ID
1351259
1-2 weeks delivery time
Our managers will contact you and clarify the terms of the order
The Aquadrive CVB21.20 Moduline B20 is a marine anti-vibration propulsion system consisting of a CV driveshaft, thrust bearing, and gearbox adapter flange. It isolates engine vibrations and transfers propeller thrust to the vessel structure instead of the gearbox. Maximum torque 1400 Nm, maximum shaft speed 2000 rpm, and maximum continuous thrust 14 kN.
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Aquadrive CVB21.20 – Moduline B20 Anti-Vibration CV Shaft System
The Aquadrive CVB21.20 Moduline B20 is a marine propulsion driveline system designed to isolate the engine from propeller forces and vibrations. The system transfers propeller thrust through a dedicated thrust bearing mounted on the vessel foundation, reducing stress on the gearbox and improving onboard comfort.
The Aquadrive system integrates a constant velocity (CV) shaft, a thrust bearing assembly, and a gearbox adapter flange. The CV shaft consists of two universal joints connected by a floating shaft, allowing axial and radial movement while maintaining smooth torque transmission even when the engine moves on its mounts.
The Moduline modular construction allows flexible installation and simplifies engine alignment. The modular system design also helps reduce vibration transfer to the hull while improving drivetrain reliability.
Main Components
- Constant velocity shaft (CV joint assembly)
- Thrust bearing with rubber suspension
- Gearbox adapter flange
- Shaft sleeve connection
Technical Specifications
Model CVB21.20 System Type Aquadrive Moduline B20 Maximum Static Torque (ØA = 2") 1400 Nm / 1034 lbft Maximum Propeller Shaft Speed 2000 rpm Maximum Continuous Propeller Thrust 14 kN / 3150 lbf Minimum Driveshaft Length 280 ± 24 mm (tube shaft design)
Typical Applications
Vessel Type Rated Power Crankshaft Speed Gearbox Ratio Displacement Boat 100 kW (135 hp) 2600 rpm 3 : 1 Planing Boat 165 kW (225 hp) 3900 rpm 2 : 1
Propeller Shaft Options
The B20 standard version supports the following propeller shaft diameters:
- 35 mm
- 1 1/2"
- 40 mm
- 1 3/4"
- 45 mm
- 50 mm
- 2"
Notes
Rated application examples are based on optimal operating conditions with approximately 2° joint angle for each CV joint. If the operating angle exceeds 2°, the maximum permitted power should be reduced by approximately 8–9% for each additional degree.
The maximum allowable joint angle typically ranges between 4° and 8°, depending on propeller shaft speed.
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