Rudder bearings are exposed to some of the toughest conditions anywhere on a vessel.

Constant load, movement, saltwater and tight access all play a role in how long a bearing lasts and how often it needs attention.

For years, bronze has been the default choice. It’s familiar, strong and proven but it also comes with limitations: corrosion, lubrication requirements and heavier handling during installation.

As operators push for lower maintenance and better reliability, non-metallic rudder bearings are fast becoming the smarter alternative.

Why Non-Metallic Rudder Bearings Work Better in Marine Environments

Modern composite bearings remove many of the problems that come with metal:

  • No corrosion – Saltwater has no effect on composite materials, so the bearing maintains its integrity throughout its service life. There’s no pitting, no seizing and no risk of corrosion-related failure.

  • Self-lubricating performance – Many non-metallic rudder bearings are engineered with solid lubricants. This removes the need for grease systems entirely and helps maintain consistent performance even in low-speed, oscillating rudder movement.

  • Stable in wet conditions – Quality composites take on minimal water, meaning little to no dimensional change when submerged. This is critical for maintaining rudder alignment and smooth steering.

  • Lighter and easier to install – Compared to bronze, composites are far lighter. Shipyards can handle and fit them without lifting gear in many cases which cuts downtime and improves safety on site.

Where Non-Metallic Rudder Bearings Are Used

Composite bearings are widely approved and commonly used in rudder stocks, pintle bearings, steering gear components and stern tube applications (depending on design).

In critical areas such as rudders, where access is limited and reliability matters, the reduced maintenance demand of non-metallic rudder bearings makes a noticeable difference to vessel uptime.

Non-metallic rudder bearings provide longer life, lower maintenance and more predictable performance at sea.

If you’re planning a refit, specifying a new vessel or considering a material upgrade, composite bearings are a straightforward way to reduce future headaches.

Looking to Move Away from Bronze? A Proven Composite Alternative

Tufcot® T100 Marine is a non-metallic rudder bearing material designed specifically for marine and offshore use. It offers:

  • Fully self-lubricating operation
  • Excellent wear resistance under load
  • No corrosion and no grease requirements
  • Minimal water absorption
  • Smooth running and long service life

Tufcot® T100 Marine is also approved by leading classification societies including Lloyds, DNV, Bureau Veritas, ABS and RINA.

Tufcot is Lloyds Approved
Tufcot has DNV type approved product

These approvals streamline acceptance during survey and give operators confidence that the material meets recognised industry standards.

Read More About Tufcot® T100 Marine
Contact The Tufcot Team