Method of providing a consistent preload on thrust bearings...

Details Method of providing a consistent preload on thrust bearings... Method of providing a consistent preload on thrust bearings...

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 27/08 (2006.01) F16C 19/52 (2006.01) F16C 39/02 (2006.01) F16C 41/02 (2006.01)

Patent

CA 2522374

A method of providing a consistent preload on thrust bearings in a bearing assembly. A first step involves placing against an inner race and an outer race of a bearing stack of thrust bearings, deformable shims made from a material having a relatively flat stress-strain curve after its yield stress has been exceeded. A second step involves preloading the deformable shims beyond their yield point in situ until a predetermined preload tolerance is reached.

Il s'agit d'une méthode qui apporte une précontrainte régulière sur les butées d'un coussinet. La première étape consiste à placer contre une bague de roulement intérieure et une bague de roulement extérieure d'un empilage de roulements à billes de butées des cales déformables. Ces cales sont constituées d'un matériau qui présente une courbe de déformation aux contraintes relativement horizontale après dépassement de sa tension d'écoulement. La seconde étape consiste à précontraindre les cales déformables au-delà du seuil d'écoulement in situ, jusqu'à l'atteinte d'une tolérance de précontrainte prédéterminée.

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