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Crane Hot Line

Polygon Releases Range of PolyLube Composite Bearings

Polygon Company, a producer of composite tubing, bearings, and pneumatic cylinders, has released a line of PolyLube high-performance custom-engineered and standard composite plain bearings (bushings), ideal for challenging applications in construction and mining equipment.

Featuring high load-bearing capacity, low frictional values, and corrosion resistance, the Polygon composite bearings are self-lubricated, requiring no greasing. This reduces labor costs and increases the maintenance interval before it’s required on rental equipment. It can also lower the number of greasing locations, ultimately resulting in fewer equipment warranty claims

Polygon composite bearings are made of continuous filament-wound glass fibers, polymer resins, and polytetrafluoroethylene (PTFE) fabric liners. The fiberglass filament and epoxy resin combine to form a high strength backing. This precise filament-wound fiberglass structure allows for thin-walled, lightweight bearings, which are typically retained through outside diameter (OD) interference fit.

The field retrofittable Polygon bearings can replace existing metallic bushings without changing mating parts, so they can be used to improve wear material without requiring complete equipment redesign. Availability of small-batch/short-run drop-in replacements means customers can increase bushing OD and length without a large tooling investment.

Working closely to determine the right product for the application, Polygon engineers specify the proper bearing dimensions for the given available space, interference fit, clearance fit, and any limiting factors associated with retention, bearing OD/ID, axial stress, and hoop stress.

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