Global Patent Index - EP 1048744 A4

EP 1048744 A4 20010228 - BEARING STEEL EXCELLENT IN ROLLING FATIGUE LIFE

Title (en)

BEARING STEEL EXCELLENT IN ROLLING FATIGUE LIFE

Title (de)

LAGERSTAHL MIT HERVORRAGENDER WALZERMÜDUNGSBESTÄNDIGKEIT

Title (fr)

ACIER POUR ROULEMENTS PRESENTANT UNE EXCELLENTE RESISTANCE AU ROULEMENT

Publication

EP 1048744 A4 20010228 (EN)

Application

EP 99951124 A 19991028

Priority

  • JP 9905986 W 19991028
  • JP 31879598 A 19981110

Abstract (en)

[origin: EP1048744A1] The present invention relates to a bearing steel which is used as a component for rolling bearings, such as roller bearings and ball bearings, and more particularly, which is used as a component for bearings having superior rolling contact fatigue life. That is, the bearing steel having superior rolling contact fatigue life contains 0.95 to 1.10 mass% of C, more than 1.60 to 3.50 mass% of Cr, 0.0015 mass% or less of O, 0.0010 mass% or less of Sb, and the balance being Fe and incidental impurities. Alternatively, the bearing steel may further contain at least one element selected from the group consisting of 2.5 mass% or less of Si, 2.5 mass% or less of Mn, 2.5 mass% or less of Mo, 3.0 mass% or less of Ni, 1.5 mass% or less of Nb, 1.5 mass% or less of V, 2.0 mass% or less of Cu, and 0.08 mass% or less of Al. <IMAGE>

IPC 1-7

C22C 38/00; F16C 33/62

IPC 8 full level

C22C 38/00 (2006.01); C22C 38/18 (2006.01); C22C 38/60 (2006.01)

CPC (source: EP KR)

C22C 38/18 (2013.01 - EP KR); C22C 38/60 (2013.01 - EP)

Citation (search report)

  • [AD] EP 0825270 A1 19980225 - KAWASAKI STEEL CO [JP], et al
  • [X] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 04 31 May 1995 (1995-05-31)
  • [X] PATENT ABSTRACTS OF JAPAN vol. 018, no. 285 (C - 1206) 31 May 1994 (1994-05-31)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 01 28 February 1995 (1995-02-28)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 01 28 February 1995 (1995-02-28)
  • [A] "ASM Speciality Handbook, Carbon and Alloy Steels.", 1996, ASM INTERNATIONAL, ASM, MATERIALS PARK, OH 44073-0002, OHIO, USA, ISBN: 0-87170-557-5, XP002155310
  • See references of WO 0028100A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1048744 A1 20001102; EP 1048744 A4 20010228; CA 2317658 A1 20000518; JP 2000144326 A 20000526; JP 3779078 B2 20060524; KR 100508463 B1 20050817; KR 20010033504 A 20010425; TW 454042 B 20010911; WO 0028100 A1 20000518

DOCDB simple family (application)

EP 99951124 A 19991028; CA 2317658 A 19991028; JP 31879598 A 19981110; JP 9905986 W 19991028; KR 20007007005 A 20000622; TW 88119071 A 19991102