1. The bearings cleaning
Bought a new bearing it, the vast majority are coated with grease. The main bearing grease used to prevent rust, not lubrication, therefore, must be thoroughly clean to install and use. Cleaning method is: with all the temporary sealed bearings, can use gasoline or kerosene to clean. With thick oil and rust all oils such as industrial use vaseline rustproof bearing, can use first 10 transformer oil or oil heating dissolve cleaning (oil temperature must not exceed 100 ℃), the bearing dipped into the oil. To remove rust grease melt after cooling, garnish with gasoline or kerosene to clean. Gas phase, anti-rust agent all water and other water soluble anti-rust materials rustproof bearing, usable soap class and other cleaning agents, such as 664, go add, 6503, 6501, the cleaner.
 
With gasoline or kerosene cleaned, should be a knead bearing inner circle, another hand slowly rotating outside, until the roller bearings, groove, keep on the shelf completely wash off oil, then clean the surface of the net bearing outer ring. Cleaning should also pay attention to, began to slow turn up-to-date, reciprocating shaking, and shall not be too firm rotation, otherwise, bearing groove and rolling elements to be attached to the dirt from the damage. Bearings cleaning the amount is larger, in order to save gas, kerosene and guarantee to clean quality, can divide a thick, fine cleaning two steps.
 
For the inconvenience of remove bearing, can use tears oil washing. That is 90 °-100 ℃ temperature of the hot oil pour hot, make old oil melt and with hook or small spoon in the old oil bearing dig net, then use kerosene will the remnants of the old oil bearing internal, oil, rinse, and eventually with gasoline flush again can.
 
Bearing cleaning quality inspection by feel. Bearing after cleaning them, watch the inside its outer ring rolling word, rolling body and maintains a gap there will always be some in the rest of the oil. When examination, can use first clean feeler remaining oil blow out, apply to thumb and index finger rub grind slowly back and forth, fingers if sasha vujacic sound, explain bearing not clean, should wash again again. Finally bearing take it on, knead inner ring and outer ring moving horizontally rotating (large bearing can be put in assembly on stage, inner ring mat mat, outer pressure impending, in turn, outer circle) to rotate agile, without block, without beating for qualified.
 
For cleaning good bearing, the reclamation and lubricant, should be put in assembly on stage, the mat with net cloth or paper pad, plastic to cover them, waiting for the assembly, not allowed on the ground or boxes. Move bearing, don't allow direct with the hand, should wear gloves or net cloth with canvas bag up again after bearing will take, otherwise, because hands were khan gas, moisture, make easily produce after contact bearings fingerprint rust.
 
Both sides to take dust cover or sealing ring bearings, and coated with rust and lubrication oil and the bearing, for in manufacturing has injected a grease, so before installation don't cleaning, for example, workers and peasants-12 type, GongWei-12 type dongfanghong tractor hand drag and 20 with 51708 ZHS clutch (the original code 688808) bearing.
 
2. Axis and housings shell holes and other parts of the cleaning
Use first gasoline or kerosene to clean, dry cloth rub-up, then coated with a small amount of oil and installation. These parts after cleaning, which should be paid attention to on the green sand castings are all to completely clear; All the parts of the bearing fits a burr sharp edges, must be removed, in order to avoid the sand residue and metal debris in when installation, fall into the internal bearing, influencing assembly quality.
 
1. Note
Internally, the outer ring of the bearing can be separated, don't put the outer ring exchange each other mistake so as not to affect the quality of contact. The heart ball and spherical roller bearing, not any of the roller bearing out readjusting, in order to avoid the installation position disorders affect precision.
Installation bearing, for convenience of see bearing code, from Ann wrong, should be a literal outward bearing collar is put and installation.
 
2. Bearing and housing heating of shell holes
For large surplus quantity of medium, large bearings, to facilitate the installation, must be put before the heating; A tight fit for the bearing light shell holes (such as aluminum housings), the rigidity and very low, to prevent bearing outer shell of the bearing pressure fashionable hole surface is cut, hair, should also be heating installation. Heating method, generally is bearing or separation will type bearings rings, into the container with a clean the oil tank, oil submerged bearing, even heating. The temperature reaches 80-90 ℃, remove wipe, hot installation. Fuel tank can be used 2-3 mm thick iron plate is made, the tank bottom, 50-70 mm from high with a porous iron plate, bearing in porous on the iron heating. Its purpose is to avoid the precipitation in oil into bearing impurities.
But, for two sides with dust cover or sealing ring bearings, because in the manufacture has joined lubricant, the installation cannot heat.




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