Ronstan, Series 40 Ball Bearing Orbit Block™, RF48109

Description

The Series 40 Ball Bearing Orbit Blocks™ offer an exceptional balance of strength, performance, and reliability. They feature leading dynamic and static load ratings, the highest available for this size of performance blocks. The lightweight and strong design uses toughened glass fibre reinforced nylon cheeks, replacing traditional stainless steel straps for enhanced performance and reliability.

This range includes single and double sheave lashing or soft attachment options, as well as multiple sheave blocks, including quad and quin sheaves. It is versatile enough to support systems up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.

Equipped with a carbon reinforced C-Cleat™, these blocks ensure secure rope holding with minimal entry and exit efforts, and fairleads allow for fast action from any angle. The cleat arms, made from stainless steel, are adjustable to your preferred cleating angle.

The ball bearing versions use a 2-stage bearing system to minimize friction, while a secondary full-contact bearing maintains low friction across the full working load range. High Load versions are designed for applications with high dynamic or static loads, featuring a high strength grade 2205 stainless steel sheave and hub.

Features include a 2-stage ball bearing system and an integrated becket. The RF48109 can be opened and used as a snatch block, suitable for mainsheet systems and spinnaker sheets on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft). It is also applicable for halyard, vang, and backstay applications on boats up to 9m (30ft), and control line applications on larger yachts.

Specifications

• B.L. (kg): 800
• M.W.L. (kg): 400
• Max. Rope diameter (mm): 10
• Sheave diameter (mm): 40mm
• Type of Block: Single, Snatch
• Weight (g): 47

Notes: This product features a rotating cheek for snatch block option. Can also be lashed closed if not required. See user instructions. Please note BL of DSH-4GRY soft shackle is 500kg, less than the RF48109.