Ronstan RF45140 Series 40 Ball Bearing Orbit Block, Single Stand-Up Swivel Head

Experience superior performance and durability with the Ronstan RF45140 Series 40 Ball Bearing Orbit Block. Engineered for the demands of competitive sailing, this block features an ultra-lightweight design combined with a 2-stage Orbital ball bearing system to deliver minimal friction and the highest working load in its class. Its robust construction, including a 316 stainless steel swivel head, ensures reliability in harsh marine environments. Upgrade your sailing control systems today for unmatched efficiency and reliability.

Key Benefits & Specifications:

• Ultra-Lightweight Construction: Achieves one of the world's lightest working load-to-weight ratios, minimizing mass without compromising strength.
• Low Friction 2-Stage Orbital Ball Bearing System: Ensures smooth, efficient operation across the full working load range for precise control.
• Class-Leading Working Load: Boasts the highest working load in its class, maximizing safety and performance under demanding conditions.
• Grade 316 Stainless Steel Swivel Shackle Head: Provides unlimited block rotation and superior corrosion resistance for ultimate durability in harsh marine environments.
• Toughened, Glass Fiber Reinforced Nylon Frame/Cheeks: Offers robust strength and resilience while keeping the block lightweight.
• 40mm Sheave Diameter: Optimized for a wide range of rope sizes, accommodating lines up to 9mm.
• Maximum Working Load (MWL): Rated for 325 kg (715 lbs), providing a reliable safety margin for critical applications.
• Breaking Load (BL): Offers exceptional strength at 650 kg (1433 lbs) for demanding tasks.

Applications:

• Mainsheet systems on dinghies to 5m (16ft)
• Spinnaker sheets on dinghies, sportsboats, and small keel boats to 5m (16ft)
• Halyard, vang, and backstay applications on boats to 8m (26ft)
• Control line applications on larger yachts