Four-point contact ball bearing

A four-point contact, ball bearing technology, applied in the direction of ball bearings, shafts and bearings, bearing components, etc., can solve the problems of affecting the normal use of bearings, reducing bearing accuracy, increasing the difficulty of assembly, etc., to improve friction and wear and development. Heat, reduce wear and heat, improve the effect of assembly accuracy

Active Publication Date: 2011-11-16
CHANGZHOU NRB CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current four-point contact ball bearing includes an outer ring, two split inner rings, rolling elements and a cage. The cage is evenly distributed with pockets along the circumference, and each rolling element is respectively installed on the cage and arranged on the outer ring frame and the cage. Between the two inner rings, the cage plays the role of isolating the rolling elements at equal distances and preventing the rolling elements from falling, guiding and driving the rolling elements to rotate. The contact angle of the bearing is 35-45°. Since the size of the four-point contact ball bearing is mostly It is more than 150mm, so the outer ring, inner ring and cage are made of metal, especially the cage is made of copper alloy material, and the cage uses an inner lock. When the lock of the cage is too large, the rolling elements cannot enter In the pocket of the cage, and the lock of the cage is small, it will cause the rolling element to break away from the pocket
But at present, one kind of cage is to make the pocket hole into a cylindrical hole, install the rolling element in the pocket hole and then limit the rolling element through the riveting process. The pocket hole is partially deformed by the riveting process to form a lock, but The riveting process is not easy to ensure that the position of each lock is the same, and it is easy to cause different locks, which will reduce the precision of the bearing. Under the condition of high-speed opera

Method used

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Examples

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Example Embodiment

[0019] See Figures 1 to 7 As shown, the four-point contact ball bearing of the present invention includes an outer ring 1, two separate inner rings 4, rolling elements 2 and a cage 3. The cage 3 is evenly distributed with pockets 31 along the circumferential direction, as shown in the figure. figure 1 As shown, 12 pockets 31 can be used, and each rolling element 2 is installed in each pocket 31 and arranged between the outer ring 1 and the two inner rings 4, so that the inner ring 4, the outer ring 1 and the rolling elements 2 are installed. The cages 3 are combined to form a bearing. The contact angle d of the four-point contact ball bearing can be 30°, or the contact angle is 35°, or the contact angle is 40° or the contact angle is 45°. Each pocket 31 on the cage 3 The inner side is provided with a lock, and the installation center size of the rolling element 2 is φ1. The aperture size of the lock is smaller than the diameter of the rolling element 2 by 0.015 to 0.05 mm. S...

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Abstract

The invention relates to a four-point contact ball bearing which comprises an outer ring, two separated inner rings, rolling bodies and a retainer, wherein pockets are uniformly distributed along the circumference of the retainer; the rolling bodies are respectively installed in pockets and arranged between the outer ring and the two inner rings; a fore shaft is formed at the inner side of each pocket on the retainer; each fore shaft comprises two arc-shaped merrowes which symmetrically expand to the central axis of the corresponding pocket; the total arc length of the two arc-shaped merrowesis two fifth or one third of the line contact arc length of the rolling bodies; and the arc-shaped merrowes and the hole walls of the pockets are in inclined plane transition. By the adoption of the invention, the assembly process can be simplified; the assembly efficiency and accuracy of the bearing are improved; the frictional resistance when the bearing operates is reduced; and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to a four-point contact ball bearing, belonging to the technical field of bearings. Background technique [0002] The four-point contact ball bearing is a radial single-row angular contact ball bearing. The raceway is used to support the axial load acting in two directions. Compared with the double-row bearing, the occupied axial space will be significantly reduced. Small, it bears a large radial load and axial load at a high speed, so four-point contact ball bearings are mostly used in engines. The current four-point contact ball bearing includes an outer ring, two split inner rings, rolling elements and a cage. The cage is evenly distributed with pockets along the circumference, and each rolling element is respectively installed on the cage and arranged on the outer ring frame and the cage. Between the two inner rings, the cage plays the role of isolating the rolling elements at equal distances and preventing the rolling elemen...

Claims

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Application Information

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IPC IPC(8): F16C19/16F16C33/38
Inventor 吴朝阳张松黄淑英
Owner CHANGZHOU NRB CORP
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