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ACM Bearings

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ACM Bearings

World-leading Manufacturing

ACM Composite Bearings have been developing and manufacturing highly engineered synthetic composite materials for marine and industrial engineering markets worldwide for over 25 years.

Composite bearings

ACM Composite Bearings is a world-leading manufacturer and supplier of self-lubricating resin-bonded composite materials and non-metallic bearings to a broad cross-section of industries.

For almost thirty years, ACM has developed, manufactured, supplied and supported the application of composite materials into numerous worldwide markets. Advanced Composite Material (ACM) Bearings Limited was formed in 1988 by composite managers with over twenty years’ experience.

ACM composite materials are used within the marinehydropowerhydraulicrailoffshoreconstruction and industrial markets and are explicitly designed to replace traditional metal-based bearings; resulting in longer life and other technical advantages.

The ACM production facility is ISO 9001:2008 approved, and the materials are qualified to many classification society standards.

Over the past ten years, the company has significantly expanded production operations and now supply into over fifty countries worldwide and are rapidly becoming the number one choice for composite bearing solutions.


  • Rudder bearings
  • Rudder carrier bush & disk
  • Water lubricated propeller shaft bearings
  • Deck equipment
  • Offshore moorings
  • Stern rollers
  • Retractable thrusters


ACM Composite Bearings has extensive experience supplying bearings for the marine industry in a wide range of applications both above and below the water line. These include rudder bearings and steering gear, water lubricated propeller shaft bearings, bearings for anchor handling systems, crane bearings, life boat systems, winches, stern roller bearings, offshore moorings and so on.

ACM L2 Marine is our primary marine grade and is a high load composite bearing material that has been specifically formulated for marine environment applications. It comprises synthetic fabric reinforcement impregnated with a thermosetting resin and solid lubricant fillers.

L2 Marine is the only composite material approved to operate as a rudder bearing in wet and dry conditions at bearing pressures up to 10 MPa. Class approvals are held from many of the world’s foremost classification societies.

ACM L2 Marine has been tested and approved for stern tube bearing applications and has been proven to offer superior performance in terms of wear, extended life and low shaft wear over other water lubricated propeller shaft bearing materials. It is for these reasons that many navies use ACM material for their stern shaft bearings.