AxiSeal BL610 Water-Lubricated Mechanical Propeller Shaft Seals Ø35–60 mm

AxiSeal BL610 Water-Lubricated Mechanical Propeller Shaft Seals Ø35–60 mm

AxiSeal BL610 Mechanical Propeller Shaft Seals are designed for water-lubricated marine propulsion shaft installations. The AxiSeal system uses axial mechanical sealing rather than conventional radial sealing arrangements such as stuffing box packing or lip seals.

The BL610 series includes five configurations for propeller shaft diameters of 35, 40, 45, 50 and 60 mm.

Axial Mechanical Sealing System

The AxiSeal uses two sliding sealing surfaces to create an axial seal around the rotating propeller shaft.

A rotating sliding ring turns with the propeller shaft and is pressed against a stationary silicon carbide (SiC) sliding ring by a spiral spring.

This arrangement maintains contact between the sealing surfaces while allowing rotation of the shaft.

Silicon Carbide Stationary Ring

The stationary sliding ring is manufactured from silicon carbide (SiC).

The combination of the sealing surfaces and a lubricating water film provides a low-friction contact interface.

Water Film Lubrication

The AxiSeal system is designed specifically for water-lubricated propeller shaft installations.

A water film between the sliding sealing surfaces provides lubrication and reduces friction, contributing to the long service life of the sealing assembly.

Spring-Loaded Sealing Contact

A spiral spring maintains pressure between the rotating and stationary sliding rings.

This spring-loaded arrangement forms part of the axial sealing mechanism.

Optional Inflatable Stand-by Seal

An optional stand-by sealing system is available for the AxiSeal.

The stand-by seal can be installed between the shaft flange and the main AxiSeal assembly. Using an air pump, its rubber element can be inflated to create a temporary watertight seal.

This arrangement allows the main AxiSeal assembly to be dismantled and damaged components to be replaced while the vessel remains afloat.

Available Models and Shaft Diameters

The following table lists the five AxiSeal models shown in the supplied catalogue.

Key Features

• Product: AxiSeal®.
• Series: BL610.
• Product Type: Axial Mechanical Propeller Shaft Seal.
• Application: Water-Lubricated Marine Propeller Shaft Systems.
• Sealing Principle: Axial Sliding Ring Contact.
• Rotating Component: Sliding Ring Rotating with the Shaft.
• Stationary Component: Silicon Carbide (SiC) Sliding Ring.
• Contact Mechanism: Spiral Spring.
• Lubrication: Water Film Between Sliding Surfaces.
• Optional Accessory: Inflatable Stand-by Seal.
• Shaft Diameters: 35 / 40 / 45 / 50 / 60 mm.
• Available Configurations: 5.

Technical Specifications

AxiSeal Selection

Select the appropriate AxiSeal BL610 mechanical shaft seal according to the propeller shaft diameter.

The available metric sizes are 35, 40, 45, 50 and 60 mm. An optional stand-by seal can be considered where the ability to service the main sealing assembly while afloat is required.