Ronstan Series 20 Ball Bearing Block - Single, 20mm Sheave

Ensure smooth and reliable performance for your marine control lines with the Ronstan Series 20 Ball Bearing Block. Engineered with precision Acetal sheaves running on high-performance ball bearings, this block offers exceptional low friction for effortless operation. Its robust construction, featuring UV-stabilized Acetal, Grade 316 stainless steel fittings, and impact-resistant Nylon cheeks, guarantees durability and high load capacity in demanding marine environments. Ideal for dinghy control lines, vangs, and travellers, this lightweight block is a vital component for efficient rigging. Upgrade your sailing experience today.

Specifications:

• Sheave Diameter: 20mm (3/4"): Accommodates standard dinghy control lines.
• Maximum Working Load (MWL): 250kg (550lbs): Safely handles significant static and dynamic loads for reliable performance.
• Breaking Load (BL): 550kg (1,210lbs): Provides a substantial safety margin beyond normal operating limits.
• Maximum Rope Diameter: 6mm (1/4"): Optimized for common dinghy control line sizes.
• Weight: 20g (0.7oz): Minimally impacts overall rigging weight for better performance.
• UV-Stabilized Acetal Sheaves: Resists degradation from sunlight, ensuring longevity and smooth operation.
• High-Performance Ball Bearings: Delivers ultra-low friction for easy line adjustment and reduced wear.
• Grade 316 Stainless Steel Fittings: Offers superior corrosion resistance for extended life in harsh saltwater environments.
• Fiber-Reinforced Nylon Cheeks: Provides impact resistance and structural integrity for demanding use.

This block is an essential component for various marine control systems, including dinghy control lines, vangs, cunninghams, and traveller controls.