TIMKEN关于轴承游隙的介绍
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Fitting practice 公差配合 Temperature gradients 温度梯度 Desired operating RIC 想要达到的径向内部游隙
Operating RIC = Initial RIC - reduced RIC by fits - reduced RIC by thermal 运行时的RIC=初始 初始RIC-通过配合减少的 通过配合减少的RIC-通过热量减少的 通过热量减少的RIC 运行时的 初始 通过配合减少的 通过热量减少的
CRB Overview.ppt
23332YMW33C4 = Spherical Roller Bearing 340 / 339.957 339.910 / 339.946 0.011 T / 0.090 T 160 / 159.974 159.933 / 159.959 0.015 L / 0.067 L
α steel α steel
106 = 11.7 × o C 6 10 = 6. 5 × o F
Where: α = coefficient of thermal expansion 热膨胀系数
Τ = temperature gradient between inner and outer race 在内滚道和外滚道之间 的温度差
1
Clearances 游隙
Other Type = Radial Internal Clearance 其它类型 = 径向内部游隙
CRB Overview.ppt
2
Clearances 游隙
Internal radial clearances affect bearing performance 内部径向游隙影响轴承的性能 Clearances are selected based upon: 选择游隙基于: 选择游隙基于:
Where: P = total RIC reduction P=RIC总减少量 Assumptions: 假设 Solid shaft 实心轴 Large housing OD 大轴承架外径 Similar materials 类似的材料 between bearing and mounting components 在轴承和装配件之间
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CRB Overview.ppt
Total radial internal clearance reduction is: 总的径向内部游隙减少量为: 总的径向内部游隙减少量为: P = RIC inner RIC outer
4
Clearances 游 隙
Clearance reduced by thermal gradients 通过热量差减少游隙 Reduced RIC by thermal = α x T x Inner Ring OD 通过热量减少的RIC= α x T x 内圈外径 通过热量减少的
CRB Overview.ppt
3
Βιβλιοθήκη Baidu
Clearances 游隙
Clearance reduced by interference fits: 通过过盈配合来减少游隙: 通过过盈配合来减少游隙:
RICinner RICouter Shaft OD = Fit × Inner Ring OD Outer Ring ID = Fit × Hsg ID
* RIC specs in Service Catalog p. E21 在服务目录E21页中的RIC 规格
CRB Overview.ppt
6
Clearances 间隙 RIC Setting – Example
PART #: Bearing O.D. Housing Bore Housing Fit Bearing Bore Shaft O.D. Shaft Fit R.I.C Before 0.221 / 0.279 mm R.I.C. After 0.145 / 0.269 mm
CRB Overview.ppt
5
Clearances 间隙
Select an RIC*选择一个 选择一个RIC 选择一个 C type All new CRB designs will conform to the ISO standard 所有新的CRB设计将遵照 设计将遵照ISO标准 所有新的 设计将遵照 标准 R type Old Torrington designs may still be encountered 旧的托林顿设计还是可能碰到 Special clearances 特殊的游隙 Mod codes can be created to control more critical applications 建立修正编码以控制更多的临界应用
Operating RIC = Initial RIC - reduced RIC by fits - reduced RIC by thermal 运行时的RIC=初始 初始RIC-通过配合减少的 通过配合减少的RIC-通过热量减少的 通过热量减少的RIC 运行时的 初始 通过配合减少的 通过热量减少的
CRB Overview.ppt
23332YMW33C4 = Spherical Roller Bearing 340 / 339.957 339.910 / 339.946 0.011 T / 0.090 T 160 / 159.974 159.933 / 159.959 0.015 L / 0.067 L
α steel α steel
106 = 11.7 × o C 6 10 = 6. 5 × o F
Where: α = coefficient of thermal expansion 热膨胀系数
Τ = temperature gradient between inner and outer race 在内滚道和外滚道之间 的温度差
1
Clearances 游隙
Other Type = Radial Internal Clearance 其它类型 = 径向内部游隙
CRB Overview.ppt
2
Clearances 游隙
Internal radial clearances affect bearing performance 内部径向游隙影响轴承的性能 Clearances are selected based upon: 选择游隙基于: 选择游隙基于:
Where: P = total RIC reduction P=RIC总减少量 Assumptions: 假设 Solid shaft 实心轴 Large housing OD 大轴承架外径 Similar materials 类似的材料 between bearing and mounting components 在轴承和装配件之间
�
CRB Overview.ppt
Total radial internal clearance reduction is: 总的径向内部游隙减少量为: 总的径向内部游隙减少量为: P = RIC inner RIC outer
4
Clearances 游 隙
Clearance reduced by thermal gradients 通过热量差减少游隙 Reduced RIC by thermal = α x T x Inner Ring OD 通过热量减少的RIC= α x T x 内圈外径 通过热量减少的
CRB Overview.ppt
3
Βιβλιοθήκη Baidu
Clearances 游隙
Clearance reduced by interference fits: 通过过盈配合来减少游隙: 通过过盈配合来减少游隙:
RICinner RICouter Shaft OD = Fit × Inner Ring OD Outer Ring ID = Fit × Hsg ID
* RIC specs in Service Catalog p. E21 在服务目录E21页中的RIC 规格
CRB Overview.ppt
6
Clearances 间隙 RIC Setting – Example
PART #: Bearing O.D. Housing Bore Housing Fit Bearing Bore Shaft O.D. Shaft Fit R.I.C Before 0.221 / 0.279 mm R.I.C. After 0.145 / 0.269 mm
CRB Overview.ppt
5
Clearances 间隙
Select an RIC*选择一个 选择一个RIC 选择一个 C type All new CRB designs will conform to the ISO standard 所有新的CRB设计将遵照 设计将遵照ISO标准 所有新的 设计将遵照 标准 R type Old Torrington designs may still be encountered 旧的托林顿设计还是可能碰到 Special clearances 特殊的游隙 Mod codes can be created to control more critical applications 建立修正编码以控制更多的临界应用