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Sliding bearing bushing data and layout
Source: China Bearing Network Time: 2013-02-08
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1. It should have satisfactory compressive strength, fatigue strength and ability to withstand 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 æ¡“æ’¸è—è ¡æ¶£ ä¿ ä¿ (14) 饩 ≡ ≡ ≡ ≡ ç³» 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; it is strong against gluing; it is firmly connected 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 bearing. A double metal; excellent anti-glue function
ZCuSn10-l has good friction and wear resistance; the best bearing material; high speed and heavy load; the hardness and strength of this type of material is higher than that of babbitt; corrosion resistance; but poor running consistency; Hardness and finish; suitable for medium speed and heavy load.
4. Aluminum alloy - bimetallic low tin aluminum alloy; containing Sn0. 5%
High-tin aluminum alloy; containing Sn20%; locomotive diesel engine with such information high intensity; 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; small affinity with the journal affinity
1. Plastic: phenolic plastic; polyacyl aldehyde (nylon), PTFE has greater compressive strength; anti-adhesion and wear resistance; good corrosion resistance; conflict coefficient. Ï„ èŒ å©€æƒ´ 婀惴 å å æ—¢ 圆 圆Vision is full of phoenix
2. The rubber is made of hardened rubber; it is used for the shaft to oscillate and skew; the case is more dirty; the water is smooth, the bearing bush layout is integrated, the whole casting split type
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