Name: Seldén BBB 20 Double Block Through-Deck Mounted Ball Bearing
Brand: Seldén
SKU: SELDEN-BBB-20-DB-DECK
Price: 32.61 EUR
Availability: InStock

The Seldén BBB 20 double block with through-deck mounting is a compact ball bearing block specifically designed for through-deck or mast mounting on smaller sailing yachts and dinghies. This double block is ideal for trim lines, cunningham systems and other lightly loaded line systems where a neat, clean installation is desired. The two sheaves provide a mechanical advantage that facilitates sail trimming, even in the smallest configurations.

The construction of this Seldén BBB 20 double block is based on glass fibre reinforced polyamide, a material that is extremely light yet surprisingly strong. The stainless steel ball bearings guarantee the highest strength under low dynamic loads, ensuring the block rotates smoothly even after extended periods of non-use. Weighing only 27 grams, this is one of the lightest double blocks on the market, perfect for weight-conscious sailors who count every gram. The block is mounted through the deck or mast with two M4 screws, resulting in a clean and permanent installation.

With a safe working load of 100 kg and a breaking strength of 200 kg, this double block is designed for lighter applications where reliability and weight savings are more important than brute force. The compact size makes it suitable for mounting in locations where space is limited, such as on the mast or in a recessed deck plate. The block accepts lines from Ø2 to Ø6 mm, making it suitable for most trim and control systems on small to medium-sized boats.