Oil-bearing installation prerequisites tips
2015-11-16
Oil-free self-lubricating bearings: it is based on steel substrates, oil-bearing intermediate layer sintering spherical bronze powder, the surface rolling polytetrafluoroethylene and the mixture was made of lead. It has a low coefficient of friction, wear and corrosion-resistant oil-free self-lubricating
And long life characteristics, using it can reduce costs, reduce noise, prevent sticky, slippery. It is widely used in various sliding parts of machinery such as printing presses, textile machines, hydraulic truck, tobacco machines, pharmaceutical machinery,
Fitness, micro-motors, automobiles, motorcycles and so on. Its installation process requires little knowledge to master as follows:
1, should determine the axis, with the surface of the shaft case whether there bruises, projections, etc.
2, if there is dust or sand attached to the bearing surface of the shell mold.
3, although minor bruises, projections, etc., if you want to remove oil grindstone or fine sandpaper.
4, in order to avoid bruising during accommodated, surface of the shaft and the shaft housing should wipe a small amount of lubricating oil. To bearing shall be mounted on the axis of the inner urging, to bearings mounted on the bearing housing, it shall be in the outer ring biased. To the shaft
When Cheng urged, make sure to pay attention to the power of the vertical and uniform down, partial play will make the bearing injuries. To do this absolutely avoid bias fight.
5, oil-free bearings and seal retainer plate also must not be biased. Use a hammer and casing installation method is a method commonly used in general, because it will damage the bearings, so do not directly beat. Always as
Figure general, the sleeve in the middle and beat into the medium. Hammers should lightly beat. On the mechanical structure, the inner and outer ring are a tight fit, use a pad, make sure the power is applied to the inner and outer ring simultaneously pushed into it. If only
In the inner ring plus forced into, the dielectric strength will be pressed into the outer ring of the ball and, therefore, can cause scars in the orbital plane. To a large margin of bearings mounted on the shaft, in clean oil, the bearing is heated to 80 to 90 degrees, the inner
Diameter expansion method to install, has been widely adopted.
6, bearing hardness, have reduced due to overheating of the consideration, therefore, must not exceed 100 degrees. In this case, bearings must use a wire to suspension, or placed on top of a wire link, the support plate, not placed in the bottom. axis
Cheng reached the desired temperature (100 degrees), it should be immediately removed from the tank, quickly set into the shaft, the bearing will shrink as the temperature drops, sometimes shoulder between the shaft and the bearing end surface, will have a gap, therefore, need
The use of tools, the bearing axis direction to compress.
(Chat Online)
