CN201159245Y - Triplex row cylindrical roller bearing for roller mill - Google Patents

Triplex row cylindrical roller bearing for roller mill Download PDF

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Publication number
CN201159245Y
CN201159245Y CNU2007200163521U CN200720016352U CN201159245Y CN 201159245 Y CN201159245 Y CN 201159245Y CN U2007200163521 U CNU2007200163521 U CN U2007200163521U CN 200720016352 U CN200720016352 U CN 200720016352U CN 201159245 Y CN201159245 Y CN 201159245Y
Authority
CN
China
Prior art keywords
bearing
outer ring
row cylindrical
ring
cylindrical 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.)
Expired - Lifetime
Application number
CNU2007200163521U
Other languages
Chinese (zh)
Inventor
王劲松
庄权
邹俭波
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.)
Wafangdian Bearing Group Corp
Original Assignee
Wafangdian Bearing Group Corp
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 Wafangdian Bearing Group Corp filed Critical Wafangdian Bearing Group Corp
Priority to CNU2007200163521U priority Critical patent/CN201159245Y/en
Application granted granted Critical
Publication of CN201159245Y publication Critical patent/CN201159245Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers

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  • Rolling Contact Bearings (AREA)

Abstract

The utility model belongs to the bearing technical field, relating to a three-row cylindrical roller bearing for rolling mills, which is composed of an outer ring, a roller, a middle space ring, an inner ring, a retaining bracket and a semi-retaining bracket. The thickness of the wall of the outer ring is 35-60mm, and a composite tissue layer of martensite and ferrito martensite is uniformly arranged on a surface layer of the outer ring. The three-row cylindrical roller bearing increases the wearability of the outer edge of the bearing, and resolves the problems of wear of the outer edge of the bearing and short service life.

Description

A kind of three-row cylindrical roller bearing that is used for milling train
Technical field
The utility model belongs to technical field of bearings, relates to a kind of three-row cylindrical roller bearing that is used for milling train.
Background technique
Cold rolling mill rolling accuracy height, back-up roll adopts three-row cylindrical roller bearing, because precision is high and rolling load is big, the reason of outer ring surface hardness and centre hardness, the outer ring external diameter weares and teares and causes precise decreasing, is to improve precision, will the grinding external diameter, cause reduce the working life of bearing.The user can't use.The respective shaft bearing outer-ring that has is cracked, and bearing can't use.
Summary of the invention
In order to improve outer ring external diameter abrasiveness, improve the precision of bearing and the working life of bearing.Heat treatment hardness, wall thickness that the purpose of this utility model just provides a kind of outer ring have a kind of high strength of specific (special) requirements, a kind of roller bearing of high-accuracy milling train.
Technical solution of the present utility model is a kind of three-row cylindrical roller bearing that is used for milling train, is made up of outer ring 1, roller 2, middle spacer ring 3, inner ring 4, retainer 5 and half retainer 6, and outer ring 1 wall thickness is 35~60mm.Be provided with equally distributed martensite and bainite complex tissue layer in 1 surface layer of described outer ring.
The beneficial effects of the utility model are: the utility model has improved the wearability of bearing outside diameter, has solved the problem of lacking in bearing outside diameter wearing and tearing, working life.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, outer ring, 2, roller, 3, middle spacer ring, 4, inner ring, 5, retainer, 6, half retainer.
Embodiment
As shown in drawings, the utility model is made up of outer ring 1, roller 2, middle spacer ring 3, inner ring 4, retainer 5 and half retainer 6, according to radial load and the required precision that bearing bears, analyze through calculating with limited circle, selecting the thickness of outer ring 1 wall thickness the best is 50mm; 2 choose specific outer ring 1 material (GCr18Mo or GCr15); Adopt special heat-treatment quenching mode, making the metallographic structure in the 1 certain layer depth of outer ring is tiny and equally distributed martensite and bainite complex tissue layer.After heat treatment more than the surface hardness HRC61.1 surface, outer ring slowly is decremented to HRC41 to centre hardness, outer ring 1 surperficial high strength, heart portion high tenacity.The stress of outer ring 1 working surface is pressure stress.Through the outer ring 1 of special thermal treatment technological method, intensity is better than the steel for carburizing Carburization Treatment, and toughness is better than the conventional marquench of high-carbon-chromium bearing steel to be handled, and significantly improves working life and safety in utilization.

Claims (2)

1, a kind of three-row cylindrical roller bearing that is used for milling train is made up of outer ring (1), roller (2), middle spacer ring (3), inner ring (4), retainer (5) and half retainer (6), it is characterized in that, outer ring (1) wall thickness is 35~60mm.
2, a kind of three-row cylindrical roller bearing that is used for milling train according to claim 1 is characterized in that, surface, described outer ring (1) is provided with equally distributed martensite and bainite complex tissue layer.
CNU2007200163521U 2007-11-28 2007-11-28 Triplex row cylindrical roller bearing for roller mill Expired - Lifetime CN201159245Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200163521U CN201159245Y (en) 2007-11-28 2007-11-28 Triplex row cylindrical roller bearing for roller mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200163521U CN201159245Y (en) 2007-11-28 2007-11-28 Triplex row cylindrical roller bearing for roller mill

Publications (1)

Publication Number Publication Date
CN201159245Y true CN201159245Y (en) 2008-12-03

Family

ID=40109829

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200163521U Expired - Lifetime CN201159245Y (en) 2007-11-28 2007-11-28 Triplex row cylindrical roller bearing for roller mill

Country Status (1)

Country Link
CN (1) CN201159245Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029272A (en) * 2019-04-17 2019-07-19 燕山大学 The tissue modulation method and nanometer bainite bearing steel of high tenacity bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029272A (en) * 2019-04-17 2019-07-19 燕山大学 The tissue modulation method and nanometer bainite bearing steel of high tenacity bearing
CN110029272B (en) * 2019-04-17 2020-07-03 燕山大学 Structure regulating method of high-toughness bearing and steel for nano bainite bearing

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20081203