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Bearing systems, motor assembly and method of assembling bearing system of motor

A motor and bearing technology, applied in the direction of rotating bearings, rigid brackets of bearing components, bearing components, etc., can solve problems such as shortening lifespan

Inactive Publication Date: 2003-05-07
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, minimizing friction and stiction as much as possible is desirable due to minimal axial preload reducing bearing noise and excessive forces leading to shortened life

Method used

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  • Bearing systems, motor assembly and method of assembling bearing system of motor
  • Bearing systems, motor assembly and method of assembling bearing system of motor
  • Bearing systems, motor assembly and method of assembling bearing system of motor

Examples

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Embodiment Construction

[0026] FIG. 1 is a schematic diagram illustrating a preload force P applied to a bearing system 100 . The bearing system 100 includes a preloaded spring end 102 and an opposed preloaded end 104 . The preloaded spring end 102 includes a first bearing 106 that includes an outer ring 108 , an inner ring 110 , and at least one ball 112 . The opposing preload end 104 includes a second bearing 114 including an outer ring 116 , an inner ring 118 , and at least one ball 122 . Shaft 124 extends through and is rotatably supported by bearing system 100 . Shaft 124 is connected to a motor (not shown). The friction force F acts against the preload force P and the magnetic force M acts together with the friction force F.

[0027] The bearing load at the preload spring end 102 is equal to the preload force P minus the friction force F. The preload force P at the preload spring end 102 is equal to the preload spring force. The frictional force F at the preload spring end 102 is equal to ...

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Abstract

A bearing system includes a housing with first and second relief cuts, and a bearing assembly that includes an inner race and an outer race. An adjust screw contacts a preload spring positioned adjacent the outer race. The preload spring exerts a force on the outer race. The outer race includes a first and second edge, and a connecting portion. The first and second edges are positioned adjacent the first and second relief cuts respectively. The connecting portion contacts a bearing bore surface while the first and second edges of the outer race do not contact the bore surface.

Description

technical field [0001] This invention relates generally to bearing systems and, more particularly, to apparatus and methods for providing axial preload to bearing systems. Background technique [0002] One of the factors affecting bearing noise is the relative internal clearance within the bearing. The internal clearance of deep groove ball bearings is typically expressed as the radial clearance between the inner raceway, the balls and the outer raceway. Reducing the internal clearance improves the contact between the balls and the raceway. Reducing internal clearances also reduces the allowable temperature range for good operation. Desiring equipment to operate over a wide temperature range necessitates an increase in the internal clearance of the bearing as compared to equipment operating over a relatively small temperature range. [0003] For bearings with large diameters and operating at high speeds, large internal clearances often lead to increased noise and heat gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C25/08F16C35/067F16C35/077
CPCF16C35/067F16C35/077F16C25/08F16C19/06F16C19/54F16C25/06F16C25/083F16C2380/26
Inventor J·R·克罗维尔
Owner GENERAL ELECTRIC CO