Ronstan Series 40 All Purpose Cheek Block, Single Sheave – 400kg MWL

Maximize your sailing performance and control with the Ronstan Series 40 All Purpose Cheek Block. Engineered for robustness and smooth operation, this single sheave block is designed to excel under both high dynamic and static loads, making it an indispensable component for cruising and racing yachts up to 8 meters (26 feet). Its thoughtful design ensures reliability and longevity in the demanding marine environment.

Key Benefits & Specifications:

• Optimized for High Loads: Features an impressive 400 kg (880 lb) Maximum Working Load and a 1000 kg (2200 lb) Breaking Load, ensuring exceptional strength for critical control lines.
• Self-Lubricating Acetal Sheave: The 40mm (1 9/16 in) UV-stabilized Acetal polymer sheave runs on polished 316 stainless steel races, providing consistently smooth, low-friction operation with minimal maintenance.
• Durable Construction: Built with impact and UV-resistant, fiber-reinforced Nylon cheeks and a Grade 316 stainless steel bearing race for superior corrosion resistance and a long service life.
• Versatile Rope Compatibility: Accommodates ropes up to 12mm (1/2 in) in diameter, suitable for a wide range of sailing applications.

Compatibility & Pairings:

• Ideal for mainsheets, halyards, vangs, and spinnaker control lines on various boats, including off-the-beach catamarans, one-design classes, and sports boats.
• Can be mounted on masts and booms using a compatible curved surface adapter.
• Designed to be stackable with other Ronstan Series 40 deck organizers for customized rigging solutions.