Water-lubricated shaft bearing with external brass sleeve for maritime shaft lines, stern tubes, shaft brackets, and propeller shafts. The cylindrical bearing bushing combines a robust brass sleeve with an internal hydro-lubricating rubber bearing, which supports and guides the rotating propeller shaft during operation.
Water acts as a lubricant between the shaft and the rubber bearing surface. The internal liner is profiled with longitudinal grooves or water channels that facilitate water flow along the bearing surface. Depending on the variant, the rubber lining is made of NBR nitrile rubber, including material code PV68K.
The bearings are available in several metric combinations of inside diameter, outside mounting diameter, and axial length. They are intended for various propeller shaft diameters and are mounted in a suitable bearing housing, stern tube, shaft tube, or shaft bracket. Selected variants are cylindrical and flangeless.
Compatibility is determined by the physical dimensions of the specific installation and not by motor, gearbox, or boat model. Always check the propeller shaft diameter, the inside measurement of the bearing housing, the available installation length, as well as any requirements for tolerance, press fit, and installation clearance before ordering and assembly. No maximum shaft speed or product-specific press fit tolerance is specified.
Key features
Water-lubricated plain bearing for marine shaft lines and propeller shafts
Internal bearing of hydro-lubricating rubber
External sleeve or shell of brass
Longitudinal water and lubrication grooves in selected variants
Metric internal and external dimensions
Multiple combinations of shaft diameter, mounting diameter, and length
Cylindrical construction, with non-flanged variants
Selected variants in NBR nitrile rubber
Cross-references in the CEF MS series on relevant variants
Sales unit: 1 pc.
