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Product Introduction

Product Information


A DC motor is a motor that converts DC electrical energy into mechanical energy, and is widely used in electric drive because of its good speed regulation performance. Because of this, we have to do a good job in the installation and maintenance of the motor.

When the DC motor is in use, if the maintenance is not paid attention to, the bearing will be over-tightened or damaged. In order to avoid this situation, certain measures need to be taken. So what is the reason for the over-tightening of the DC motor bearing?

The operator is afraid of the bearing room of the end cover of the car, and the tolerance of the outer ring of the bearing and the end cover should be suitable when repairing the DC motor. Emphasis is placed on the lower limit of the tolerance range, and it is unwilling to drive to the upper limit, so that the diameter of the bearing chamber is too small, which increases the interference with the outer ring of the bearing; There is not enough understanding that the bearings of DC motors are good for reducing noise. For example, when dismantling the motor bearing, it was found that the outer ring of the bearing and the end cover fit very well, so it was mistakenly thought that the bearing fit was too loose, so it was solved by padding copper, punching holes, or even replacing the end cover, or replacing the bearing, and enlarging the diameter of the outer ring. For this problem, the most common method is to expand the bearing chamber of the end cover, and then insert a sleeve so that the bearing and the bearing chamber of the end cover are closely matched. As a result, the bearing noise increases after the motor is repaired, and the bearing heats up.

Regarding the tightness of the bearing, everyone should pay attention to the operation method when operating and maintaining the equipment. If you don’t understand the situation, you should consult the manufacturer for operation. Do not operate at will, causing damage and failure of the equipment. In order to further understand the defects in the operation of the DC brushless geared motor, an inspection test can be done before disassembly if possible.


1.Do you accept small orders?
2.What is your shipping way
We will help you to choose the best shipping way according to your detail requirements.By sea,by air or by express,etc
3.Can you offer Certificate of Origin
Yes,we can offer it


1.Own factory, competitive price
2.Passed ISO9001 international certification
3.The delivery area is not restricted, and can be shipped worldwide
4.Fast delivery, complete product range


Zhejiang Waxing Electromechanical co.,LTD is a manufacturer of Bearing with well-equipped testing facilities and strong technical force. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in Automobile machinery, precision machine tools, textile machinery, food packaging, paper, chemical industry, metallurgy, railway, wind power, electric power and other industries. Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success! Zhejiang waxing electromechanical co.LTD.,Factory located in Shandong,Headquarters located in Zhejiang,China. Our company specializes in manufacturing various types of bearing.Main category:deep groove ball bearings,cylindrical roller bearings,tapered roller bearings,angular contact bearings,thrust ball bearings,thrust roller bearings,joint bearings,needle bearings,non-standard bearings,outer spherical bearings,motor bearings,agricultural machinery bearings,etc;imported bearing brands as well as Tile axis,Luo axis,Kazakhstan axis and other domestic well-known brands.Whether it is automobiles, ships, agricultural machinery, rolling stock, electrical appliances, paper mills, metallurgy, steel plants, cement plants, textile machinery, engineering machinery, mining machinery, petrochemical and other industries, our products ha

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