JPS5520914A - Pivot bearing and method of manufacturing the same - Google Patents
Pivot bearing and method of manufacturing the sameInfo
- Publication number
- JPS5520914A JPS5520914A JP9216778A JP9216778A JPS5520914A JP S5520914 A JPS5520914 A JP S5520914A JP 9216778 A JP9216778 A JP 9216778A JP 9216778 A JP9216778 A JP 9216778A JP S5520914 A JPS5520914 A JP S5520914A
- Authority
- JP
- Japan
- Prior art keywords
- approx
- bearing body
- oil
- temperature
- bearing
- 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.)
- Pending
Links
Abstract
PURPOSE: To improve the antishock and durability of a pivot bearing by quenching a bearing body 13Cr stainless steel from a temperature of 700W1100°C, treating it by a sub-zero process and tempering it in oil.
CONSTITUTION: A bearing body 7 is initially quenched from a temperature of 700W 1100°C in nonacidic atmosphere. After it is, for example, retained at approx. 850°C initially for approx. 20 minutes in this case, it is retained at a temperature of approx. 1050°C. for 30 minutes, and then cooled in nitrogen gas or oil. The body 7 is then treated by a sub-zero process, and tempered then in oil. Thus, there is formed a hardened layer 11 having higher hardness by Vickers Hv than 500 and containing martensite structure over the depth of deeper than 10μ at least from the surface of the bearing body 7 at the bearing body 7 of 13Cr stainless steel formed with a bearing portion 8 at one end thereof.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9216778A JPS5520914A (en) | 1978-07-28 | 1978-07-28 | Pivot bearing and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9216778A JPS5520914A (en) | 1978-07-28 | 1978-07-28 | Pivot bearing and method of manufacturing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5520914A true JPS5520914A (en) | 1980-02-14 |
Family
ID=14046868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9216778A Pending JPS5520914A (en) | 1978-07-28 | 1978-07-28 | Pivot bearing and method of manufacturing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5520914A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160108961A1 (en) * | 2014-10-17 | 2016-04-21 | Jtekt Corporation | Bearing ring and rolling bearing |
US10538821B2 (en) | 2014-10-17 | 2020-01-21 | Jtekt Corporation | Heat treatment apparatus and heat treatment method |
-
1978
- 1978-07-28 JP JP9216778A patent/JPS5520914A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160108961A1 (en) * | 2014-10-17 | 2016-04-21 | Jtekt Corporation | Bearing ring and rolling bearing |
US9709099B2 (en) * | 2014-10-17 | 2017-07-18 | Jtekt Corporation | Bearing ring and rolling bearing |
US10538821B2 (en) | 2014-10-17 | 2020-01-21 | Jtekt Corporation | Heat treatment apparatus and heat treatment method |
US11319605B2 (en) | 2014-10-17 | 2022-05-03 | Jtekt Corporation | Heat treatment apparatus and heat treatment method |
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