Sheaves for blocks

Pulley blocks are a fundamental component for efficient load management onboard. Whether you're adjusting the mainsail, jib, or gennaker, a quality pulley makes all the difference in terms of performance and longevity. Here you'll find Viadana pulleys, synonymous with reliability in the sailing world.

Crafted from durable materials like aluminum, Delrin, and stainless steel, our marine pulleys are engineered to withstand high loads and resist marine corrosion. Available in various sizes and configurations, they adapt to any type of boat and application. Always check the maximum working load indicated for each model.

The choice of material depends on the intended use. Delrin pulleys offer an excellent balance of lightness and strength, suitable for halyards and light sheets. Aluminum pulleys are more robust and suitable for heavier loads. Finally, stainless steel pulleys guarantee maximum durability and corrosion resistance, perfect for areas most exposed to saltwater.

Basile Workshop Tip

• Always verify the maximum rope diameter supported by the pulley. An excessive diameter can compromise proper functioning and prematurely wear the rope.


• Regularly lubricate the pulleys with a marine-grade grease. This reduces friction and extends the component's service life.


• Periodically check the wear and tear on the pulleys. Replace pulleys that show signs of corrosion, cracks, or deformation.


• For the most critical maneuvers, such as the mainsail halyard, choose pulleys with ball bearings to minimize friction and maximize performance.

Remember to pair the pulleys with the right blocks. A quality block, with a shackle or snap hook, completes the system for smooth and safe operation.

How to Choose the Right Boat Pulley for My Sailboat?

The choice depends on several factors: the type of maneuver (halyard, sheet, etc.), the expected working load, the rope diameter, and the environmental conditions. For light halyards and sheets, a Delrin pulley is sufficient. For heavier loads, it's better to opt for aluminum or stainless steel. Always check the maximum working load indicated.

What is the Difference Between a Pulley with Ball Bearings and One Without?

Pulleys with ball bearings offer superior smoothness, reducing friction and facilitating maneuvers. They are particularly suitable for main halyards and sheets, where fluidity is essential for performance. Pulleys without bearings are simpler and more economical, suitable for less critical maneuvers.

Can I Use a Pulley for Mooring?

Technically yes, but it's not the best practice. Pulleys are designed for dynamic loads, while mooring lines are subjected to static loads and chafing stress. For mooring, it's better to use thimbles and stainless steel shackles, specifically designed to withstand these stresses.

How to Choose the Right Boat Pulley for My Sailboat?

The choice depends on several factors: the type of maneuver (halyard, sheet, etc.), the expected working load, the rope diameter, and the environmental conditions. For light halyards and sheets, a Delrin pulley is sufficient. For heavier loads, it's better to opt for aluminum or stainless steel. Always check the maximum working load indicated.

What is the Difference Between a Pulley with Ball Bearings and One Without?

Pulleys with ball bearings offer superior smoothness, reducing friction and facilitating maneuvers. They are particularly suitable for main halyards and sheets, where fluidity is essential for performance. Pulleys without bearings are simpler and more economical, suitable for less critical maneuvers.

Can I Use a Pulley for Mooring?

Technically yes, but it's not the ideal solution. Pulleys are designed for dynamic loads, while mooring lines are subjected to static loads and chafing stress. For mooring, it's better to use thimbles and stainless steel shackles, specifically designed to withstand these stresses.