Ronstan Series 20 Triple Ball Bearing Block with 2-Axis Shackle Head

Series 20 Ball Bearing Block - Triple - 2-Axis Shackle Head

Features:

• Low friction
  
• High static and dynamic load capacity
  
• Lightweight
  
• Precision molded Acetal sheaves running on stainless steel or Torlon ball bearings provide high performance or 90

Applications:

• Dinghy control lines
  
• Dinghy vangs
  
• Cunninghams
  
• Traveller controls

Materials:

• Stainless steel ball bearings
  
• UV Stabilized Acetal sheave
  
• Grade 316 stainless steel load strap and head fitting
  
• Impact and UV resistant, fiber reinforced Nylon cheeks

Specifications:
Sheave : 20mm(3/4")
Max. Rope : 6mm(1/4")
Pin: 4mm(5/32")
M.W.L.: 400kg(880lbs)
B. L.: 850kg(1,870lbs)
Weight: 62g(2.2oz)

The Ronstan Series 20 Triple Ball Bearing Block with 2-Axis Shackle Head is designed for high-performance sailing and rigging applications. Built with precision molded Acetal sheaves running on stainless steel or Torlon ball bearings, this block delivers low friction and smooth operation under demanding loads. Its lightweight construction combined with high static and dynamic load capacity makes it ideal for controlling dinghy control lines, vangs, cunninghams, and traveller controls. The durable materials, including UV stabilized Acetal sheaves, stainless steel ball bearings, and Grade 316 stainless steel load strap and head fittings, ensure longevity even in harsh marine environments. The impact and UV resistant fiber-reinforced nylon cheeks add to the robustness, making this block suitable for various demanding sailing conditions. The sheave measures approximately 3/4 inch in diameter and accommodates ropes up to 1/4 inch thick. With a maximum working load of 880 pounds and a breaking load of 1,870 pounds, this block provides reliable performance for critical rigging tasks. Its compact weight of just 2.2 ounces makes it easy to handle and install, ensuring efficient sailing operations. Whether used on dinghies or other small vessels, this block offers exceptional durability, low friction, and ease of maintenance, making it a top choice for sailors seeking reliable performance and longevity in their rigging hardware.

Features:

• Low friction operation thanks to precision molded Acetal sheaves on stainless steel or Torlon ball bearings

• High static and dynamic load capacity suitable for demanding sailing applications

• Lightweight design for easy handling and installation

• Durable construction with UV stabilized Acetal, Grade 316 stainless steel, and impact-resistant nylon cheeks

• Compact size accommodating 1/4 inch ropes with a maximum working load of 880 pounds