Lubrication methods and advantages and disadvantages of rolling bearings

Core Tips: Lubrication Methods and Advantages and Disadvantages of Rolling Bearings 1. Purpose of Lubrication The purpose of lubrication of rolling bearings is to reduce the internal friction and wear of the bearings and prevent burn-in. The lubrication effect is as follows: 1) Reduce
Lubrication methods and advantages and disadvantages of rolling bearings
    1. Purpose of lubrication
    The purpose of lubrication of rolling bearings is to reduce internal friction and wear of the bearings and prevent burn-in. The lubrication effect is as follows:
    1) Reduce friction and wear
    In the mutual contact portion of the ferrule, the rolling element and the cage constituting the bearing, metal contact is prevented, and friction and wear are reduced.
    2) Extend fatigue life
    The rolling element fatigue life of the bearing is prolonged when the rolling contact surface is well lubricated during rotation. Conversely, if the oil viscosity is low and the thickness of the lubricating oil film is not good, it is shortened.
    3) Eliminate friction heat and cooling
    The circulation oil supply method or the like can discharge the heat generated by the friction or the heat from the outside to cool the oil. Prevent the bearing from overheating and prevent the lubricant from aging itself.
    4) Other
    There is also the effect of preventing foreign matter from entering the inside of the bearing or preventing rust and corrosion.
    2, lubrication methods and advantages and disadvantages
    The lubrication methods of the bearings are grease lubrication and oil lubrication. In order to make the bearing function well, first, choose a lubrication method that suits the conditions of use and the purpose of use. Lubricity of oil lubrication predominates if only lubrication is considered. However, grease lubrication has the advantage of simplifying the structure around the bearing.

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NSK bearing radial clearance adjustment method

Core Tip: The commonly used method for adjusting the radial clearance of NSK bearings is as follows: 1. For the backlash of cylindrical and elliptical bearing bushes, it can be adjusted by manual grinding or by adjusting the scraping in the bearing. 2
     The usual methods for adjusting the radial clearance of NSK bearings are as follows:

     1. For the backlash of the cylindrical and elliptical bearing bushes, it can be adjusted by hand grinding or scraping in the bearing.

     2. For the top clearance of cylindrical and elliptical bearing bushes, it can be adjusted by manual grinding or when the condition is allowed to be padded in the bearing.

     3. For multi-oil wedge fixed bearing bushes, in principle, it is not allowed to repair and adjust the bearing bush clearance. When the clearance is not suitable, the new tile should be replaced.

     4. For multi-oil wedge tilting bearing bushes, it is not allowed to repair the tile. If the gap is not suitable, the tile should be replaced. For the tile with adjustable thickness, the amount of the tile can be adjusted by adding a stainless steel pad under the adjustment block behind the tile or by thinning the thickness of the adjustment block. Note that for multi-oil wedge tilting bushings, the thickness error between the same set of tiles should be less than 0.01mm.

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