Centaflex-M Flexible Marine Propeller Shaft Couplings M127 & M160 Ø25–40 mm

Centaflex-M Flexible Marine Propeller Shaft Couplings M127 & M160 Ø25–40 mm

Centaflex-M Flexible Marine Propeller Shaft Couplings are designed for installation between the marine reduction gearbox and the propeller shaft. The elastic coupling system provides vibration damping, noise isolation and compensation for shaft alignment deviations within marine propulsion assemblies.

The range includes Centaflex M127 and M160 couplings for propeller shaft diameters from 25 to 40 mm, with standard and Yanmar-specific flange configurations.

Elastic Coupling for Marine Propulsion Systems

The Centaflex-M coupling features an elastic construction designed to absorb vibrations generated by the engine and transmitted through the marine propulsion system.

Its high elasticity provides vibration damping, particularly at low rotational speeds.

Noise and Vibration Reduction

According to the supplied catalogue, the coupling provides an average noise reduction of approximately 5 dBA, corresponding to a reported reduction of more than 30%.

The elastic connection helps isolate structure-borne noise and vibrations between the gearbox and propeller shaft assembly.

Misalignment Compensation

The flexible coupling compensates for different forms of shaft alignment deviation, particularly angular misalignment.

This compensation helps limit wear on the bearings of both the propeller shaft and the reduction gearbox.

Axial Thrust Transmission

The Centaflex-M coupling arrangement is designed to transmit propeller shaft axial thrust in both forward and reverse directions through the propulsion installation.

Cylindrical Clamping Hub

The connection between the coupling and the propeller shaft is made using a cylindrical clamping hub.

This mounting arrangement does not require machining of the propeller shaft during installation.

Electrical Isolation

The coupling provides electrical isolation between connected propulsion components, contributing to protection against electrolysis.

Pre-Machined Components

According to the catalogue, the coupling components are fully machined and prepared for installation.

Centaflex M127 Couplings

The M127 series includes five configurations for propeller shaft diameters of 25, 30 and 35 mm.

Available flange connections:

• Standard 4": For shaft diameters 25, 30 and 35 mm.
• Yanmar 4": For shaft diameters 25 and 30 mm.

Centaflex M160 Couplings

The M160 series includes three configurations for shaft diameters of 30, 35 and 40 mm.

All listed M160 versions feature a Standard 4" and 5" flange configuration.

Available Models and Specifications

Key Features

• Product Series: Centaflex-M.
• Available Models: M127 and M160.
• Product Type: Flexible Marine Propeller Shaft Coupling.
• Installation Position: Between Reduction Gearbox and Propeller Shaft.
• Construction: Elastic Coupling.
• Vibration Damping: Yes.
• Average Noise Reduction: Approximately 5 dBA.
• Misalignment Compensation: Including Angular Misalignment.
• Shaft Connection: Cylindrical Clamping Hub.
• Electrical Isolation: Yes.
• Shaft Diameters: 25 / 30 / 35 / 40 mm.
• Flange Configurations: Standard 4", Yanmar 4", Standard 4" and 5".
• Available Configurations: 8.

Technical Specifications

Coupling Selection

Select the appropriate Centaflex-M coupling according to three parameters:

• Model: M127 or M160.
• Shaft Diameter: Propeller shaft diameter in millimetres.
• Flange: Standard 4", Yanmar 4" or Standard 4" and 5".

Check the propeller shaft diameter and the gearbox flange configuration against the selected coupling model before ordering.