Quadruple block / carbo air swivel Harken

💪 Significant force multiplication.
⛵ Suitable for powerful tackles.
🌀 Lockable swivel to prevent twisting.
✨ Carbo composite body: lightweight and strong.
⚙️ Free ball bearings for smooth performance.
🔒 U-Lock system to lock rotation.
📏 Available in different sheave diameters (40"
Need an advice ?
QUADRUPLE PULLEY / SWIVEL CARBO AIR HARKEN: POWER AND CONTROL FOR YOUR BOAT
Quadruple pulley / swivel carbo air Harken is an essential piece of equipment for boats requiring significant force multiplication. Designed to be installed under the boom or in any tackle requiring high power, this pulley facilitates demanding maneuvers.
This quadruple pulley / swivel carbo air Harken is equipped with a lockable swivel that optimizes its use and prevents rope twisting. It is particularly suitable for powerful tackles used for sheeting, tightening, or adjusting a canting keel. It will allow you to pull hard effortlessly.
The body of the quadruple pulley / swivel carbo air Harken is made of Carbo composite, ensuring lightness and strength. Its free ball bearings on raceway, combined with Delrin acetal resin balls treated anti-UV, guarantee smooth and durable performance. The U-Lock system allows to block the rotation of the pulley as needed.
The quadruple pulley / swivel carbo air Harken is available in different sheave diameters (40 mm, 57 mm and 75 mm) to suit your specific needs. The supported rope diameter is 10 mm for the 40 and 57 mm models, and 14 mm for the 75 mm model. Working and breaking loads vary depending on the model chosen.
Read more
Technical specifications
- Designed for significant force multiplication.
- Suitable for installation under the boom or in a powerful tackle.
- Lockable swivel to prevent rope twisting.
- Carbo composite body (lightness and resistance).
- Free ball bearings on raceway.
- Delrin acetal resin balls treated anti-UV.
- U-Lock system to lock the rotation.
- Sheave diameters available: 40 mm, 57 mm and 75 mm.
- Supported rope diameter: 10 mm (40 and 57 mm models), 14 mm (75 mm model).
- Working and breaking loads vary depending on the model.




















