Bearing retainer material and preparation method thereof

A bearing cage and polyimide technology, applied in the field of materials, can solve the problems of large abrasion effect of metal on friction surface, large deformation of cage size, large friction torque, etc., and achieve good thermal conductivity and compression creep resistance. performance, excellent friction and wear resistance, and high reliability
CN101696311AActive Publication Date: 2010-04-21LUOYANG BEARING RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LUOYANG BEARING RES INST CO LTD
Publication Date
2010-04-21

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Abstract

The invention discloses a bearing retainer material and a preparation method thereof. The material is prepared from the following raw materials in percentage by weight: 2 to 5 percent of molybdenium disulfide, 8 to 12 percent of polyimide, 9 to 15 percent of polybenzoate, the balance of polytetrafluoroethylene. The preparation method comprises the following steps of: weighting the raw materials; mixing the raw materials; grinding the mixture; loading the mixture into a mould; pressurizing to prepare a blank; sintering the blank; and processing the blank into a finished product. The retainer material has the advantages of high temperature resistance, low temperature resistance, dimension stability, small erosion to metal and rubbed surfaces and good abrasion resistance. A retainer made of the bearing retainer material can be used under harsh conditions of no magnetism, ambient temperature changed between -19 and +55 DEG C, and rotation speed up to 7,200r / min so as to improve the performance of bearings.
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Description

technical field

[0001] The invention belongs to the technical field of materials, and in particular relates to a bearing cage material and a preparation method thereof. Background technique

[0002] The rotor bearing cage has been widely used in motors with magnetism and small temperature difference range, but there is no rotor bearing cage suitable for use on motors with no magnetism, large ambient temperature changes and high speed for up to 100 hours. shelf. At present, under the condition of ultra-low temperature liquid nitrogen (-196°C), glass fiber reinforced polytetrafluoroethylene composite material is usually used as bearing cage material, but the cage made of this material alternates between high and low temperature (-196°C ~ +55°C). , non-magnetic and high speed (7200r / min) working conditions, there are bearing noise, large friction torque, short stop time, large amount of wear, large cage size deformation and friction to metal Due to the large abrasive effect o...

Claims

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