Last time we talked about the durability problem of buying stepper motors what should we do about it?The solutions are as follows:
There are several ways to overcome this obstacle and make linear motors more durable and maintainable. Due to the brushless design of stepper motors, the only components that cause wear are the rotor bearings and threaded joints consisting of guide screws/nuts.Improvements in ball bearings in recent years have provided long-life products adapted to linear motion.Recent improvements have also been made in the life and durability of the guide screw and nut assemblies.
To improve the durability, it is necessary to understand the basic structure of the motor.A good research example is the Size 17 motor, which belongs to the small Size of hybrid full stepping motor family.Traditionally, linear motors use a hollow shaft machined from a bearing-grade metallic material (such as bronze), which has an internal thread and is then connected to a threaded guide rod.Hollow shaft is mounted along the axis of rotor.Guide rod material is usually stainless steel, which has considerable corrosion resistance.The type of thread used for most parts is the machined thread (e.g. #10-32), which has either a single head or multiple heads, depending on the precision and speed required by the motor.
