CN203477083U

CN203477083U - Turntable bearing

Info

Publication number: CN203477083U
Application number: CN201320522194.2U
Authority: CN
Inventors: 周凯; 关向可; 张延娜
Original assignee: LUOYANG NEW ENERGY BEARING MANUFACTURING Co Ltd
Current assignee: LUOYANG NEW ENERGY BEARING MANUFACTURING Co Ltd
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2014-03-12
Anticipated expiration: 2023-08-26

Abstract

The utility model relates to a turntable bearing which comprises an outer bearing ring, an inner bearing ring, steel balls I and steel balls II. The turntable bearing is characterized in that the inner bearing ring is of a split structure and is formed by an inner ring I and an inner ring II which are both provided with axial rolling paths; the outer bearing ring is provided with an axial rolling path I and an axial rolling path II which are respectively corresponding to the axial rolling paths of the inner ring I and the inner ring II; the steel balls I are mounted on a rolling path I formed by the axial rolling path I on the outer bearing ring and the axial rolling path of the inner ring I; the steel balls II are mounted on a rolling path II formed by the axial rolling path II on the outer bearing ring and the axial rolling path of the inner ring II; the diameter of each steel ball I is different from that of each steel ball II; a contact angle of each of the axial rolling path of the inner ring I and the axial rolling path of the inner ring II and each of the axial rolling paths I and II of the outer bearing ring is 60 DEG C; a separation distance between the rolling path I and the rolling path II is 48.78+/-0.1mm.

Description

A kind of turntable bearing

Technical field

^?the utility model belongs to technical field of bearings, is specifically related to a kind of turntable bearing.

Background technique

Bearing is the supporting member in mechanical transmission mechanism, and for determining the relative movement position of running shaft and other part, its bearing capacity directly affects the service behaviour of mechanical complete machine, drives the motion of other parts by the running of bearing.Bearing is in the situation that guaranteeing that load-carrying properties meet usage requirement, more need convenient for assembly, require steel ball and spacing block can directly enter upper and lower raceway, and according to suffered different axial force, radial force and tilting moment, require the specific wrapping angle steel ball different from upper and lower diameter, this has higher requirement to double row reducing ball bearing.

Model utility content

In order to overcome above-mentioned technical problem, the purpose of this utility model is to propose a kind of turntable bearing.

To achieve these goals, the utility model adopts following technological scheme:

A turntable bearing, described bearing includes bearing outer ring, bearing inner race, steel ball I and steel ball II; It is characterized in that: described bearing inner race is split-type structural, by inner ring I and inner ring II, formed; Described inner ring I and inner ring II all have axial raceway; Described bearing outer ring has two axial raceways, and axial raceway I, axial raceway II that axially raceway I, axially raceway II, and bearing outer ring have are corresponding with the axial raceway of inner ring I and inner ring II respectively; The raceway I that the axial raceway of the axial raceway I on described bearing outer ring and inner ring I forms is provided with steel ball I, the raceway II that the axial raceway of the axial raceway II on bearing outer ring and inner ring II forms is provided with steel ball II, and described steel ball I is different with the diameter of steel ball II; The wrapping angle of the axial raceway I of the axial raceway of described inner ring I, the axial raceway of inner ring II and bearing outer ring, axial raceway II is 60 °, and the spacing of raceway I and raceway II is 48.78 ± 0.1mm.

The diameter of described steel ball I is 30.1625mm.

The diameter of described steel ball II is 25.4mm.

The curvature R of described raceway I is 15.53mm.

The curvature R of described raceway II is 13.08mm.

A kind of turntable bearing the utility model proposes, bearing inner race is split-type structural, the wrapping angle of the axial raceway I of the axial raceway of described inner ring I, the axial raceway of inner ring II and bearing outer ring, axial raceway II is 60 °, and the steel ball of two kinds of different-diameters and raceway can bear different axial forces, radial force and tilting moment; Meet the load-carrying properties of bearing, more meet the usage requirement of turntable bearing.

Accompanying drawing explanation

Fig. 1 is schematic cross-section of the present utility model.

^?fig. 2 is the structural representation of raceway in the utility model.

In figure: 1, bearing outer ring, 2, steel ball I, 3, steel ball II, 4, inner ring I, 5, inner ring II.

Embodiment

With instantiation, the utility model is illustrated by reference to the accompanying drawings :

As shown in Figure 1, a kind of turntable bearing, described bearing includes bearing outer ring 1, bearing inner race, steel ball I 2 and steel ball II 3; Described bearing inner race is split-type structural, inner ring I 4 and inner ring II 5, consists of; Described inner ring I 4 and inner ring II 5 all have axial raceway; Described bearing outer ring 1 has two axial raceways, and axial raceway I, axial raceway II that axially raceway I, axially raceway II, and bearing outer ring 1 have are corresponding with the axial raceway of inner ring I 4 and inner ring II 5 respectively; The raceway I that the axial raceway of the axial raceway I on described bearing outer ring 1 and inner ring I 4 forms is provided with steel ball I 2, the raceway II that the axial raceway of the axial raceway II on bearing outer ring 1 and inner ring II 5 forms is provided with steel ball II 3, and described steel ball I 2 is different with the diameter of steel ball II 3; In conjunction with Fig. 2, the wrapping angle of the axial raceway I of the axial raceway of described inner ring I 4, the axial raceway of inner ring II 5 and bearing outer ring 1, axial raceway II is 60 °, and the spacing of raceway I and raceway II is 48.78 ± 0.1mm, the diameter of described steel ball I 2 is 30.1625mm, the diameter of described steel ball II 3 is 25.4mm, the curvature R of described raceway I is 15.53mm, and the curvature R of described raceway II is 13.08mm.Integral body forms a kind of have two raceways, the bearing of the structure of two kinds of steel balls.

Claims

1. a turntable bearing, described bearing includes bearing outer ring (1), bearing inner race, steel ball I (2) and steel ball II (3); It is characterized in that: described bearing inner race split-type structural, consists of inner ring I (4) and inner ring II (5); Described inner ring I (4) and inner ring II (5) all have axial raceway; Described bearing outer ring (1) has two axial raceways, and axial raceway I, axial raceway II that axially raceway I, axially raceway II, and bearing outer ring (1) have are corresponding with the axial raceway of inner ring I and inner ring II (5) respectively; The raceway I that the axial raceway of the axial raceway I on described bearing outer ring (1) and inner ring I (4) forms is provided with steel ball I (2), the raceway II that the axial raceway of the axial raceway II on bearing outer ring (1) and inner ring II (5) forms is provided with steel ball II, and described steel ball I (2) is different with the diameter of steel ball II (3); The wrapping angle of the axial raceway I of the axial raceway of the axial raceway of described inner ring I (4), inner ring II (5) and bearing outer ring (1), axial raceway II is 60 °, and the spacing of raceway I and raceway II is 48.78 ± 0.1mm.

2. turntable bearing according to claim 1, is characterized in that: the diameter of described steel ball I (2) is 30.1625mm.

3. turntable bearing according to claim 1, is characterized in that: the diameter of described steel ball II (3) is 25.4mm.

4. turntable bearing according to claim 1, is characterized in that: the curvature R of described raceway I is 15.53mm.

5. turntable bearing according to claim 1, is characterized in that: the curvature R of described raceway II is 13.08mm.