Description

Longer propeller shafts require more bearing support.  Our intermediate shaft bearings help bridge the gap when a traditional bronze stern bearing and forward shaft bearing are not enough.

While shaft diameter is important to ensure the propeller is strong enough to avoid breaking or becoming permanently bent, shaft bearing is important to prevent excessive vibration and shaft whip.

For more information on cutless bearing spacing requirements, be sure to read our article on propeller shaft bearing spacing guide.

Upgrade a Traditional Stuffing Box to a Dripless Shaft Seal:

Our intermediate shaft bearings can also be used to replace traditional stuffing boxes when combined with a dripless shaft seal.  In this case, the cast bronze finish is machined with barbs to help mate up to the self-aligning shaft seal.  This is the same bearing used in our popular ISB-SA Combo shaft sealing system.

Each one of our water lubricated shaft bearings are precision machined from cast bronze and feature Duramax (Johnson) Cutless© bearings.

Available in shaft diameter sizes from 1″ to 4″.