Selden 30 mm Ball bearing blocks

Selden 30 mm Ball bearing blocks

17 in stock

The Seldén Ball Bearing Block (BBB) is a benchmark low-friction block for dynamic control systems. Equipped with high-precision ball bearings, it provides immediate, smooth rotation and lets the line run freely even under light loads. Its lightweight, optimized design is ideal for systems requiring frequent and rapid adjustments, such as sheets on lightweight boats or fine-trim control lines. Made with UV-resistant materials and stainless-steel components, this block delivers responsive technical performance and exceptional durability in demanding marine environments.

View full details
View full details

Get in touch

At Saildeck Gear, we specialize in technical rigging, blocks, winches, and deck hardware for boats between 30 and 60 feet. We know that every boat is different: working loads, mast dimensions, the type of maneuver, and how you use your boat—cruising, racing, or charter—all affect what you actually need.

That’s why we don’t publish a fixed price on the product page: we prefer to speak with you first.

Tell us which product you’re interested in and which boat you’ll be installing it on, and we’ll prepare a quote tailored to your setup, including technical advice and with no obligation.

If you have any questions about compatibility, measurements, or which part is right for your rig, you can also contact us here. We normally respond within 24–48 hours.

The information you provide will be used solely to respond to your inquiry. Please see our Privacy Policy for more information.