轴瓦

浏览量:

轴瓦

Engine bearing
 
轴瓦属于最简单的一类轴承,仅有轴承面而无滚动元件。依赖油膜支撑机械元件做相对运动。在发动机内主要分为曲轴瓦和连杆瓦。
Engine bearing (2 pcs Slide bearing) is the simplest type of bearing,comprising just a bearing surface and no rolling elements. It rides on a thin oil film supporting a mechanical element and providing its movement relatively .There are Main Bearing and Connecting rod bearing used in engines.
 
 
 
 
轴瓦结构
BEARING TERMINGOLOGY
 
①自由弹张量
Free Spread
②轴瓦宽度
Bearing Width
③轴瓦厚度
Wall Thickness
④轴瓦背面
Bearing Back
⑤轴瓦表面
Bearing Surface
⑥定位唇
Locating Lug
⑦油孔
Oil Hole
⑧油槽
Oil Groove
⑨法兰
Flange
 
 
 
 
 
轴瓦材料(BEARING MATERIAL)
 
内衬材料 SAE牌号 材料成分 性能对比
LINING MATERIAL REF. SAE COMPOSITION PERFORMANCE COMPARISON
铝基合金(Aluminum)
AlSn4Cu SAE770 Al: 余量(Remainder) 承载性(Load capacity):2星
    Sn: 3-4% 耐磨性(Wear resistant):2星
    Cu: 0.7-1.3% 嵌入性(Embedability):3星
        抗咬合性(Anti-seizure):3星
        耐腐蚀性(Anti-corrosive):4星半
         
AlSn20Cu SAE783 Al: 余量(Remainder) 承载性(Load capacity):2星半
    Sn: 5.5-7% 耐磨性(Wear resistant):3星半
    Cu: 0.7-1.3% 嵌入性(Embedability):4星半
        抗咬合性(Anti-seizure):4星半
        耐腐蚀性(Anti-corrosive):3星
         
AlSi11Cu SAE784 Al: 余量(Remainder) 承载性(Load capacity):4星
    Si: 10-12% 耐磨性(Wear resistant):3星半
    Cu: 0.7-1.3% 嵌入性(Embedability):3星
        抗咬合性(Anti-seizure):3星
        耐腐蚀性(Anti-corrosive):3星
         
AlSn8Si2.5Pb2Cu SAE787 Al: 余量(Remainder) 承载性(Load capacity):3星半
    Sn: 6-9% 耐磨性(Wear resistant):3星半
    Si: 2-3% 嵌入性(Embedability):3星半
    Pb: 1.5-2.5% 抗咬合性(Anti-seizure):4星
    Cu: 0.5-1.0% 耐腐蚀性(Anti-corrosive):4星
    Cr: 0.1-0.3%  
         
         
AlSn9Si2.5Pb1.7 SAE788 Al: 余量(Remainder) 承载性(Load capacity):3星半
    Sn: 7-10% 耐磨性(Wear resistant):4星
    Si: 2-3% 嵌入性(Embedability):4星
    Pb: 1.0-2.5% 抗咬合性(Anti-seizure):4星
        耐腐蚀性(Anti-corrosive):4星
         
铜基合金 (Copper)
CuPb24Sn4 SAE797 Cu: 余量(Remainder) 承载性(Load capacity):4星
    Pb: 19-27% 耐磨性(Wear resistant):3星半
    Sn: 3-4.5% 嵌入性(Embedability):4星半
        抗咬合性(Anti-seizure):4星半
        耐腐蚀性(Anti-corrosive):3星半
         
CuPb30 SAE48 Cu: 余量(Remainder) 承载性(Load capacity):3星
    Pb: 26-33 耐磨性(Wear resistant):3星半
    Sn: 0.50% 嵌入性(Embedability):3星半
        抗咬合性(Anti-seizure):4星
        耐腐蚀性(Anti-corrosive):3星
         
CuPb24Sn SAE49 Cu: 余量(Remainder) 承载性(Load capacity):3星半
    Pb: 19-27% 耐磨性(Wear resistant):3星
    Sn: 0.6-2% 嵌入性(Embedability):4星半
        抗咬合性(Anti-seizure):4星半
        耐腐蚀性(Anti-corrosive):3星半