Ronstan Series 20 Stand-Up Ball Bearing Block, 20mm, 550lb SWL

Elevate your sailing performance with the Ronstan Series 20 Stand-Up Ball Bearing Block. Engineered for high performance in demanding marine applications, this all-purpose block features self-lubricating Acetal polymer sheaves and a two-stage ball bearing system for consistent, low-friction operation across the full working load range. It's an ideal choice for sheets, halyards, and control line applications in both cruising and racing scenarios. Upgrade your rigging today with Ronstan's trusted reliability.

Key Benefits & Specifications:

• Ultra-Low Friction: Precision-molded Acetal sheaves run on stainless steel ball bearings, ensuring smooth, efficient line handling for optimal control.
• High Load Capacity: Boasts a Safe Working Load (SWL) of 550 lbs (250 kg) and a Breaking Load (BL) of 1760 lbs (800 kg), providing exceptional strength and reliability for critical lines.
• Lightweight Design: Weighing only 0.7 oz (20 g), it minimizes rig weight to enhance overall vessel performance.
• Durable Construction: Built with UV-stabilized Acetal sheaves, Grade 316 stainless steel load strap and head fitting, and impact-resistant fiber-reinforced Nylon cheeks, ensuring long-term durability in harsh marine environments.
• Versatile Stand-Up Loop Top: Features a Captive Lock™ universal head that can be fixed in two planes or allowed to swivel, offering flexible attachment options and precise alignment for various rigging setups.
• Optimized Line Compatibility: Designed for a maximum line size of 1/4 inch (6 mm) and a sheave diameter of 3/4 inch (20 mm), accommodating common dinghy control lines and general marine applications.

Recommended Applications: Ideal for dinghy control lines, vangs, cunninghams, and traveler controls, and perfect for creating powerful, efficient purchase systems.