Ronstan RF40200 Series 40 Double Ball Bearing Block with Swivel Head

Series 40 Ball Bearing Block - Double - Swivel Head

Features:

• Low friction Acetal or Torlon bearing system
• Lightweight
• Cheek cut-outs for easy bearing maintenance
• Features a swivel shackle head for full 360 rotation

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.

Applications:

• Mainsheet
• Halyard
• Vang
• Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)

Ronstan Series 40 Double Ball Bearing Block with Swivel Head is designed for sailors who need smooth, dependable line handling on off-the-beach catamarans, one-design classes, and sportsboats up to 26 feet. The RF40200 combines a low-friction bearing system with a swivel shackle head, helping mainsheet, halyard, vang, and spinnaker control lines run efficiently while allowing the block to align naturally with changing line angles.

Sheaves supported by Acetal or Torlon ball bearings deliver high-performance, low-friction operation. The two-stage ball bearing system provides consistent performance across the full load range, making this double block a practical choice for sailing systems that require responsive trimming and reliable line movement. Its lightweight construction helps support efficient rigging without adding unnecessary weight to the system.

Cheek cut-outs provide convenient access for bearing maintenance, helping sailors service the block when needed. The swivel shackle head rotates through 360 degrees, allowing the block to orient with the line and helping reduce twists or awkward alignment during use. Whether installed for mainsheet control, halyard routing, vang systems, or spinnaker control lines, the RF40200 is built for versatile small-boat sailing applications.

Key Features:

• Low-friction Acetal or Torlon bearing system: Supports smooth, efficient sheave movement for responsive line handling.
• Two-stage ball bearing system: Provides consistent performance across the full load range.
• Lightweight design: Helps maintain an efficient sailing and rigging setup.
• Cheek cut-outs: Provide access for easier bearing maintenance.
• 360-degree swivel shackle head: Allows the block to align with changing line directions.

Product Details:

• Brand: Ronstan
• Model: Series 40
• Part number: RF40200
• Block configuration: Double block with swivel head
• Bearing type: Acetal or Torlon ball bearing system
• Intended applications: Mainsheet, halyard, vang, and spinnaker control lines
• Recommended vessel type: Off-the-beach catamarans, one-design classes, and sportsboats up to 26 feet

Choose the Ronstan RF40200 Series 40 Double Ball Bearing Block for smooth, adaptable line control in demanding small-boat sailing applications.

SEO Meta Description: Ronstan RF40200 Series 40 double ball bearing block with 360-degree swivel head for smooth, low-friction line control on boats up to 26 feet.

Features:

• Low-friction Acetal or Torlon ball bearing system for smooth, efficient line handling.

• Two-stage ball bearing system provides consistent performance across the full load range.

• Lightweight construction supports an efficient sailing and rigging setup.

• Cheek cut-outs allow easier access for bearing maintenance.

• 360-degree swivel shackle head helps the block align with changing line directions.