Technical Downloads, Product Videos, Enquiry Form

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Bell Marine - Technical Downloads

Bruntons Autoprop

Autoprop's unique design and superb build quality make it the first choice feathering propeller among cruising yachtsmen the world over, with drag reduction when sailing by at least 85%, and a unique ability to change pitch automatically to suit prevailing wind and sea conditions when motoring or motor sailing.

Download the Autoprop brochure by clicking on the image to the left.








Bruntons Varifold

From 10hp to 1000hp there is a Varifold propeller for your yacht, whether it is a small cruiser racer that does more cruising than racing, or an out an out racer that just needs a propeller to get back into port.

Our two, three and four blade versions are designed to produce excellent thrust when motoring with exceptionally low noise and vibration levels, and when folded for sailing, to reduce drag to a minimum.

Many well-known yacht manufacturer’s now fit Varifold as standard and the list of yachts re-propped with a Varifold to solve existing problems grows longer.

Download the Varifold brochure by clicking on the image to the left.





SPW Variprop

Variprop is a superb precision German engineered custom made feathering propeller.

Forward and reverse pitches can be changed in just seconds — even underwater

When the engine is turned off, the waterflow rotates the blades automatically into the feathered position.

VARIPROP will fit into the smaller prop apertures of older traditional “full keel“ yachts – not possible with most competing propellers

Download the Variprop brochure by clicking on the image to the left.






Bruntons SigmaDrive

Bruntons SigmaDrive is a new solution that is already an award winner and provides effective anti-noise and anti-vibration solutions of the highest order.

What makes SigmaDrives different is their ability to resist propeller thrust when installed as a standalone coupling, directly from the shaft to the output flange on the engine's transmission. It reduces and even eliminates vibrations that originate from an imperfect alignment between the propeller shaft and the engine, compensating for up to 3 degrees in all directions.

SigmaDrives fit virtually all boats from yachts to workboats, canal narrow boats to military vessels up to 1300hp. Together with its anti-noise and vibration abilities having a SigmaDrive on your vessel also ensures that seals and bearings are always perfectly aligned, reducing wear and guaranteeing a longer trouble-free life for all associated components.

Download the SigmaDrive brochure by clicking on the image to the left.




MMP Propellers

Bell Marine supply the extensive Michigan Marine Propulsion International range of advanced fixed propellers.

MMP Inboard propellers include the Michigan, Federal, HyTorq, GoldLine, PowerLine and CustomLine brands.

MMP also provide a comprehensive series of Outboard and SternDrive propellers which are built in Stainless Steel, Aluminium and Bronze. MMPbrands include Ballistic, Apollo, Vortex, Michigan Match, Ambush and DynaJet.

Download the MMP Propellers brochure by clicking on the image to the left.






PSS Shaft Seal

The PSS Shaft Seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the worlds most reputable boat builders. Certified by Bureau Veritas, ABS & Rina:

The PSS seal eliminates the maintenance, constant adjustment & cost associated with traditional packing type glands. The PSS Shaft Seal can be easily fitted and is available for shafts ranging from 3/4” (20mm) to 6” (150mm).

Download the PSS Shaft Seal brochure by clicking on the image to the left.






Bell Marine - Product Videos

Bruntons Autoprop

Bruntons SigmaDrive

SigmaDrive - independent test review



Bell Marine - Enquiry Data Form

Enquiry Data Form


Please complete our enquiry data form as far as possible.

But if you can't answer all the questions at this stage, don't be concerned, we will contact you to discuss how we can meet all your requirements.

Click on the image on the left to go to the form.

Any questions whatsoever? - please contact us at Bell Marine:

email:    phone: 07848 450779 or 02380 360137