Ronstan RF41811 Series 40 All Purpose Block, Single Cheek

Series 40 All Purpose Block - Single Cheek

Features:

• Exceptionally high working loads
• Low maintenance, long service life
• Self-lubricating sheave

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave. Stackable with Ronstan Series 40 deck organizers.

Applications:

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

Materials:

• U.V. stabilised Acetal sheaves
• Impact and U.V. resistant, fiber reinforced Nylon cheeks
• Grade 316 stainless steel bearing race
• Alloy cheek plates

Ronstan Series 40 All Purpose Block - Single Cheek

Designed for sailors who need a versatile, durable solution for onboard line control, the Ronstan RF41811 Series 40 All Purpose Block delivers dependable performance for cruising and racing applications. Its self-lubricating Acetal polymer sheave runs on polished Grade 316 stainless steel races, allowing the block to perform effectively with both dynamic and high static loads. Use it for mainsheets, halyards, vangs, and spinnaker control lines on off-the-beach catamarans, one-design classes, and sportsboats up to 26 feet.

The single-cheek block is built for low maintenance and long service life in demanding sailing environments. It can be mounted on masts and booms with the appropriate curved surface adapter, stacked to create a double block, or combined with Ronstan Series 40 deck organizers. When stacked, no more than 60% of the rated working load should be applied to the upper sheave. This flexible design makes the RF41811 a practical choice when configuring reliable control-line systems for a wide range of sailing setups.

Key Features:

• Feature: Exceptionally high working loads support demanding sheet, halyard, vang, and control-line applications.
• Feature: Self-lubricating Acetal polymer sheave helps provide low-maintenance operation.
• Feature: Polished Grade 316 stainless steel bearing race supports smooth operation under dynamic and high static loads.
• Feature: Stackable design can create a double block and is compatible with Ronstan Series 40 deck organizers.
• Feature: Mounting capability with a curved surface adapter allows installation on masts and booms.

Product Details:

• Brand: Ronstan
• Model: RF41811
• Product type: Series 40 All Purpose Block, single cheek
• Sheave material: UV-stabilized Acetal
• Cheek material: Impact- and UV-resistant, fiber-reinforced Nylon
• Bearing race: Grade 316 stainless steel
• Additional material: Alloy cheek plates
• Applications: Mainsheet, halyard, vang, and spinnaker control lines
• Recommended boat use: Off-the-beach catamarans, one-design classes, and sportsboats up to 26 feet

Choose the Ronstan RF41811 Series 40 All Purpose Block for a durable, adaptable component in your sailing control-line system.

SEO Meta Description: Shop the Ronstan RF41811 Series 40 All Purpose Block for sailing control lines, featuring a self-lubricating sheave and durable construction.

Features:

• Exceptionally high working loads support demanding sheet, halyard, vang, and control-line applications.

• Self-lubricating Acetal polymer sheave helps provide low-maintenance operation.

• Polished Grade 316 stainless steel bearing race supports smooth operation under dynamic and high static loads.

• Stackable design can create a double block and is compatible with Ronstan Series 40 deck organizers.

• Mounting capability with a curved surface adapter allows installation on masts and booms.