Floating dock

Well suited to harsh environments

marine cargo ship

In harsh wet conditions, PolyLube's corrosion resistance provides a strong advantage over conventional bearings.

PolyLube has been successfully used in continuous saltwater immersion, and shows high moisture resistance.


  • Stern Tube
  • Rudder Bearing
  • Docks/Boat Lifts
  • Cranes
  • Sailboats
  • Winches
  • Container lifting

Case Study – Docks and Other Adjustable Walkways

A rising tide lifts all boats. It also needs to lift your gangplank too. Salt air leads to accelerated corrosion. No matter why the walkway seized, structural damage from this type of failure is costly in time and materials.

Injection molded bearings seem to be a reasonable solution, but wave action and bore contamination can lead to increased wear from dithering action, aside from loading issues.

Solution – Composite Bearings

Polygon's composite bearings provide the load capacity and corrosion resistance needed for this simple yet critical application.

Sample Applications

ships marine


Any ratings are typical for design purposes. Your design parameters may affect final ratings. Consult with a Polygon sales engineer for guidance. Final testing and approval is the customer's responsibility for their application. This information is derived from our testing and published data. There is no assurance of these properties, or warranty provided that these products are suitable for any particular purpose or operational situation.

Polygon certifies that their product will be free from material defect. Polygon will not accept any liability for loss, damages, or costs from use or misuse of our products.

Specifications are subject to change, and may be affected by our continual process of improvement. Changes may be made without prior announcement.