What materials are cutlass bearings available in?

Marine Control stocks cutlass bearings in three materials: brass, GRP (glass-reinforced plastic), and phenolic. Each material suits different vessel types and operating conditions. Their full Exalto range covers all three, and the team can advise which material is right for your shaft and usage.

Which brand of cutlass bearings does Marine Control supply?

They exclusively stock Exalto bearings, a UK manufacturer known for extremely strict quality control and ABS certification. Exalto is widely regarded as the most respected European manufacturer of cutlass bearings, giving you confidence in long-term reliability.

What shaft sizes are available?

Stock sizes range from 25mm all the way up to 5½-inch shaft diameters. Bearings come in fully metric (e.g. 80 × 100mm), fully imperial (e.g. 2″ × 3″), or mixed metric/imperial combinations (e.g. 80mm × 4 inch). Note that a measurement looking slightly unusual — like 76.2mm — is likely an imperial size in disguise (3 inches), so it’s worth double-checking before ordering.

How long do cutlass bearings typically last?

Cutlass bearings generally last between 3 and 5 years. It is recommended to check them every time the boat comes out of the water. A worn bearing allows the propeller shaft to move, which can cause vibration or overheating — waiting too long to replace them is a false economy.

Can Marine Control modify bearings to fit my vessel?

Yes. Marine Control has full machining capabilities in-house. They can reduce outside diameters, cut bearings to specific lengths, or add threads — usually completed the same day. They can also come to your boat to help measure and confirm the correct size before any work is done.

Do they supply bearings outside of Mallorca?

Yes. Marine Control supplies cutlass bearings across the wider Mediterranean region, including Turkey, Greece, Malta, Croatia, Israel, Egypt, and beyond. Their aim is same-day delivery for local customers, with fast dispatch for those further afield. Contact them at info@marine-control.com or +34 629 144 202 for a quote.

Custom Zinc & Aluminium Anodes for Boats, Yachts & Commercial Vessels

Precision Manufactured Custom Marine Anodes

Although Marine Control holds one of Europe’s largest stocks of zinc and aluminium sacrificial anodes, there are occasions when a standard anode is not the right solution. Whether you require a modified shaft anode, a replacement for an obsolete propeller anode, or a completely bespoke sacrificial anode, our experienced marine engineers can manufacture custom anodes to your exact specifications.

With years of experience producing custom zinc and aluminium anodes, we support superyachts, motor yachts, sailing yachts, commercial vessels, shipyards, management companies, and refit specialists worldwide.

From large 280mm propeller hub anodes and specialised cooling system pencil anodes to zinc bars for thruster tunnels, shaft anodes, and fully bespoke marine components, we can manufacture a wide range of solutions to meet your vessel’s specific requirements.

Because every custom anode is manufactured in-house, we provide:

Whether replacing an unavailable component or designing a completely new anode solution, Marine Control delivers dependable custom marine anodes built for long-term performance.

Streamlined Hydrodynamic Anodes

One of our most popular custom products is our streamlined hydrodynamic shaft anode, specifically designed for vessels where performance, efficiency, and reduced drag are important.

Unlike conventional shaft anodes, these anodes feature an advanced streamlined profile that allows water to flow around the shaft with significantly less resistance. This innovative design helps minimize turbulence and improves underwater efficiency without compromising corrosion protection.

Benefits of Streamlined Hydrodynamic Anodes

Reduced hydrodynamic drag
Improved fuel efficiency
Increased vessel speed potential
Reduced shaft turbulence
Enhanced cruising efficiency
Professional streamlined appearance

Our streamlined hydrodynamic shaft anodes can be up to four times more hydrodynamically efficient than many standard shaft anodes, helping reduce underwater resistance while supporting improved vessel performance.

Ideal for:

Extensive Stock Means Faster Manufacturing

Marine Control maintains an extensive stock of raw zinc and aluminium materials, allowing us to manufacture custom anodes with exceptionally short lead times.

We hold:

By keeping such a wide range of materials in stock, we can machine almost any custom design quickly while keeping material waste to an absolute minimum.

That means:

It’s good for the environment—and good for your pocket.

Many custom anodes can even be manufactured and dispatched the same day.

Precision CNC Manufacturing

Unlike many suppliers, Marine Control manufactures and modifies custom anodes entirely in-house.

Our workshop is equipped with CNC and conventional machine tools capable of producing highly accurate marine components.

We regularly manufacture:

Custom shaft anodes
Propeller hub anodes
Rope cutter compatible anodes
Bow thruster anodes
Stern thruster anodes
Hull anodes
Heat exchanger pencil anodes
Zinc bars
Aluminium bars
Custom flanges
Precision machined plugs
Special bolt patterns
Counterbored fixing holes
Large diameter propeller anodes

Working directly from drawings, CAD files, measurements or existing samples, we ensure every component fits perfectly.

Modifying Existing Standard Anodes

Sometimes a completely new anode isn’t required.

Our workshop can modify standard anodes by:

Increasing the internal diameter
Reducing the outside diameter
Adding new fixing holes
Machining counterbores
Face machining
Changing thickness
Creating custom recesses

This often provides a faster and more economical solution than manufacturing an entirely new component.

Manufactured for the Perfect Fit

Every finished anode is precision machined to ensure an accurate fit and maximum sacrificial protection.

Our custom products are trusted on:

Superyachts
Motor yachts
Sailing yachts
Fishing boats
Commercial vessels
Patrol boats
Catamarans
Workboats

Whether you’re replacing an obsolete anode or designing a completely new component, Marine Control can provide the solution.

Why Choose Marine Control?

Extensive stock of zinc and aluminium
Zinc rod from 10 mm to 300 mm diameter
Custom machining completed in-house
Same-day manufacturing available on many orders
Large 280 mm propeller anodes manufactured
One-off prototypes or production quantities
Precision CNC machining
Manufactured from drawings, CAD files or samples
Fast quotations and worldwide shipping

Gallery – Custom Marine Anodes

We have completed hundreds of custom anode projects for yachts and commercial vessels.

Our gallery showcases a wider range of completed work, including:

Streamlined hydrodynamic shaft anodes
Custom propeller hub anodes
CNC machining processes
Modified standard anodes
Custom machined end caps and plugs
Bar anodes
Thruster tunnel anodes
Precision flanges
Installed propeller anodes
Bespoke marine engineering projects

Need a Custom Anode?

Simply send us:

Your existing anode
A technical drawing
CAD file
Sketch with dimensions
Photos with measurements
Boat make and model
Propeller shaft dimensions

Our engineers will recommend the best solution and provide a fast quotation with manufacturing lead time.

Frequently Asked Questions

1. Can you manufacture an anode from my existing sample?

Yes. We can accurately reproduce an existing anode from a sample, drawing, CAD file or measurements, even if the original manufacturer no longer produces it.

2. What materials are available?

We manufacture custom sacrificial anodes in zinc and aluminium, depending on your vessel and operating environment.

3. What are streamlined hydrodynamic anodes?

These specially shaped shaft anodes reduce water resistance compared with traditional designs. Their streamlined profile helps improve fuel efficiency and vessel performance, offering up to four times better hydrodynamic performance than standard anodes.

4. Can you modify a standard anode instead of making a new one?

Yes. We regularly enlarge internal diameters, reduce outside diameters, machine counterbores, add bolt holes and carry out many other custom modifications, often saving both time and cost.

5. How quickly can you manufacture a custom anode?

Because we maintain extensive stocks of zinc and aluminium bar and rod materials, many custom anodes can be manufactured and dispatched the same day, depending on complexity.