CN203308928U

CN203308928U - Cage for high-speed precision bearing

Info

Publication number: CN203308928U
Application number: CN201320241452XU
Authority: CN
Inventors: 汪凯; 张贤秋; 徐相东; 李小锋
Original assignee: Zhejiang Wuzhou Xinchun Group Co Ltd
Current assignee: Zhejiang Wuzhou Xinchun Group Co Ltd
Priority date: 2013-05-06
Filing date: 2013-05-06
Publication date: 2013-11-27
Anticipated expiration: 2023-05-06

Abstract

The utility model discloses a cage for a high-speed precision bearing, which comprises an integrally annular main body (1). Multiple pockets (2) for accommodating steel balls are uniformly distributed along the circumferential direction of the main body (1), and multiple oblique ports (3) for guiding grease are formed at the intersected part between an inner side wall (11) of the main body (1) and an inner wall (21) of each pocket (2). According to the utility model, on the basis of not affecting the strength of the cage, the multiple oblique ports (3) for guiding grease are formed at the intersected part between the inner side wall (11) of the main body (1) and the inner wall (21) of each pocket (2), so that the flowing of grease is improved, the viscous resistance is reduced, and the service life of the bearing is prolonged.

Description

A kind of high-speed precision bearing retainer

Technical field:

The utility model relates to technical field of bearings, relates in particular the retainer that a kind of High Speed Precision Angular Contact Ball Bearing is used.

Background technique:

High Speed Precision Angular Contact Ball Bearing is one of key components and parts of fabric machinery, in case bearing failure will destroy axle simultaneously, and the bearing installation replacing time is long, has a strong impact on output.

It is not often fatigue ruption that existing high speed and precision angular contact bearing is lost normal working performance, but because steel ball causes bearing accuracy to reduce with the excessive abrasion between lasso and retainer, and then affect the service behaviour of main frame.

Existing bearing is in order to arrange oil duct on reduce wear general the outer ring at bearing and inner ring, it can only reduce the outer ring of steel ball and bearing and the friction between inner ring, yet the relationship analysis from retainer and steel ball motion, in the process of bearing high speed rotating, viscous effect and centrifugal action due to bearing internal lubrication fat, steel ball drives the lubricating grease rotation, lubricating grease is subject to high speed centrifugation power and outwards throws from inner ring raceway, do not stop to clash into retainer, and pass through from the gap high speed of retainer and steel ball, yet the viscous effect due to lubricating grease, some grease can't be from passing through the gap of retainer and steel ball, reduce the mobility of grease, thereby make grease in the gap of retainer and steel ball reduce even without grease, during operation, just make the wearing and tearing mutually of steel ball and retainer, reduce the working life of bearing.

The model utility content:

The purpose of this utility model is exactly the deficiency for prior art, and provide a kind of high-speed precision bearing retainer, it is on the basis that does not affect retainer intensity, the madial wall of retainer and the inwall intersection in pocket hole are formed to a plurality of angles with guiding grease, improve flowing of lubricating grease, reduce viscous resistance, extend the working life of bearing.

Technology solution of the present utility model is as follows:

A kind of high-speed precision bearing retainer, comprise whole main body in the form of a ring, along the circumferencial direction of main body, is evenly equipped with a plurality ofly be used to holding the pocket hole of steel ball, and the inwall intersection in the madial wall of described main body and pocket hole forms a plurality of angles that guide grease that have.

The inwall intersection in the madial wall of described main body and pocket hole forms four angles, and four angles are uniformly distributed centered by the longitudinal center line in pocket hole.

Described main body is resin material.

Described angle is the breach that bottom surface is arc surfaced.

The beneficial effects of the utility model are:

It is on the basis that does not affect retainer intensity, madial wall (internal diameter sidewall) to the retainer body forms a plurality of angles with guiding grease with the inwall intersection in pocket hole, steel ball is placed in the pocket hole, grease can be from entering angle easily, it improves flowing of lubricating grease, reduce viscous resistance, extend the working life of bearing.

The accompanying drawing explanation:

Fig. 1 is partial structurtes schematic diagram of the present utility model;

Fig. 2 is the partial structurtes schematic diagram of pocket of the present utility model hole and retainer body;

Fig. 3 is partial sectional view of the present utility model.

Embodiment:

Embodiment: see shown in Fig. 1 to 3, a kind of high-speed precision bearing retainer, comprise whole main body 1 in the form of a ring, along the circumferencial direction of main body 1, be evenly equipped with a plurality ofly be used to holding the pocket hole 2 of steel ball, the madial wall 11 of described main body 1 forms a plurality of angles 3 with guiding grease with inwall 21 intersections in pocket hole 2.

The madial wall 11 of described main body 1 forms 3, four angles 3 of four angles with inwall 21 intersections in pocket hole 2 and is uniformly distributed centered by the longitudinal center line in pocket hole 2.

Described main body 1 is resin material, and it can be polyether-ether-ketone resin, PA resin (nylon).

Described angle 3 is the breach of arc surfaced for bottom surface.

Working principle: by the madial wall 11(internal diameter sidewall in retainer main body 1) with inwall 21 intersections in pocket hole 2, form four equally distributed angles 3 with guiding grease, steel ball is placed in pocket hole 2, like this when the bearing High Rotation Speed, grease can enter into the gap between the pocket hole 2 of steel ball and retainer from angle 3, improve the mobility of its grease, reduce viscous resistance, extend bearing working life.

Claims

1. high-speed precision bearing retainer, comprise whole main body (1) in the form of a ring, along the circumferencial direction of main body (1), be evenly equipped with a plurality ofly be used to holding the pocket hole (2) of steel ball, it is characterized in that: the madial wall (11) of described main body (1) forms a plurality of angles (3) with guiding grease with inwall (21) intersection in pocket hole (2).

2. a kind of high-speed precision bearing retainer according to claim 1, it is characterized in that: the madial wall (11) of described main body (1) forms four angles (3) with inwall (21) intersection in pocket hole (2), and four angles (3) are uniformly distributed centered by the longitudinal center line of pocket hole (2).

3. a kind of high-speed precision bearing retainer according to claim 1 is characterized in that: described main body (1) is resin material.

4. a kind of high-speed precision bearing retainer according to claim 1, it is characterized in that: described angle (3) is the breach of arc surfaced for bottom surface.