CN2627275Y

CN2627275Y - Hardness gradation roller bearing

Info

Publication number: CN2627275Y
Application number: CN 03258984
Authority: CN
Inventors: 徐群生; 陈宝国; 冒桂馨
Original assignee: Jiangsu Wanda Special Bearing Co Ltd
Current assignee: Jiangsu Wanda Special Bearing Co Ltd
Priority date: 2003-06-18
Filing date: 2003-06-18
Publication date: 2004-07-21
Anticipated expiration: 2013-06-18

Abstract

The utility model relates to a roller bearing with gradual hardness, which consists of a bearing inner loop, a bearing outer loop, a steel ball, as well as a cage, the bearing outer loop is manufactured by adopting the medium carbon steel as the material, the hardness gradually softens from the inner raceway to outer lane exterior and interior, thereby buffering the mechanical shock through the material hardness change on the basis of meeting the mechanical performance, improving the receiving force status of the raceway exterior and interior, obviously increasing the tensile strength, as well as improving the load capacity for impact resistance; because the steel ball adopts the precision steel ball with high precision degree as the roller, thereby reducing the mechanical wear and improving the performance.

Description

A kind of gradual change hardness rolling bearing

The utility model relates to a kind of rolling bearing.

Relevant by retrieval patent documentation does not retrieve the rolling bearing identical with the utility model structure at present as yet.Existing rolling bearing generally is material with the Bearing Steel, obtains its product after processing, heat treatment.Because material and hardness, for the equipment of the complicated load of this class carrying of fork truck, the phenomenon that this class bearing is prone to wearing and tearing, damages so be necessary to develop new rolling bearing, is produced actual needs to satisfy.

The purpose of this utility model is that a kind of improvement on existing rolling bearing basis will be provided, and has characteristics such as buffering, wear-resisting, shock resistance, can satisfy to have fork truck now and carry stress alternation a kind of gradual change hardness rolling bearing in raising forklift door frame working life.

Technical characteristics of the present utility model is: at a kind of gradual change hardness rolling bearing of considering to be designed on the basis of damping vibration, reliable performance effectively to be made of bearing inner ring, outer race, steel ball, retainer, between bearing inner ring and outer race, be provided with steel ball, retainer is fastened on steel ball between bearing inner ring, the outer race, it is that material is made that described outer race adopts middle-carbon steel, and its hardness is by internal raceways progressively deliquescing in the table of outer ring; Described steel ball is the highi degree of accuracy accurate steel balls.

The utility model has the advantages that; Because it is that material is made that outer race adopts middle-carbon steel, and internal raceways hardness in the table of outer ring is taked the mode of progressively deliquescing, thereby satisfying the vibrations that come buffer mechanism on the basis of mechanical property by the firmness change of material, improved the force-bearing situation in the raceway table, obviously increase tensile strength, improved capacity of resisting impact load; Because it is rolling element that steel ball adopts the highi degree of accuracy accurate steel balls, thereby has reduced mechanical wear, has improved mechanical property; Because simple in structure, cost is low, reliable performance is so there is very big practical and popularizing value.

Below with reference to description of drawings embodiment of the present utility model:

Accompanying drawing is the structural representation of a kind of gradual change hardness of the utility model rolling bearing.

With reference to accompanying drawing, the utility model is made up of bearing inner ring 1, outer race 2, steel ball 3, retainer 4, between bearing inner ring 1 and outer race 2, be provided with steel ball 3, retainer 4 is fastened on steel ball 3 between bearing inner ring 1, the outer race 2, it is that material is made that outer race 2 adopts middle-carbon steel, the Hardness Design of outer race 2 become by internal raceways 5 in the table of outer ring 6 progressively the mode of deliquescing form through heat treatment; Steel ball 3 adopts the highi degree of accuracy accurate steel balls.

Claims

1, a kind of gradual change hardness rolling bearing is made of bearing inner ring [1], outer race [2], steel ball [3], retainer [4], between bearing inner ring [1] and outer race [2], be provided with steel ball [3], retainer [4] is fastened on steel ball [3] between bearing inner ring [1], the outer race [2], it is characterized in that: it is that material is made that described outer race [2] adopts middle-carbon steel, and its hardness is by internal raceways [5] [6] progressively deliquescing in the table of outer ring; Described steel ball [3] is the highi degree of accuracy accurate steel balls.