Spherical shield for bearing

Abstract

The invention discloses a spherical shield for a bearing. The spherical shield comprises an inner bushing and a bearing sheath, wherein a bearing shield is arranged between the inner bushing and the bearing sheath; steel balls are arranged inside the bearing shield; a positioning ring is arranged on the bearing shield; a lubricating device is arranged at the side edge of the positioning ring; theinner bushing is composed of an inner wall, a positioning groove and a mounting and nesting groove; and the positioning groove and the mounting and nesting groove are formed in the surface of the inner wall. The spherical shield disclosed by the invention has the beneficial effects that no friction exists among the balls, and the grease retentivity is improved, thereby realizing long service lifeand long-term operation without maintenance or lubrication; no collision exists among the balls, thereby realizing low noise and good tone quality; no friction exists among the balls, thereby realizing excellent properties of low heat productivity and high-speed operation; the balls which are uniformly arranged at intervals form a cycle, thereby ensuring smooth rotation of the balls; and no friction exists among the balls, thereby improving the grease retentivity and reducing the generation of dust.

Description

Technical field [0001] The present invention relates to the field of bearing equipment. The present invention relates to a spherical protector for bearings. Background technique [0002] Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy (accuracy). [0003] In the 17th century, Galileo made the earliest description of the "cage ball" ball bearing. At the end of the seventeenth century, British C. Wallo designed and manufactured ball bearings, and installed them on mail trucks for trial use, and British P. Worth obtained a patent for ball bearings. The first rolling bearing with cage to be put into practical use was invented by watchmaker John Harrison in 1760 to make H3 chronograph. At the end of the eighteenth century, German H.R. Hertz published a paper on the contact stress of ball bearings. On the basis of Hertz'...

AI Technical Summary

Problems solved by technology

The friction coefficient between the ball bracket and the ball of the existing bearing is large, and maintenance (requires lubrication) is often required. Due to the structural characteristics of this bearing, the radial clearance is relatively large, resulting in large vibration and noise, and high cost. There is still room for improvement in its overall structural design

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