Newly purchased stepper motor, it may because of handling and transportation by collision damage, manufacturers in the packaging link problems, or because of a lack of spare parts and so on. Use of the motor, also exists because of the bad influence of factors such as external force, the possibility of failure problem. So both newly purchased motor, and through the use of motor, everybody before use, are such checks its structure status: check the appearance of motor crack: before using stepper motor, you should examine its shell structure, the crack was motor appearance, if there is a crack damage, motor shell part are not reliable protection of motor, but also unable to play a protective role, reliable should do maintenance with crack parts in time. Check whether the fastening screws and parts is complete: before using stepper motor, you should pay attention to check every parts of motor to see if the fastening screws are complete and firm, observe whether parts is complete in good condition, if the condition of the missing parts, to find new parts in time. Check the fixed condition of motor are in good condition: in order to ensure smooth running of step motor can, reliable function, and the motor to safeguarding the safety of the applications, request everyone before use, check the fixed condition of the motor, and ensure its fixed in good condition. In order to ensure that the application of step motor can be obtained by optimization performance, you need to use motor like the examination before the structure of the state. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: