CN202140422U

CN202140422U - High-accuracy deep groove ball bearing

Info

Publication number: CN202140422U
Application number: CN201120200182U
Authority: CN
Inventors: 李东炬
Original assignee: DALIAN DAYOU HI-TECH CERAMIC Co Ltd
Current assignee: DALIAN DAYOU HI-TECH CERAMIC Co Ltd
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-02-08
Anticipated expiration: 2021-06-15

Abstract

The utility model relates to a high-accuracy deep groove ball bearing, which belongs to the field of manufacture of bearings. The high-accuracy deep groove ball bearing has the advantages of being compact and simple in structure, high in accuracy, long in service life and the like. A rolling body is made of ceramic materials, and the density of the ceramic rolling body is smaller than that of steel so that the weight of the deep groove ball bearing is relatively light. Centrifuge effects to an outer ring can be reduced in rotation, and service life of the deep groove ball bearing can be prolonged. The outer ring and an inner ring are both made of Cr14Mo4 bearing steel, and a retainer is made of 1Cr17Ni2 materials, thereby further improving accuracy of a middle bearing and prolonging the service life.

Description

A kind of highi degree of accuracy deep groove ball bearing

Technical fieldThe utility model relates to a kind of highi degree of accuracy deep groove ball bearing, belongs to bearing and makes the field.

Background techniqueDeep groove ball bearing is comparatively common a kind of in the rolling bearing, and deep groove ball bearing is divided into single-row and two types of biserials, and deep groove ball bearing is mainly used in and bears pure radial load, also can bear radial load and thrust load simultaneously.When it only bore pure radial load, wrapping angle was zero.When deep groove ball bearing has bigger radial internal clearance, have the performance of angular contact bearing, can bear bigger thrust load.The friction factor of deep groove ball bearing is very little, and limit speed is also very high, and particularly under the very big operating mode that runs up of thrust load, deep groove ball bearing specific thrust ball bearing more has superiority.Deep groove ball bearing is simple in structure, is convenient to series to produce in enormous quantities, and manufacture cost is also lower, uses very general.But existing deep groove ball bearing, its precision is not high, and impact resistance is relatively poor.

Summary of the inventionIn view of the defective that prior art exists, the purpose of the utility model is that a kind of compact structure will be provided, the highi degree of accuracy deep groove ball bearing that rotating speed is high.

For realizing above-mentioned purpose, the technical solution that the utility model adopted:

A kind of highi degree of accuracy deep groove ball bearing; Comprise bearing outer ring, bearing inner race, rolling element and retainer, it is characterized in that: described is to be provided with raceway between bearing outer ring and the inner ring, and said rolling element is contained in the retainer; The said retainer that has rolling element is placed in the raceway; The rolling element material is a silicon nitride ceramics, and outer ring and inner ring all adopt the Cr14Mo4 Bearing Steel, and retainer adopts the 1Cr17Ni2 material.

Because it is simple to the utlity model has compact structure, precision is high, characteristics such as long service life, and its rolling element adopts stupalith, because the density of ceramic rolling element is lower than steel, weight is lighter, to the centrifugal action of outer ring, improves working life in the time of can reducing rotation; Outer ring and inner ring all adopt the Cr14Mo4 Bearing Steel, and retainer adopts the 1Cr17Ni2 material, can further improve the precision and the working life of middle (center) bearing.

Description of drawings

Fig. 1 is the utility model structure sectional view;

Reference character shown in Figure 1 is following: l, bearing outer ring, 2, retainer, 3, bearing inner race, 4, rolling element.

Embodiment

At a kind of highi degree of accuracy deep groove ball bearing shown in Figure 1; Comprise bearing outer ring 1, bearing inner race 3, rolling element 4 and retainer 2, described is to be provided with raceway between bearing outer ring 1 and the inner ring 3, and said rolling element 4 is contained in the retainer 2; The said retainer 2 that has rolling element 4 is placed in the raceway; It is characterized in that: rolling element 4 materials are silicon nitride ceramics, and the Cr14Mo4 Bearing Steel is all adopted with inner ring 3 in outer ring 1, and retainer 2 adopts the 1Cr17Ni2 material.

Rolling element 4 adopts silicon nitride ceramic material; Because pottery almost is not afraid of corrosion; And its density is lower than steel, and weight is more light, and the centrifugal action to the outer ring when therefore rotating can reduce by 40%; And then working life prolong greatly, and be suitable for being covered with operation under the mal-condition of Korrosionsmedium.　

Because it is not the modular ratio steel of pottery is high, yielding when stressed simultaneously, therefore help improving operating rate, and reach higher precision.

Claims

1. highi degree of accuracy deep groove ball bearing; Comprise bearing outer ring, bearing inner race, rolling element and retainer, it is characterized in that: described is to be provided with raceway between bearing outer ring and the inner ring, and said rolling element is contained in the retainer; The said retainer that has rolling element is placed in the raceway; The rolling element material is a silicon nitride ceramics, and outer ring and inner ring all adopt the Cr14Mo4 Bearing Steel, and retainer adopts the 1Cr17Ni2 material.