Method for manufacturing rolling bearing lubricated by maintaining lubricating oil through UHMWPE (Ultra High Molecular Weight Polyethylene) and rolling bearing

Abstract

The invention relates to a method for manufacturing a rolling bearing lubricated by maintaining lubricating oil through UHMWPE (Ultra High Molecular Weight Polyethylene) and a rolling bearing. Compared with the traditional grease lubricating bearing, the lubricating oil having the lubricating effect is not maintained by a thickening agent but maintained by a UHMWPE microporous solid. A semifluid-shaped mixer which at least contains UHMWPE and lubricating oil is injected into an inner cavity of the rolling bearing at normal temperature; the bearing is heated at the temperature above a gel point of the UHMWPE, and the UHMWPE is just converted into a microporous oil-contained solid for being adhered with a maintainer; and a plurality of UHMWPE microporous oil-contained solid lubrication rolling bodies can be also manufactured for being assembled into the bearing together with a bearing roll body. When the bearing rotates, the lubricating oil flows over UHMWPE solid micropores to realize lubrication on the working surface of the bearing. Compared with a grease lubricating bearing with lubricating oil maintained by the thickening agent, the invention overcomes the defects of smaller storage amount of the lubricating oil of the inner cavity of the grease lubricating bearing, easiness of leakage under the working condition of vibrating impact, low-temperature hardening, unavailable lifelong lubrication, and the like.

Description

technical field [0001] The invention relates to the technical field of special rolling bearings, in particular to a method for manufacturing a rolling bearing in which lubrication oil is kept and lubricated by ultra-high molecular weight polyethylene (UHMWPE) and the rolling bearing. Background technique [0002] At present, more and more rolling bearings use grease as lubricant, and almost all sealed bearings use grease. Grease is a colloid composed of base oil (lubrication oil), thickener (soap) and additives (additives), and accounts for 80-85%, 10-15% and 5-10% of the total weight of grease, of which The base oil is retained by the thickener and released when the rolling bearing is running to perform the lubrication function. [0003] Rolling bearings using grease as lubricant have the following deficiencies or defects: [0004] (1) Under vibration and impact conditions, grease is easy to leak from the bearing. Once leaked, it will not only affect the lubrication perfo...

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Problems solved by technology

[0008] The first object of the present invention is to provide a method for making a rolling bearing lubricated by UHMWPE lubricating oil, so as to solve the problem of limited filling amount of lubricating oil in the inner cavity of the bearing kept by the thickener in the existing grease lubricated bearings. Defects such as easy leakage, thickening and hardening at low temperature, and difficulty in lifetime lubrication

[0009] The second object of the present invention is to provide a rolling bearing lubricated by UHMWPE lubricating oil, so as to solve the problems of grease leakage, vibration shock resistance, low temperature resistance, Defects that require refilling, premature bearing failure due to poor lubrication, etc.

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