PSS Shaft Seal Water-lubricated 55x83mm

Description

PSS Shaft Seal Water-lubricated 55x83mm. The environmentally friendly alternative to your leaking grease-lubricated propeller shaft bearing.

How does it work:

Free floating seals, duo cone seals or toric seals, they all work on the same principle.

The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange

The stationary carbon flange is attached to a heavy duty silicone bellow which is attached to the vessel’s stern tube (shaft log), with 316SS hose clamps.

This compression (pre-load) maintains constant contact between the two mating faces of the stainless-steel rotor and carbon flange.

This creates a perfect watertight connection.

Tolerance:

The carbon flange is over-bored to the shaft diameter allowing it to “float” around the shaft and thus compensate for most misalignment and vibration from the drive-line.

The stainless-steel rotor is sealed to the shaft by two O-rings that are recessed into the bore of the rotor.

These O-rings rotate with the shaft and the stainless-steel rotor, and therefore do not experience wear during operation.

Tip:

Grease-lubricated propeller shaft installations can easily be converted to water-lubricated installations.

Mount the gland thruster upside down on the inner gland and mount the PSS bellows on top.

Temperature Limits: <strong>-25 °C to +220 °C</strong>

Pressure limits: <strong> 2.75 BAR</strong>

Shaft RPM limits: <strong>10,000 RPM</strong>

Carbon graphite: Lapped to 4 HLB (0.00044″ tolerance)

316SS / Nitronic 50: Faced to 9-12 Ra

Bellows material: Molded formed silicone / fabric

Benefits at a glance:

<ul>

<li>Quick and easy installation.</li>

<li>Compact design.</li>

<li>Reduced maintenance to a minimum.</li>

<li>Effective functionality.</li>

<li>Long trouble free life.</li>

<li>Excellent solution for repowering.</li>

</ul>

As a cheaper alternative, we can also offer you the <a href=”https://ab-marineservice.com/en/product-categories/propeller-shaft-bearings-propeller-shaft-seals/”>stuffybox</a>, but please note that it requires annual maintenance!