SKF轴承计算方法分析课件.ppt
SKF General Catalogue 5000Nov 12, 20031SKF综合型录综合型录5000版版SKF General Catalogue 5000轴承尺寸的选择和轴承的寿命轴承尺寸的选择和轴承的寿命Selection of bearing size and bearing lifenmSKF General Catalogue 5000Nov 12, 20032 SKF 与与ISO标准标准SKF and ISO standards执行执行ISO_281:1990/修订版修订版2:2000（以及新的（以及新的DIN ISO281修订本修订本1和和4- 2003）Implementation of: ISO_281:1990/Amd.2:2000 (and new DIN ISO 281 Addendum 1 and 4- 2003)SKF General Catalogue 5000Nov 12, 20033润滑剂对寿命的影响润滑剂对寿命的影响Lubrication effects on life完全润滑完全润滑Full film混合润滑混合润滑Mixed lubrication边界润滑边界润滑Boundary lubricationEP添加剂添加剂EP additives !k k 4k k 4k k 1SKF General Catalogue 5000Nov 12, 20034全新全新DIN ISO标准：标准：ISO_281:1990/修订修订2:2000New DIN ISO standards: ISO_281:1990/Amd.2:2000pSKF110SKF1nmPCaaLaaL SKF General Catalogue 5000Nov 12, 200354. 计算流程计算流程 Calculation flow寿命寿命Life !SKF General Catalogue 5000Nov 12, 20036新的技术特性图表新的技术特性图表 T07：润滑油：润滑油New - Technical - T07 : LubricationISO VG -VI=95运行粘度运行粘度运行温度运行温度平均直径平均直径最最 低低 粘粘 度度 值值SKF General Catalogue 5000Nov 12, 20037扩展后的洁净度系数选用表（扩展后的洁净度系数选用表（ISO DIN 281:2002）Extended table for selection of h hc（ISO DIN 281:2002)污染程度极高清洁度杂质尺寸在油膜厚度之内，实验室状态。高清洁度润滑油经过极精细过滤，密封油脂润滑轴承。一般清洁度润滑油经过精细过滤，具有非接触密封的脂润滑轴承轻度污染在润滑剂中有轻度的污染物典型污染 轴承受到其他零件磨损微粒的污染 严重污染轴承工作环境污染严重，并且轴承密封不充分。非常严重的污染系数h hch hcSKF General Catalogue 5000Nov 12, 20038改进后的径向球轴承改进后的径向球轴承aSKF 系数系数Improved aSKF for: radial ball bearingsFactor aSKF for radial ball bearingsh hc Pu/P0.0050.020.050.20.5250.010.11aSKF0.050.20.52520500.1110k k 4210.80.60.50.40.30.20.150.10.0050.020.050.20.520.010.11Explorerc用于径向球轴承的系数 askfSKF General Catalogue 5000Nov 12, 20039改进后的径向滚子轴改进后的径向滚子轴承承aSKF系数系数Improved aSKF for: radial roller bearingsFactor aSKF for radial roller bearingsh hc Pu/P0.0050.020.050.20.5250.010.11aSKF0.050.20.52520500.1110k k 4210.80.60.50.40.30.20.150.10.0050.020.050.20.520.010.11cExplorer用于径向滚子轴承的系数 askfSKF General Catalogue 5000Nov 12, 200310改进后的推力球轴承改进后的推力球轴承aSKF系数系数Improved aSKF for: thrust ball bearingsFactor aSKF for thrust ball bearingsh hc Pu/P0.0050.020.050.20.5250.010.11aSKF0.050.20.52520500.1110k k 4210.80.60.50.40.30.20.150.1c用于推力球轴承的系数 askfSKF General Catalogue 5000Nov 12, 200311改进后的推力滚子轴改进后的推力滚子轴承承aSKF系数系数Improved aSKF for: thrust roller bearingsFactor aSKF for thrust roller bearingsh hc Pu/P0.0050.020.050.20.5250.010.11aSKF0.050.20.52520500.1110k k 4210.80.60.50.40.30.20.150.10.0050.020.050.20.520.010.11CExplorer用于推力滚子轴承的系数 askfSKF General Catalogue 5000Nov 12, 2003125. 最终对最终对kappa值和寿命的影响值和寿命的影响Resulting effect on kappa and life程度不同，取决于轴承的类型，规格和运行参数程度不同，取决于轴承的类型，规格和运行参数Vary, depending on bearing type, size and operational parameters最具意义的是低最具意义的是低kappa值的运行条件值的运行条件most significant increase is for the low kappa conditions kappa 值的效应增加：值的效应增加：1020% Typical increase in kappa:1025 % 明显延长寿命：明显延长寿命：30150% Typical increase in life:30-150 %SKF General Catalogue 5000Nov 12, 200313全新全新aSKF曲线图曲线图New aSKF diagramsh hc Pu/P 0.0050.010.020.050.10.20.51250.050.10.20.5125102050k = 410.60.450.300.150.1寿命延长！寿命延长！Life will go up !aSKFSKF General Catalogue 5000Nov 12, 200314表表6: 污染负荷比污染负荷比 h hc(Pu/P) 23 Table 6: Contamination-load rate h hc(Pu/P) 23轴承类型轴承类型 Bearing type比值比值 Rate h hc(Pu/P) 23 对对SKF标准轴承级标准轴承级 For SKF standard class SKF探索者级探索者级 SKF Explorer class 径向轴承径向轴承 Radial bearings球轴承 Ball bearings 滚子轴承 Roller bearings 推力轴承推力轴承 Thrust bearings球轴承 Ball bearings 滚子轴承 Roller bearings0,050,320,160,790,040,23-0,56对一个具有良好表现的应用，可以使用固有的方法确定对一个具有良好表现的应用，可以使用固有的方法确定 h hc For existing good performing applications one can use :Implicit method for the selection of h hc aSKF a23 h hc = h hc(Pu/P) 23 / (Pu/P)h hc = h hc(Pu/P) 23 / (Pu/P)( () )P/P05, 0uc h hFactor aSKF for radial ball bearingsh hc Pu/P0.0050.020.050.20.5250.010.11aSKF0.050.20.52520500.1110k k 4210.80.60.50.40.30.20.150.10.0050.020.050.20.520.010.11ExplorercSKF General Catalogue 5000Nov 12, 200315对用户的价值对用户的价值Value for customers修正的修正的SKF额定寿命，改善了轴承寿命预测的精确性额定寿命，改善了轴承寿命预测的精确性The SKF rating life is revised to improve accuracy in predictions of bearing life改善后的精确结果在用户的运行中提高了可靠性改善后的精确结果在用户的运行中提高了可靠性Improved accuracy results in improved reliability in customer operations提高的可靠性对用户而言是更低的成本和更好的效益提高的可靠性对用户而言是更低的成本和更好的效益Improved reliability for the customer results in lower costs and improved profitability寿命不是单纯的！寿命不是单纯的！SKF拥有保障可靠运行和优化他的设计的工具拥有保障可靠运行和优化他的设计的工具和知识和知识Life is NOT simple! SKF has the tools and know-how to secure reliable operations and optimise his designs.
