Ronstan Series 55 Ball Bearing Orbit Block, Single Becket, 55mm

Experience unparalleled lightweight performance and strength with the Ronstan Series 55 Ball Bearing Orbit Block. Engineered for demanding marine applications, this block delivers exceptional low-friction efficiency and high load capacity, making it ideal for competitive sailing and cruising alike. Proudly designed with advanced fiber and polymer technology, Ronstan Orbit Blocks™ are renowned for their strength-to-weight ratio. Upgrade your rigging for superior control and reliability.

Key Features & Benefits:

• Ultra-Lightweight Design: Weighing only 88g (3.1oz), it's among the world's lightest blocks per kilogram of working load, minimizing overall rigging weight and enhancing boat performance.
• Low-Friction 2-Stage Orbital Ball Bearing System: Features high compression strength Acetal ball bearings and a secondary carbon fiber reinforced, PTFE impregnated Nylon bearing for minimal friction across the full working load range, ensuring smooth and efficient line handling.
• Highest Working Load in its Class: With a Maximum Working Load (MWL) of 500kg (1,100 lbs) and a Breaking Load (B.L.) of 1,000kg (2,200 lbs), it offers superior strength for critical applications.
• Durable Construction: Built with a Grade 316 stainless steel swivel shackle head for ultimate durability and compatibility with harsh fixing points, ensuring longevity in marine environments.
• Optimized Sheave Design: A 55mm (2-5/32") carbon fiber reinforced, PTFE impregnated Nylon sheave with a maximum rope diameter of 10mm (3/8") handles various lines efficiently.
• Fiber-Reinforced Load Frame: Supported by a toughened, glass fiber reinforced Nylon frame, computer-modeled for stress optimization, maximizing load performance.
• Integrated Becket: Features an ultra low profile integrated becket for versatile rigging options and clean installation.

Applications:

• Mainsheet systems on dinghies, sportsboats, and small keelboats up to 9m (30ft).
• Spinnaker sheets on dinghies, sportsboats, and small keelboats up to 9m (30ft) (including lateral lead blocks).
• Halyard, Vang, and Backstay applications on boats to 8m (26ft).
• Control line applications on larger yachts.