Title:
ROLL-SUPPORTING DEVICE IN PAPER MACHINE
Document Type and Number:
Japanese Patent JP3712557
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a roll-supporting device in a paper machine, hardly suffering surface damage to a raceway surface of a bearing even in a high temperature environment and capable of securing a long durable life.
SOLUTION: At least an inner ring 11 and an outer ring 13 of a self-aligning roller bearing for supporting a roll neck part 3 of a drier roll are composed of a steel material containing ≥0.3 and ≤3.0 wt.% Si, ≥0.1 and ≤3.0 wt.% Ni, ≥0.05 and ≤1.0 wt.% V, and ≥0.05 and <0.25 wt.% Mo singly or in combination, and formed so that the surface hardness may be ≥58 HRC of Rockwell hardness to make the material and the surface hardness after the hardening and tempering processes excellent in rolling fatigue characteristics and surface damage resistance, stable even at high temperature, and to elongate endurance life of the roll-supporting device used in a high temperature environment.
Inventors:
Kikuo Maeda
Hiroshi Murakami
Yukihisa Tsumori
Hiroshi Murakami
Yukihisa Tsumori
Application Number:
JP5295599A
Publication Date:
November 02, 2005
Filing Date:
March 01, 1999
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C33/62; C22C38/00; C22C38/12; D21F5/02; D21F7/00; (IPC1-7): D21F7/00; C22C38/00; C22C38/12; F16C33/62
Domestic Patent References:
| JP5140696A | ||||
| JP9072342A | ||||
| JP9329139A | ||||
| JP2000246410A | ||||
| JP4254572A | ||||
| JP48006919A |
Attorney, Agent or Firm:
Bunji Kamada
Higashio Masahiro
Torii Kazuhisa
Higashio Masahiro
Torii Kazuhisa