Bearing and method of inhibiting crack propagation in a bearing component
AssigneeAktiebolaget Skf
InventorsAndriy Volodymyrovych Rychahivskyy, Charlotte Vieillard, Xiaobo Zhou
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Abstract
The present invention relates a bearing comprising a liquid lubricant and at least one ceramic component (105, 115, 125), which, during operation of the bearing, is subject to rolling contact load. According to the invention, a tribological surface (110, 120, 130) of the at least one ceramic component is impregnated with a sealant, such that the liquid lubricant is prevented from entering discontinuities in the tribological surface.
Claims11
A bearing comprising:
- a liquid lubricant, and
- at least one ceramic component which, during operation of the bearing, is subject to a rolling contact load, wherein
- a tribological surface of the at least one ceramic component is impregnated with a sealant, such that the liquid lubricant is prevented from entering discontinuities in the tribological surface.
The bearing according to claim to 6, wherein the bearing is a ball screw or a roller screw and the tribological surface is an outer surface of a rolling element.
A method of inhibiting crack propagation in a component of a bearing that is subject to fatigue loading, the bearing component having a tribological surface which, in operational use of the bearing, is wetted by a lubricant, wherein,
- the method comprises a step of impregnating the tribological surface with a sealant, such that discontinuities in the tribological surface are sealed to prevent ingress of the lubricant.
Dependencies are inferred from the claim text.