Ronstan Series 50 Ball Bearing Block, Single Loop Top, 1100 lbs MWL

Experience superior performance and minimal friction with the Ronstan Series 50 Ball Bearing Block, RF50101. Engineered for demanding sailing conditions, this block features a robust 2-stage ball bearing system that ensures smooth, consistent operation across the full load range. Its durable, marine-grade construction makes it an ideal choice for mainsheets, spinnaker sheets, and halyards on boats up to 10 meters (33 feet). Upgrade your rigging with Ronstan's proven reliability and enhance your vessel's efficiency.

Key Benefits & Specifications:

• Low Friction 2-Stage Ball Bearing System: Provides consistent, smooth performance from low to high loads.
• High Static & Dynamic Load Capacity: Rated for a Maximum Working Load (MWL) of 1100 lbs (500 kg) and a Breaking Load (BL) of 3310 lbs (1500 kg).
• Optimized Rope Handling: Accepts a maximum rope diameter of 1/2 inch (12 mm), with a sheave diameter of 2 inches (50 mm) for efficient line management.
• Lightweight Design: Weighs only 3.4 oz (96-97 g), contributing to overall vessel lightness.
• Exceptional Durability: Constructed with Acetal or Torlon® ball bearings, a UV-stabilized acetal sheave, Grade 316 stainless steel load strap and head fitting, and impact/UV-resistant fiber-reinforced nylon cheeks for longevity in harsh marine environments.
• Easy Maintenance: Features cheek cut-outs designed for quick and simple bearing inspection and upkeep.

Recommended Pairings:

• Compatible with 1/2 inch marine ropes for various rigging applications.
• Integrates seamlessly into mainsheet, halyard, and spinnaker sheet systems.