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How can CSB filament-wound bearings operate at high loads with no lubrication?
Release Date:2015-06-20    Total Hits:1963bout

CSB-CRB series of materials feature a load-bearing layer consisting of high-temperature epoxy resin reinforced with high-strength glass fibers. In addition, a sliding layer consisting of special fibers and PTFE fibers give the bearings superior abrasion resistance and an extremely low coefficient of friction when operating at low speeds and high load. These are China's first no-oiling sliding bearings and can maintain excellent self-lubricating characteristics and very high bearing to pressure ratio under dry friction conditions.We have developed many self-lubricating materials suitable for different operating conditions, and use these materials in our CSB-CRM general-purpose filament-wound bearings, CSB-CRB standard filament-wound bearings, CSB-CRG high-load filament-wound bearings, CSB-CRW water-immersion filament-wound bearings, CSB-CRP high speed filament-wound bearings, and CSB-CRF economy-type filament-wound bearings. These self-lubricating bearings offer high performance and lifelong maintenance-free operation.

Of these types, CRM, CRB, and CRG filament-wound bearings are classified by CSB as "oiling prohibited" bearings. While many test results indicated that several types of filament-wound bearings readily form a hard lubricant layer under dry friction conditions, CSB's laboratory also found that lubrication with oil or grease caused intermittent breaks in the initial lubricating film. At that time, the bearing undergoes wear, which repairs the imperfect lubricating film. As a result, the wear resistance of filament-wound bearings under dry friction conditions is superior to that of filament-wound bearings lubricated with oil or grease.


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