ID
976357
$ 588.63
1-2 weeks delivery time
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The Vetus KO52 Type 6 Flexible Coupling is a premium marine shaft coupling engineered for 30 mm propeller shafts and V-drive propulsion systems. Featuring a special conical clamping hub, it ensures a perfect 100% concentric fit, reducing installation time and eliminating alignment errors. Designed to dampen torsional vibrations and absorb drivetrain shocks, it provides smooth, quiet, and safe power transmission between the engine and propeller shaft. Suitable for engines up to 91 hp (2:1 gear reduction), the KO52 offers robust performance and long-term reliability in both pleasure and light commercial craft.
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Vetus KO52 Type 6 Flexible Shaft Coupling – Ø 30 mm Shaft, 4"/5" Flange, for V-Drives
The Vetus KO52 Type 6 Flexible Coupling is designed to provide optimal vibration damping, alignment accuracy, and smooth torque transmission in marine propulsion systems. Equipped with a precision-engineered conical clamping hub, it guarantees a 100% concentric fit between the propeller shaft and gearbox flange, minimizing vibration, noise, and installation time.
This coupling is ideal for V-drive installations and other applications where shaft alignment is critical. Its flexible rubber element effectively absorbs torsional vibrations and cyclical irregularities, preventing mechanical stress on the engine, shaft, and bearings. The KO52 ensures quiet, balanced operation across all RPM ranges, extending drivetrain life and improving onboard comfort.
With a standard 4" and 5" flange pattern, the KO52 offers direct compatibility with Hurth, Velvet, Technodrive, ZF, and PRM gearboxes. Adapter flanges are available for Volvo, Yanmar, and Kanzaki transmissions, providing a versatile solution for a wide range of propulsion configurations.
Key Features
- Special conical clamping hub guarantees 100% concentric shaft fit
- Fast, precise installation – no keyway or taper machining required
- High-efficiency vibration and noise damping
- 4” and 5” flange compatibility for common gearbox models
- Ideal for V-drive propulsion systems
- Secured against axial and radial shear for maximum safety
- Ensures perfect alignment and smooth torque transfer
- Adapter flanges available for Volvo, Yanmar, and Kanzaki gearboxes
- Durable marine-grade construction for long service life
Technical Specifications
Parameter Value Product Code KO52 Manufacturer Vetus Purpose Flexible shaft coupling for marine propulsion systems Application Suitable for V-drive configurations Shaft Diameter Ø 30 mm Flange Diameter 4" / 5" (standard gearbox flange) Total Diameter 137 mm Height 84 mm Weight 2.7 kg DIN 6270B (Pleasure Craft) 3.9 kW / 100 shaft RPM (5.3 HP) DIN 6270A (Commercial Craft) 3.3 kW / 100 shaft RPM (4.5 HP) Maximum Power (2:1 Gear Reduction) Approx. 91 HP Maximum Power (2.5:1 Gear Reduction) Approx. 88 HP Hub Type Conical clamping hub – 100% concentric fit Construction Steel hub with vulcanized rubber damping element Safety Features Axial and radial anti-shear locking design Compatible Gearboxes (Direct Fit) Hurth, Velvet, Technodrive, ZF, PRM Adapter Flanges (Optional) FLANGE1 (Yanmar/Kanzaki), FLANGE2 & FLANGE2A (Volvo) Recommended Stud Kit UNISET4/5 for direct gearbox installation
Applications
- Marine propulsion systems with 30 mm propeller shafts
- Engines up to approximately 91 HP (2:1 gear ratio)
- V-drive installations requiring precision alignment
- Direct-fit for Hurth, Velvet, Technodrive, ZF, and PRM gearboxes
- Custom installations using Volvo, Yanmar, or Kanzaki adapter flanges
The Vetus KO52 Type 6 Flexible Coupling combines superior vibration isolation, mechanical precision, and installation simplicity. Its conical clamping hub ensures flawless alignment and long-term performance, providing smooth propulsion, reduced drivetrain wear, and enhanced comfort for all marine applications.
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