Ronstan Series 50 Ball Bearing Block - Single Loop Top (Part RF50101)

Series 50 Ball Bearing Block - Single Loop Top

Sheaves running on Acetal or Torlon ball bearings provide high performance low friction. The 2-stage ball bearing system provides consistent performance over the full load range.

Features:

• Low friction, 2-stage ball bearing system
• High static and dynamic load capacity
• Lightweight
• Cheek cut-outs for easy bearing maintenance

Specifications:

• Max. Rope diameter (in): 1/2
• M.W.L. (lb): 1100lbs
• Sheave diameter (in): 2
• B.L. (lb): 3310lbs
• Weight (oz): 3.4oz

Materials:

• Acetal ball bearings
• UV-stabilized acetal sheave
• Grade 316 stainless steel load strap and head fitting
• Impact and UV-resistant, fiber-reinforced nylon cheeks

The Ronstan Series 50 Ball Bearing Block with Single Loop Top is engineered for high-performance sailing and rigging applications. Featuring sheaves that run on durable Acetal or Torlon ball bearings, this block ensures smooth, low-friction operation under various load conditions. The innovative 2-stage ball bearing system maintains consistent performance across the entire load range, making it ideal for demanding environments. Its lightweight design combined with high static and dynamic load capacities provides both strength and ease of handling. Cheek cut-outs facilitate straightforward bearing maintenance, reducing downtime and simplifying servicing tasks. Crafted with UV-stabilized Acetal sheaves and impact-resistant, fiber-reinforced nylon cheeks, this block withstands harsh marine conditions. The Grade 316 stainless steel load strap and head fitting contribute to the unit's corrosion resistance, ensuring longevity in saltwater environments. Suitable for ropes up to 1/2 inch in diameter, the Ronstan Series 50 ball bearing block supports a maximum working load of 1,100 pounds and a breaking load of 3,310 pounds. Its compact size and lightweight construction, weighing only 3.4 ounces, make it a versatile choice for various sailing and rigging needs. Whether replacing an existing block or outfitting a new setup, this product delivers reliable, smooth performance and durability with every use.

Features:

• Low friction, 2-stage ball bearing system for smooth operation

• High static and dynamic load capacity for demanding use

• Lightweight design enhances handling and installation

• Cheek cut-outs for easy bearing maintenance and servicing