损，会影响电机的寿命。
Excessive radial load, causing the vibration of the motor, affecting the contact between the brush and commutator, to accelerate bearing wear, will affect the motor life.
5. 电机端子的焊接Welding of motor terminals
在焊接时，必须尽可能快速完成，避免端子过热，造成塑料变形，端子上的橡胶减震条变形脱落。
In the welding. must be completed as quickly as possible, to avoid overheating of the terminal.resulting in plastic deformation, the rubber deformation on the terminal buckle off.
6. 电机的储存与工作环境Motor storage and working environment
避免电机在高温，潮湿，有腐蚀性气体的地方存放，因为这些都有可能导致电机的性能损坏。
Avoid the motor in high temperature, humidity, corrosive gas where the place, because these are likely to lead to damage to the performance of the motor.