Aquadrive CVB30.20 – Moduline B20 Anti-Vibration CV Shaft System

ID 1351260

1-2 weeks delivery time

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The Aquadrive CVB30.20 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.

Description
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Aquadrive CVB30.20 – Moduline B20 Anti-Vibration CV Shaft System

The Aquadrive CVB30.20 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 loads 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 design also reduces vibration transfer to the hull structure and improves overall drivetrain reliability.

Main Components

Constant velocity shaft (CV joint assembly)
Thrust bearing with rubber suspension
Gearbox adapter flange
Shaft sleeve connection

Technical Specifications

Model	CVB30.20
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	340 ± 25 mm (tube shaft design)

Typical Applications

Vessel Type	Rated Power	Crankshaft Speed	Gearbox Ratio
Displacement Boat	130 kW (175 hp)	2600 rpm	3 : 1
Planing Boat	200 kW (270 hp)	3300 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 5° and 8°, depending on propeller shaft speed.