What are the main factors affecting the service life of bearings?

First, the bearing selection stage, need to consider many factors (such as: load, hardness, operating environment, etc.), good bearing design will first make the bearing reach its maximum life value (refer to "factor design considerations")

Second, the correct storage, bearings should preferably be stored in their original packaging before installation. Need to stay in a clean, moisture-free, relatively constant temperature environment. Rolling bearings should be kept away from dust, water and corrosive chemicals. Shaking and vibration can permanently damage the mechanical properties of the bearing, so vibration should be avoided during handling and storage.

Generally, the bearings should be stored horizontally. Some heavy bearings will be deformed due to their own weight after being placed vertically for a long time!

Also, greased (or sealed) bearings require special care because the density of the grease changes over time. When the bearing is used for the first time, there will be a certain degree of rotational noise. Therefore, the shelf life of such bearings should be controlled on the principle of first in, first out!

Third, clean, this is very important for rolling bearings. The rotating surface of the bearing ring is very smooth and very sensitive to damage caused by contaminants. Particulate impurities can be excessively crushed by the rolling elements to create partial pressure in the bearing, which can eventually lead to permanent material fatigue.

Fourth, full equipment and re-installation, the bearings should be carefully installed and disassembled with appropriate tools (refer to the bearing disassembly series video). The right tools should be chosen! Industry experts estimate that 16% of bearings fail prematurely due to incorrect installation. Generally speaking, in general, a proper bearing mounting device is adopted.

However, in the maintenance or replacement work, the environment is diverse! I suggest that you should take a closer look at the relevant drawings, maintenance manuals and product manuals. The components of the bearing should also be kept absolutely clean!
For more products, please visit: http://www.supplyforever.com/

Precision cam splitter bearing repair knowledge

1. Criterion of the size of the cam bearing journal, select the bearing of the same level of patch size.

2. The cam bearing and the bearing hole should have a positive interference.

3, criticized the journal size scraping bearing, the essentials are: the bearing is placed on the corresponding journal, the bearing is removed after several turns of the bearing, the bearing alloy is repaired by the smashing environment, and the bearing is placed on the journal after the scraping After removing the bearing, the snoring environment is repaired again and the shaving is repeated. The thickness of the thick gauge inserted between the bearing and the journal = the common interference between the bearing and the bearing bore + the common clearance between the bearing and the journal, and a slight resistance when the thickness gauge is pulled. In this way, when the cam splitter presses the bearing into the bearing hole, the required common gap can be obtained because the reduction of the inner diameter of the bearing is close to the interference between the bearing and the bearing hole. When scraping, even if the bearing wall thickness is symmetrical, the concentricity of each bearing is covered.

4. Lower the rear end cover of the cylinder block and remove the old bearing. When the new bearing is pressed in, the oil hole should be carefully aligned, and the camshaft bearings of each lane should not be misplaced, so as not to affect the lubrication of the rocker arm mechanism.

5. Insert the cam bearing into the bearing hole and turn it a few times. The environment with proper tightness and snoring area is properly repaired. The main method for checking the common tightness is to apply oil to the bearing. After turning the camshaft a few times, when the splitter uses the finger to move the timing gear, the motor should be rotated without the jamming sign, and the cam bearing can be pulled up and down without significant gap. .
For more products, please visit: http://www.bearingkingdom.com