Analysis of the information and layout of the bearing bush

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Analysis of the information and layout of the bearing bush

Source: China Bearing Network Time: 2014-06-08
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The bearing bush is on the bearing; it is directly touched by the shaft; it accepts the load and has relative motion with the shaft. In order to reduce the conflict; the wear and tear puts forward various requirements for the bearing material; in addition to the demand conflict, the inter-chamber conflict coefficient. Record Fu æ‚– 1. It should have the required compressive strength, fatigue strength and ability to accept impact. The bearing alloy thickness is (0. 013-0. 13) mm.
2. Good anti-adhesion. When the load is large, the rotation speed is high; the bearing gap is over. The acetylene 桓撸蝗蠡涣 保 保 (14) 饩 ≡ ≡ ≡ ≡ 系 ヅ洌 ヅ洌 ヅ洌 ヅ洌 Σ Σ Σ 匙 匙 匙 匙 匙 匙 匙 匙Calling Han.
3. The ability to adapt and tolerate foreign bodies. Low hardness; good plasticity and low elastic modulus have excellent adaptability and ability to contain foreign bodies.
4. Good corrosion resistance; low price; come from the full. After the formation of colloidal deposits by oxidation; corrosion effect on the bearing material.
First, commonly used data bearing bush and bearing lining commonly used data is divided into two categories of metal materials and non-metal materials.
Metal information:
1. Cast iron is generally gray cast iron; wear-resistant cast iron; ductile iron is suitable for low-speed light load; or open-type transmission bearing mechanism: sheet or spherical graphite composition in the guess; cover the surface to form a smooth graphite layer.
2. Bearing alloy ZChSnSb10-6 has good corrosion resistance; strong resistance to gluing; strong connection with steel back; expensive; suitable for high speed and heavy load; such as rolling stock.
ZChPbSb16-16-2 is resistant to gluing; poor thermal expansion; brittle for medium speed medium load.
This kind of babbitt alloy has good wear resistance; it is resistant to gluing; it has large thermal conductivity; it is most suitable for bearing material.
3. Bronze ZCuPb30 is cast or sintered attached to the inner and outer surfaces of the steel back bush. A good anti-gluing function ZCuSn10-l has good friction and wear resistance; the best bearing material; high speed and heavy load hardness and strength ratio High alloy; corrosion resistant; but poor running; the matching journal has higher hardness and smoothness; suitable for medium speed and heavy load.
4. Aluminum alloy - bimetallic low tin aluminum alloy; containing Sn0. 5%
The information and layout of the bushshaft sliding bearing is high-tin aluminum alloy; containing Sn20%; the locomotive diesel engine uses such materials with high strength; corrosion resistance; good thermal conductivity.
5. Ceramic metal iron powder ten graphite powder or copper powder ten graphite powder → restricted forming → burning layout into pore layout; pores accounted for 15 ~ 35% → oil-soaked → oil bearing.
This kind of bearing bush is only suitable for smooth load and medium and small speed because of poor tolerance; it is used in occasions with poor smooth conditions.
Non-metallic materials:
Easy to run and wear debris;
The possibility of small glue with the journal affinity is small. Plastic: phenolic plastic; polyacyl aldehyde (nylon), PTFE has greater compressive strength; anti-adhesion and wear resistance; good corrosion resistance; conflict coefficient. τ 萌 婀惴 婀惴 坏 坏 既 圆 圆Vision 蠡 绻跹 绻跹 绻跹 凰 凰 凰 enough to reach 2. Rubber is made of hardened rubber; used for shaft oscillating and skewing; compared to dirty occasions; water smoothing 2. bearing layout integral integral casting split type

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