Marine Composite and Seals

Composite from O Rings Limited

Download our Marine Composite brochure here Marine-Brochure

Why do our customers use composite to replace traditional steel or bronze bearings?

No maintenance Composite has excellent wear resistance. Sea water and most fluids can be used as a lubricant with the benefit of no harmful toxic materials. It has no swell in water giving it exceptional dimensional stability, even in wet conditions

• 1/6 Weight of Steel and High Strength/Weight Ratio
• Natural Low Coefficient of Friction
• No Harmful Toxic Materials
• Can Be Chemical, Radiation & Corrosion Resistant

Just some of the Applications for our composite

• Rudder bearings
• Water-lubricated propeller shaft bearings
• Stabilizer bearings
• Steering and diving system bearings
• Steering gear bearings
• Stern roller bearings
• slipway pads
• Door bushes
• crane mast bearings
• Deck machinery bearings
• High-strength synthetic rope termination bushings
• Offshore mooring system bearings

Trelleborg’s Orkot® is the world’s leading brand in composite bearing material for wear resistant bearings under high load. With over 60 years’ experience in composite bearings, the Rotherham facility provides a full service, from engineering concept to delivery of a bearing solution for specialist markets such as marine, hydro & tidal power.

Strengths

• Providing engineered solutions for specialist applications in Marine, Hydro and Tidal Power
• Finite Element Analysis capability
• High quality and reliable robotic manufacture of composite bearings
• In-house laboratory for full regulatory testing and approvals
• Work in partnership with customers to develop innovative solutions in new applications
• Manufacturing capability of bearings up to Ø30m

Marine Bearings are manufactured from a unique synthetic composite incorporating solid lubricants to ensure outstanding wear life. With virtually no swelling in seawater and a very low thermal coefficient of expansion, the bearings provide dimensional stability in arctic and tropical seas. In addition, they do not corrode or promote corrosion of the housing and shaft and tolerate both edge loading and misalignment.

It is capable of withstanding high side loads, damping vibrations and embedded foreign particles. Higher static loads are permissible.

Special materials are available with operating temperatures up to +250 °C / +482 °F. APPLICATIONS: hydraulics, general purpose, standard cylinders, mobile hydraulics

Material grades

Orkot® TLMM Marine
This standard material incorporates a woven fabric reinforcement and solid lubricants within a thermosetting resin matrix. It can be used in conjunction with water and grease lubrication, running dry for limited periods.

Orkot® TXMM Marine
A further development of Orkot® TLM Marine, Orkot® TXMM Marine utilizes a specialized bearing surface to extend its dry running capabilities, reducing friction and wear rates. The material can also be used with grease and water lubrication.

We are also able to offer O Rings Ltd, UK manufactured composite marine bearings on request.