SigmaDrive Thrust Drive

For installations where an additional thrust bearing is required, the SigmaDrive STS system is an ideal choice.  The system incorporates a thrust bearing to isolate the propellers thrust to the engine. It uses a combination of three SD units built together. Two of which are incorporated in the thrust bearing and another coupled to the transmission with an intermediate shaft.

Bruntons SigmadriveLike the standard installation the couplings are available for shaft torques of 185 ft-lbs to 4425 ft-lbs with a range of diameters and flange options.

The STS thrust coupling has excellent anti-noise and vibration abilities and also ensures that seals and bearings are always perfectly aligned, reducing wear and ensuring a longer trouble free life for all associated components.

Sigmadrive thrust

The Bruntons Sigmadrive STS system incorporates a thrust bearing to isolate the propellers thrust to the engine. It uses a combination of three SD SigmaDrive units built together. Two of which are incorporated in the thrust bearing and another coupled to the transmission with an intermediate shaft.

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 ensuring a longer trouble free life for all associated components.

The coupling is manufactured from a special bronze alloy that makes it a premium product that is maintenance free. The internal component is hard-wearing with a long service life. No rubber is used in the construction of the SigmaDrive and its unique design compensates for the movement of the engine when under load form the propeller shaft.

Models available: STS 550, STS 1000, STS1500 STS 2500, STS 3000

Sigmadrive thrust coupling