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What is a Cam Bearing? Cam bearing characteristics and maintenance

 

Cam bearing is also a kind of bearing, with a thick outer ring needle roller bearing and bolt combination structure; The bolt of the bearing is provided with lubricating oil channel; The outer surface of the outer ring is cylindrical and spherical, which can be selected according to the actual application; The eccentric type is used for automotive camshafts (shafts that control the opening and closing of valves in piston engines) because it is convenient to accurately adjust the axis position of bolts when mounting bearings.

 

Features of cam bearings:

 

1. Thick outer ring needle roller bearing and bolt combination structure;

 

2. There are metric series and imperial series in size;

 

3. A lubricating oil channel is arranged in the bolt of the bearing;

 

4. In order to facilitate installation, the large end of the bearing is designed with "one word" and "hexagonal hole type" wrench assembly mode;

 

5. The outer surface of the outer ring is cylindrical and spherical, which can be selected according to the actual application;

 

6. Full roller type is suitable for occasions that bear large loads and low speeds;

 

7. The eccentric type can easily and accurately adjust the axis position of the bolt when installing the bearing.

 

Maintenance of cam bearings:

 

1. The newly put into use lobe rotor pump generally needs to be replaced with grease (oil) after 100 hours of operation, and then replaced once every 500 hours of operation.

 

2. After 1500 hours of operation, the grease should be replaced, and the amount of oil should not be too much or too little, because too much or too little grease will cause the bearing to heat up, and the amount of oil should generally be controlled at

2/1----2/3 of the volume of the bearing chamber.

 

3. For bearings lubricated with lubricating oil, the amount of oil should be added to the specified position.

 

4. The container containing lubricating oil or grease should be clean and sealed at ordinary times, and there should be no dust, iron filings and other sundries, so as not to damage the bearing.

 

5.The motor bearing is made of nano grease, which is characterized by high temperature resistance (125 °C), but is easily soluble in water, so it cannot be used for the lubrication of water pump bearings.