CN201621187U

CN201621187U - Fireplace bearing

Info

Publication number: CN201621187U
Application number: CN2010201135696U
Authority: CN
Inventors: 李芝根; 卢顺俊
Original assignee: NINGBO WTOO INDUSTRIAL Co Ltd
Current assignee: NINGBO WTOO INDUSTRIAL Co Ltd
Priority date: 2010-02-10
Filing date: 2010-02-10
Publication date: 2010-11-03
Anticipated expiration: 2020-02-10

Abstract

The utility model relates to mechanical components, in particular to a fireplace bearing comprising an outer ring, an inner ring, a steel ball, a retainer and dust covers, wherein the steel ball is arranged between the inner ring and the outer ring. The key points are as follows: the retainer is arranged at the center of a gap between the inner ring and the outer ring, and the steel ball is connected with the retainer; the dust covers are fixedly connected on the upper end surface and the lower end surface at the gap between the inner ring and the outer ring; and the radial internal clearances among the inner ring, the outer ring and the steel ball are 0.003-0.006mm. As the inner ring and the outer ring of the fireplace bearing are treated with high temperature tempering, the heat expansion performances of the inner ring and the outer ring are more approximate when the fireplace bearing and the inner ring and the outer ring after the high-heat treatment are in the high-temperature work state, thus ensuring the stability of the radial internal clearance in high temperature. The bearing has good performance, can be applied on a fireplace by replacing import bearings, and is better in market prospect.

Description

The fireplace bearing

Technical field

The utility model relates to component of machine, is a kind of fireplace bearing.

Background technique

On the existing fireplace electrical machinery of ventilator is installed, the bearing that uses on this motor is the vitals that the fan blade of ventilating fan can normally be rotated, because the temperature during machine operation is about 200 °, so general bearing can not satisfy its requirement, all use imported bearing on the fireplace motor now, but the imported bearing price is comparatively expensive to cause the cost of fireplace to increase, sales volume reduces, so be badly in need of a kind of price comparatively cheaply and can well satisfy the bearing of motor usage requirement.

Summary of the invention

For solving above-mentioned deficiency, the utility model is intended to make it can satisfy the usage requirement of electrical machinery of ventilator on the fireplace for related domain provides a kind of fireplace bearing.The purpose of this utility model is to realize by following technological scheme.

A kind of fireplace bearing, this bearing comprises outer ring, inner ring, steel ball, retainer and dust cover, and steel ball places between inner ring and the outer ring, it is characterized in that described retainer places the center in space between inner ring and the outer ring, and steel ball is connected with retainer; Be fixedly connected with dust cover on the upper and lower end face of gap between inner ring and the outer ring; Be provided with radial internal clearance between described inner ring, outer ring and the steel ball, and radial internal clearance is arranged between 0.003～0.006mm.

Because special thermal treatment is passed through after the assay was approved again through Vehicle Processing in inner ring, the outer ring of this fireplace bearing, be about to behind inner ring, the outer ring normal quenching at 190～200 ℃ of high-temperature temperings that carry out 4 hours. so more approaching through the hot expansibility of the hot expansibility of the inner ring behind the high-temperature tempering, outer ring and bearing Internal and external cycle under the hot operation state, radial internal clearance is between 0.003～0.006mm when making fireplace bearing working state.And the inner ring of this fireplace bearing, the outer ring through after the special thermal treatment on the basis of former deep groove ball bearing technology to inner ring, each parameter of raceway groove grinding of outer ring has been carried out strict control, for bear vibration is met the requirements, strengthened inner ring, super smart quality control behind the correct grinding ditch of outer ring, trap, clean, greasing, gland adopts special device, it is clean that the bearing assembly environment keeps, thereby make the performance of this fireplace bearing identical with imported bearing, owing to belong to independent research production, the price of this fireplace bearing is also comparatively cheap, so it can be applicable on the fireplace of various models that market prospects are preferably arranged.

Description of drawings

Fig. 1 is a sectional view of the present utility model, has done A portion among the figure and has confined.

Fig. 2 is the A portion enlarged view of Fig. 1.

The sequence number of above accompanying drawing and title: 1, outer ring, 2, inner ring, 3, steel ball, 4, retainer, 5, dustproof frame, 6, radial internal clearance.

Embodiment

Now in conjunction with the accompanying drawings structure of the present utility model and usage mode are described further.As shown in Figure 1, this fireplace bearing is by outer ring 1, inner ring 2, steel ball 3, retainer 4 and dustproof frame 5 are formed, inner ring, be provided with radial internal clearance 6 between outer ring and the steel ball, the difference of its technological process and common practise is the outer ring, inner ring through Vehicle Processing after the assay was approved again through special thermal treatment, be about to the outer ring, inner ring behind normal quenching at 190～200 ℃ of high-temperature temperings that carry out 4 hours, this technology makes the outer ring, hot expansibility when the hot expansibility of inner ring and bearing are worked under the condition of high temperature is comparatively approaching, so make radial internal clearance 6 be controlled between 0.003～0.006mm.In addition, the machining accuracy of this fireplace bearing reaches the P5 level, fine finishing outer ring ditch out of roundness≤0.00035mm, inner ring ditch out of roundness≤0.00035mm, Roughness Surface on Control is at Ra≤0.00003mm, the part that the fireplace bearing is formed adopts aqua to clean, and trap adopts automatic trap instrument, and greasing, gland adopt the automatic greasing gland machine, reduce personal factor, and retainer shaft takes up the cleaning of joining environment.

Claims

1. fireplace bearing, this bearing comprises outer ring (1), inner ring (2), steel ball (3), retainer (4) and dust cover (5), steel ball places between inner ring and the outer ring, it is characterized in that described retainer places the center in space between inner ring and the outer ring, and steel ball is connected with retainer; Be fixedly connected with dust cover on the upper and lower end face of gap between inner ring and the outer ring; Be provided with radial internal clearance (6) between described inner ring, outer ring and the steel ball, and radial internal clearance is 0.003～0.006mm.