Machinedesign 20928 Polygon Bearings Bushings

Composite Bearings for Construction, Mining, and Agriculture

July 24, 2019
PolyLube high-performance custom-engineered and standard composite plain bearings

PolyLube high-performance custom-engineered and standard composite plain bearings (bushings) from the Polygon Co. are, ideal for applications in construction and mining equipment such as wheel loaders, excavators, back hoes, and compact track loaders, as well as other applications requiring pivot joints with long life expectancies. They have high load-bearing capacities, low friction, and they resist corrosion. The composite material is self-lubricated, so the bearings do not require greasing. This reduces maintenance costs and can lower the number of greasing locations, ultimately resulting in fewer equipment warrantee claims. Polygon composite bearings are also an excellent choice for high-cycle agricultural equipment, including implements, foraging and harvesting equipment, applicators, carts, and spreaders. The greaseless bearings help maintain cleanliness inside warehouses, avoiding potential contamination of the work area by pallet lifting equipment. The bearings are made of continuous filament-wound glass fibers, polymer resins, and polytetrafluoroethylene fabric liners. The fiberglass filament and epoxy resin form a high strength backing. This precise filament-wound fiberglass structure allows for thin-walled, lightweight bearings. The bearings are typically retained through an outside-diameter interference fit.

Polygon Co., 1-800-918-9261,

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