Title:
ROLLING BEARING, WHEEL SUPPORT DEVICE, AND MAIN SHAFT SUPPORT DEVICE FOR WIND POWER GENERATION
Document Type and Number:
Japanese Patent JP2020046068
Kind Code:
A
Abstract:
To provide a rolling bearing in which peeling resistance of a DLC film is improved even when coming into contact with another member under a high load or slipping condition due to a poorly lubricated state or under a condition in which foreign matter is mixed, and the original properties of the DLC film is exhibited, which has therefore excellent seizure resistance, wear resistance and corrosion resistance.SOLUTION: A deep groove ball bearing 1 comprises: an inner ring 2 having an inner ring raceway surface 2a on the outer periphery thereof; an outer ring 3 having an outer ring raceway surface 3a on the inner periphery thereof; a plurality of rolling elements 4 rolling between the inner ring raceway surface 2a and the outer ring raceway surface 3a; and a cage 5 that retains the rolling elements 4, wherein a hard film 8 is formed on the inner ring raceway surface 2a or the like, and the hard film 8 is in rolling contact and sliding contact with another bearing member. The hard film 8 is a film having a structure including: a ground layer; a mixture layer which has a gradient composition and is mainly formed of WC and DLC which are formed on the ground layer; and a surface layer mainly formed of DLC formed on the mixture layer, and the indentation hardness of the surface layer, as measured by the ISO14577 method, is 9-22 GPa.SELECTED DRAWING: Figure 1
Inventors:
NAKANISHI MASAKI
MIKAMI HIDENOBU
MIKAMI HIDENOBU
Application Number:
JP2019034126A
Publication Date:
March 26, 2020
Filing Date:
February 27, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/66; C01B32/05; C23C14/06; F16C19/06; F16C19/36; F16C19/38
Attorney, Agent or Firm:
Wake Hikari
Wake Manipulation
Wake Manipulation