JPS57174414A - Outer ring of roller and bearing in one - Google Patents

Outer ring of roller and bearing in one

Info

Publication number
JPS57174414A
JPS57174414A JP6014581A JP6014581A JPS57174414A JP S57174414 A JPS57174414 A JP S57174414A JP 6014581 A JP6014581 A JP 6014581A JP 6014581 A JP6014581 A JP 6014581A JP S57174414 A JPS57174414 A JP S57174414A
Authority
JP
Japan
Prior art keywords
outer ring
hardening
bearing
supporting base
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6014581A
Other languages
Japanese (ja)
Other versions
JPS6152215B2 (en
Inventor
Tsukasa Takeshita
Yoshio Fukuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOYO NETSU SHIYORI KK
Daibea Co Ltd
Original Assignee
KOYO NETSU SHIYORI KK
Osaka Bearing Seizo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KOYO NETSU SHIYORI KK, Osaka Bearing Seizo Co Ltd filed Critical KOYO NETSU SHIYORI KK
Priority to JP6014581A priority Critical patent/JPS57174414A/en
Publication of JPS57174414A publication Critical patent/JPS57174414A/en
Publication of JPS6152215B2 publication Critical patent/JPS6152215B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

PURPOSE:To manufacture an outer ring which is excellwnt in strength and shock resistance, by cooling the inside circumferential surface and the outside circumferential surface of the outer ring by each different method, and forming the boundary part of hardening phase of the inside surface and nonhardening phase of the outside surface to a specific recessed curve, when hardening the outer ring of a roller and bearing in one. CONSTITUTION:When hardening an outer ring of a mast roller and bearing in one of a fork lift, the outer ring 10 heated to a temperature exceeding a transformation point is placed on a stepped part 21 of a supporting base 20. In this case, a supporting margin 22 of a diameter D2 is formed on this stepped part 21, and also a cover member 25 hving a marginal part 26 of an inside diameter D1 is fixed to an end 13 of the outer ring 10. In this state, the inside circumference is quenched and hardened by jetting cooling water from a jet hole 24 provided on a cooling water passage 23 of the inside of the supporting base, rotating the supporting base 20. At the same time the outside surface of the outer ring is cooled by compressed air jetted from a jet hole 28 of a pipe 27. In this way, it is possible to form the outer ring 10 which consists of a hardening part 11 having a boundary part 12 whose thickness of ends 13, 14 is t2 and t3 and whose radius of curvature is R, and a nonhardening and quenching part 15 of the surface, and is excellent in its strength and shock resistance.
JP6014581A 1981-04-21 1981-04-21 Outer ring of roller and bearing in one Granted JPS57174414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6014581A JPS57174414A (en) 1981-04-21 1981-04-21 Outer ring of roller and bearing in one

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6014581A JPS57174414A (en) 1981-04-21 1981-04-21 Outer ring of roller and bearing in one

Publications (2)

Publication Number Publication Date
JPS57174414A true JPS57174414A (en) 1982-10-27
JPS6152215B2 JPS6152215B2 (en) 1986-11-12

Family

ID=13133678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6014581A Granted JPS57174414A (en) 1981-04-21 1981-04-21 Outer ring of roller and bearing in one

Country Status (1)

Country Link
JP (1) JPS57174414A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010024530A (en) * 2008-07-24 2010-02-04 Nsk Ltd Rolling bearing and manufacturing method therefor
JP2010025311A (en) * 2008-07-24 2010-02-04 Nsk Ltd Rolling bearing and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010024530A (en) * 2008-07-24 2010-02-04 Nsk Ltd Rolling bearing and manufacturing method therefor
JP2010025311A (en) * 2008-07-24 2010-02-04 Nsk Ltd Rolling bearing and method of manufacturing the same

Also Published As

Publication number Publication date
JPS6152215B2 (en) 1986-11-12

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