Ronstan 40mm Orbit Blocks

Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimizes the mass of the inactive return race and hub.

Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible.

Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.

Applications

• Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft).
• Halyard, vang and backstay applications on boats to 8m (26ft).
• Control line applications on larger yachts.
• Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema®.