Full complement cylindrical roller bearings rust prevention in the paint

Rust paint is the feature of in a sealed motor, the start motor sounds good, but in the warehouse for a period of time, motor become very abnormal sound, remove Full complement cylindrical roller bearings serious rust. Many manufacturers will be deemed to be the front bearing, the main problem is that the insulating paint volatile acid under certain temperature and humidity of metal corrosion and protection, the formation of corrosive substances, channel sliding bearing corrosion damage.Sliding bearing life is manufacturing, assembly, closely related to the use, must make every link, in order to make the country works the best bearing, so as to prolong the service life of bearing.

1, some enterprises in the process of production coating machine Spherical roller bearings no rust cleaning procedures and oil seal antirust packing in strict accordance with the requirements of the coating machine in the process of machining bearing parts and assembly after coating machine bearing products antirust processing. Such as ring in the process of turnover turnover time is too long, outer cylindrical contact corrosive liquids or gases, etc.

2, some enterprises in the production of antirust oil, cleaning products such as kerosene used quality can not reach the requirements of the technology.

3, due to a coating machine bearing steel price drop down again, resulting in coating machine bearing steel quality decline gradually. Such as non-metallic impurities content in steel on the high side, the increase of sulfur content in steel making material itself corrosion resistance drops), metallurgical structure deviation, etc. Is now used in the coating machine production enterprise source of bearing steel is miscellaneous, steel quality ichthyosaurs fraud.

4, part of the enterprise's poor environmental conditions, harmful content is high in the air, flow field is too small, it is difficult to effectively antirust processing. Coupled with the hot weather, the production workers in violation of the phenomenon such as antirust procedures were there.

5, some enterprises anti-rust paper, nylon paper (bag) and plastic tube coating machine, such as sliding bearing packing material is not accord with the requirement of roll coater bearing oil seal rustproof packaging is one of corrosion factors.

6, some enterprises coating machine sliding bearing ring turning small allowance and allowance of grinding, the oxide coating on the outer circle, failed to completely remove decarburization layer is also one of the reasons.

The choice of Deep groove ball bearing in the bearing shell

Deep groove ball bearing on the job as a result of the journal and bearing contact will produce friction, surface cause fever, even "killed", so in the design of the bearing, should choose Excavator Slewing Bearing materials with good sex of anti-friction bearings, suitable lubricant and appropriate supply method is adopted to improve the bearing structure for thick film lubrication, etc.

1, tile surface corrosion: spectrum analysis found that non-ferrous metal element concentration anomaly; Spectrum appeared a lot of non-ferrous metal components of sub-micron wear particles; Lubricating oil excess moisture, acid value exceeds bid.

2, shaft neck surface corrosion: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint.

3, a shaft neck surface strain: iron spectrum have iron series cutting grinding grain or black oxide particles, metal surface heat tint.

4, tile back micro wear: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum wear submicron particles, lubricating oil moisture and acid value anomalies.

5, a bearing surface strain: iron spectrum found cutting abrasive, abrasive ingredients for non-ferrous metal.

double direction thrust ball bearing manufacturing materials

1) metal materials, such as bearing alloy, bronze, aluminum alloy, zinc base alloy, etc

double direction thrust ball bearing, bearing alloy is also called the white metal, tin, lead, antimony and other metal alloy, because of its good wear resistant, high plasticity, running-in performance is good, good thermal conductivity and resistance to adhesive and good and good and oil adsorption, therefore applicable to the overloading, high-speed cases, the strength of the bearing alloy is small, the price is more expensive, must be cast in bronze, steel or cast iron shell, form a thin coating.

2) the porous metal material (powder metallurgy materials)

Porous metal materials, metallurgical bearing is a kind of powder material, it has porous organization, if the immersion in the lubricating oil, full of lubricating oil in the pores, into the oil bearing, has self lubricating performance. The toughness of the porous metal material is small, only suitable for smooth without impact load and medium and small speed.

3) non-metallic materials

Commonly used bearing bearing plastic: plastic with phenolic plastics, nylon, ptfe and so on, plastic bearings have larger compressive strength and abrasion resistance, oil and water lubrication, also has the self-lubricating properties, but poor thermal conductivity.

Plastic bearings and metal sliding bearing the following differences:

1, the single direction thrust ball bearing are lubricating material, long service life. The metal sliding bearing lubrication layer is only 0.003 mm of PTFE surface, thin layer when the friction after it proclaims the end of the service life; 2, plastic bearings use will not happen in phenomenon of rust and corrosion resistance, and metal type of bearing is easy to rust cannot be applied to chemical liquid; 3, plastic lighter than metal bearing quality, it is more suitable for modern lightweight design trend; 4, rolling mill bearing manufacturing cost is relatively lower metals; Plastic bearings is the injection molding processing and become more suitable for mass production; 5, plastic bearings in operation without any noise, has a certain vibration absorption function; Due to plastic bearing is metal sliding bearing has many advantages, the production of plastic bearing is expanding increasingly, the use of plastic bearing situation is outspread, from fitness equipment to the office equipment and automobile industry, and so on all use plastic bearings, run on the roads of the car was not to use plastic bearings. Plastic bearing the market foreground is wide!