Timken轴承寿命和轴向调节

轴承寿命预载荷轴向游隙过载轻预载荷轴向调节量负载区在180º和360º之间负载区等于360º负载区等于180º负载区小于180º轴向游隙径向游隙零游隙〔线到线接触〕BearingLife–vs.-Setting

轴承寿命和轴向调节BearingSetting

轴承轴向调节径向游隙轴向游隙1.Calculatelaterallossduetotightfits

计算由于紧配合导致的横向损耗

2.Calculatelaterallossfromthermalchanges

计算热量变化导致的横向损耗

3.ChooseBEPorBPLbasedon1&2

基于第1和第2条来选择BEP或BPL

4.Calculatemountedendplayrange

计算装配后的轴向游隙范围

5.Calculateoperatingsettingrange

计算工作时的轴向调节范围BenchEndPlay(BEP)

轴承轴向间隙ToestablishBEP

建立轴向游隙

TRBBenchEndPlay

圆锥滚子轴承初始游隙=MountingsettingBenchEndPlayorRadialInternalClearance(C2,C0,C3…)=Operatingsetting-Temperatureeffect________________________________-Fittingeffect______________RadialInternalClearance

径向内部游隙=安装调整初始游隙或径向内部游隙(C2,C0,C3…)=运行时的调整-影响配合______________-温度影响________________________________BenchEndPlay

初始游隙EstablishBenchEndPlay确定初始游隙Chosenfordesiredperformance

根据所需要的性能做选择Operating

Setting=BEP--LaterallossduetothermalchangesLateralloss

duetofits运行轴向调节=BEP--热量变化导致的横向损耗配合导致的横向损耗

ShaftID2Conebore1-(

)1-(

)LateralLossduetoConeFit

由于内圈配合导致的横向损耗Min.fitMax.fitXX=

ShaftID2MeanconeODXK-factor0.39ConeboreMeanconeOD

Min.LLMax.LL最小配合最大配合K值Cone

BoreMean

ConeODShaftID平均内圈外径内圈内孔轴内径最小横向损耗

最大横向损耗

LateralLoss–DuetoCupFit

由于外圈配合导致的横向损耗()MeancupID

2HousingOD()Min.fitMax.fitXX=

CupOD2HousingODXMeancupIDCupODK-factor0.39Min.L.L.Max.L.L.1-1-Housing

ODCup

ODMean

CupID平均外圈内径外圈外径轴承座外径LateralLossduetoHeat

由于热量导致的横向损耗MeanRibDiameter

平均挡边直径RibSpeed(mps)=[meanribdia(mm)xspeed(rpm)]/60/1000挡边速度〔mps〕=[平均挡边速度(mm)x速度(rpm)]/60/1000EstimatedRibDiameter=(ID+OD)/2

估算挡边直径=(内径+外径)/2

RibSpeed

挡边速度

Temp

温度差 0-6mps 5.6ºC 6-10mps 11.1ºC 10-20mps 16.7ºC >20mps HighSpeed高速 -PrototypeTest原型测试LateralLossduetoHeat

由于温升导致的横向损耗

Temp=Temperaturedifferentialbetweenconeandcup温度差=内圈和外圈之间的温度差1MeanCupID平均外圈内径2T/2+fordirectmounting-forindirectmountingLateralLossduetoHeat

由于热量产生的横向损耗Measurebearingonbench(dropm