Hydradrive HD-125 Constant Velocity Propeller Shaft Drive Kit with Thrust Bearing and Adapter

Hydradrive HD-125 Constant Velocity Propeller Shaft Drive Kit with Thrust Bearing and Adapter

The Hydradrive HD-125 Constant Velocity Propeller Shaft Drive Kit is designed for marine propulsion installations requiring high torque transmission and dedicated propeller thrust support. The system combines a homokinetic (constant velocity) drive shaft, a thrust bearing and a gearbox adapter.

The HD-125 is specified for marine engines up to approximately 170 HP, with applications on planing boats up to 220 HP. It accommodates propeller shaft diameters of 35, 40, 45 and 50 mm.

The constant velocity drive shaft transmits torque between the gearbox and propeller shaft while accommodating angular displacement. The dedicated thrust bearing transfers propeller thrust to the vessel's hull rather than through the engine mounting system.

Key Features

• Constant velocity transmission: Homokinetic drive shaft for connecting the marine gearbox and propeller shaft.
• Dedicated thrust bearing: Transfers propeller thrust directly to the hull through its mounting arrangement.
• Engine power: Up to approximately 170 HP.
• Planing boat applications: Up to 220 HP.
• Maximum propeller thrust: 18,000 N.
• Maximum shaft torque: 1,100 Nm.
• Maximum shaft speed: 4,000 RPM.
• Variable-length CV shaft: 210 ± 40 mm.
• Compatible propeller shafts: 35, 40, 45 and 50 mm diameter.
• Gearbox adapter: Included as part of the drive system set.

Technical Specifications

Kit Contents

• Hydradrive HD-125 constant velocity drive shaft
• Thrust bearing assembly
• Gearbox adapter

Propeller Shaft Compatibility

Constant Velocity Drive and Thrust Bearing

The Hydradrive HD-125 uses a constant velocity drive shaft to transmit torque between the gearbox and propeller shaft while accommodating angular differences between connected components.

The dedicated thrust bearing provides a mounting point for propeller thrust loads, directing them into the hull rather than through the engine and gearbox mounts.

This arrangement allows the propulsion system to accommodate shaft alignment differences while reducing the transmission of vibration through the drivetrain.

Selection and Installation

Before ordering, verify the following installation requirements:

• Engine power: Up to approximately 170 HP, or up to 220 HP for the specified planing boat application.
• Maximum shaft torque: 1,100 Nm.
• Maximum propeller thrust: 18,000 N.
• Propeller shaft diameter: 35, 40, 45 or 50 mm.
• Gearbox: Manufacturer, model and reduction ratio.
• Output flange: Bolt circle diameter and centering dimensions.
• CV shaft length: 210 ± 40 mm.

The appropriate gearbox adapter and propeller shaft connection must be selected according to the specific installation.