CN201100318Y - Expansion deep gouge ball bearing - Google Patents

Abstract

The utility model relates to an expansion deep-furrow ball bearing, which comprises a body (1), wherein at least one track of annular recesses (2) are opened on the external wall of an outer ring of the body (1), and an O-shaped ring (21) made of macromolecule material projecting out of the external wall of the outer ring is arranged in the recess (2). The deep-furrow ball bearing has the beneficial effects that when the deep-furrow ball bearing is temperature-distorted in the work, the O-shaped ring made of macromolecule material is expanded to be tightly applied to an outer shell hole for preventing the peristaltic deformation of the outer ring, which can lead the bearing to conveniently achieve the radial interference compensation in the work, thereby enhancing the service life of the rolling bearing.

Description

The tight moldeed depth ditch ball bearing that expands

Technical field

The utility model relates to a kind of deep groove ball bearing, relates in particular to the outer diametric plane of this deep groove ball bearing.

Background technique

Bearing Installation supports the position at main frame, because the heating of the running of bearing itself and bearing chamber will cause bearing inner member (referring generally to outer ring, inner ring, steel ball etc.) heating to be expanded, meanwhile bearing chamber itself also will be owing to heating is expanded.Because the material of bearing and bearing chamber is different, its thermal expansion coefficient is different, after the bearing self-temperature changes and the bearing chamber temperature changes, will make bearing outer ring and bearing chamber take place radially to swell.Because material, the size that bearing chamber swells will be bigger than bearing.So originally the bearing chamber that matches with bearing outer ring might and bearing outside diameter between produce the gap, will cause bearing in the process of running, to be wriggled.If the running speed of bearing itself will directly influence the service behaviour of bearing very soon.

Summary of the invention

The utility model technical issues that need to address have provided a kind of tight moldeed depth ditch ball bearing that expands, and are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: body; On the outer ring outer wall of described body, have at least one circular groove; In described groove, settle the macromolecular material O type circle of ring outer wall outside protruding.

Compared with prior art, the beneficial effects of the utility model are: at work during temperature distortion, its polymer composite ring expands, fit tightly with shell aperture, can prevent the outer ring creeping deformation, make bearing realize the radial interference compensation at work expediently, thus the life-span of improving rolling bearing.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

As seen from Figure 1: the utility model comprises: body 1; On the outer ring outer wall of described body 1, have at least one circular groove 2; In described groove (2), settle the macromolecular material O type circle (21) of ring outer wall outside protruding.

The utility model has seal groove on the external diameter of outer ring, be embedded with " O " type circle at seal groove.During design, make the external diameter of macromolecular material consistent in than large-temperature range with the rates of thermal expansion of light alloy bearing case internal diameter as far as possible.Therefore, this bearing directly is pressed into when using in the light alloy bearing case, can in than large-temperature range, obtains effective magnitude of interference.

When the profile shaft pressure-bearing that should tightly expand is gone in the bearing housing, must not damage macromolecular material, this is crucial.For this reason, bearing housing internal diameter ingress must have 10 to spend to the assembling chamfering of 15 degree.Simultaneously, to avoid during installation bearing to tilt.

Through the vibration comparative trial, every index all reaches requirement; May be used on household electric appliance, automobile and motorcycle, automobile gearbox with on the deep groove ball bearing, and produce good economic benefit and social benefit.

Claims (1)

1. the tight moldeed depth ditch ball bearing that expands comprises: body (1); It is characterized in that: on the outer ring outer wall of described body (1), have at least one circular groove (2); In described groove (2), settle the macromolecular material O type circle (21) of ring outer wall outside protruding.