The motor shaft is a commonly used accessory in many equipment. Its quality directly affects the normal operation of the equipment. Therefore, the manufacturer needs to strictly calculate its technical parameters when designing, and the user also needs to consider it when purchasing and using it. Whether its technical parameters meet the working conditions.

Generally speaking, the motor shaft is a cylindrical part protruding from the motor and the casing. It is not only a support part in the motor, but also an output part for the motor to generate power. Its purpose is to convert the energy of the motor to provide the required power of the motor. It is an indispensable accessory in the motor. The following technical parameters are all the friends need to pay attention to, let's take a look!

1. Strength and stiffness:

In the actual use process, the shaft needs to collide with the device mold frequently. In the production process of the punch and the beer positioning ring, there must be a certain amount of device interference. Therefore, the hardness of the shaft should be higher than that of the positioning ring, and there needs to be a certain difference between the material of the chip and the chip, so that the actual user can reduce the scratches and wounds on the surface of the shaft.

When the shaft is installed, it is necessary to control the surface hardness of the shaft. Generally, the hardness of the surface cannot be higher than HV450. Especially for some shafts with low requirements, the hardness of the surface can be appropriately reduced, and no heat treatment is performed on the surface, because heat treatment can increase the surface hardness of the shaft. But heat treatment will also increase the cost of investment.

2. Surface roughness:

Surface roughness is an important parameter for whether the surface quality of the shaft is good. Generally, the shaft with good quality should have a smooth and delicate surface. Especially for the shaft that needs to slide, the surface roughness is too high, which may destroy the oil film on the contact surface, resulting in Increased wear on the shaft. However, it does not mean that the lower the surface roughness, the better. If the roughness is too low, it will cause molecular conflict between the shaft and the bearing, which is also detrimental to the operation of the shaft.

Therefore, the surface roughness requirements of shafts for different purposes are also different. If the surface roughness of the rotating shaft does not meet the requirements, the contact area of ​​the inner circle of the shaft will be reduced, resulting in loose fit. , and even cause a louder noise during use.

The shaft extension will affect the continuous accuracy of the load device, resulting in vibration and noise of the shaft during operation. The iron core section will cause changes in the air gap between the stator and rotor, and cause the flatness of the chip arrangement to be affected. The performance of the motor is degraded.

3. Straightness (T.I.R.):

The straightness of the overall shaft body does not meet the standard, which will cause the shaft core section to be unbalanced, which will cause the motor to vibrate. Speed ​​decreases, current flow increases. The straightness of the shaft is important to ensure that the motor can run smoothly.

In addition, when designing and selecting the motor shaft, the problem of dimensional accuracy should also be considered. Generally speaking, in order to determine the position of the shaft that plays a supporting role, the requirements for dimensional accuracy are often relatively high. The shaft for transmission has lower dimensional accuracy requirements.

Ningbo Shitai Precision Machinery Co., Ltd. is a motor shaft manufacturer and other products such as spline shaft, welcome to visit our official website.