Description
Ronstan Series 20 Triple Ball Bearing Block | Boat Supply Store
Engineered for demanding dinghy applications, this Ronstan Series 20 triple ball bearing block minimizes control line friction under load. It boasts 20mm Acetal sheaves rotating on stainless steel ball bearings, ensuring smooth operation and durability. With a maximum working load limit (MWL) of 400kg, this block is specifically designed for efficient sail trim and halyard management in competitive dinghy racing environments.
Key Features
- Experience low friction with precision ball bearing system.
- Achieve high load capacity for demanding situations.
- Benefit from lightweight construction for improved boat performance.
- Utilize precision molded Acetal sheaves for durability and smooth operation.
- Enjoy versatile head positioning with a two-way head fixable at 0° or 90°.
- Ensure secure attachment with the 2-axis shackle head.
- Handle up to 6mm rope diameter effectively.
- Maintain reliable performance in dinghy sailing applications.
Specifications
| Product Specifications | |
|---|---|
| Sheave Ø | 20mm |
| Ball Bearings | Stainless Steel |
| Sheave Material | Acetal |
| Max. Rope Ø | 6mm |
| M.W.L. | 400kg |
| B.L. | 850kg |
| Weight | 62g |
| Head Type | 2-Axis Shackle |
| Head Fixation | 0° or 90° |
Who This Is For
Sailors and boaters, particularly those involved in dinghy sailing, who require high-performance, low-friction, and durable control line management solutions. This block is ideal for competitive sailors seeking optimal efficiency and responsiveness in their rigging.
How It Compares
| Feature | Ronstan Series 20 Triple Ball Bearing Block | Competitor |
|---|---|---|
| Sheave Ø | 20mm | — |
| Max. Rope Ø | 6mm | — |
| M.W.L. | 400kg | — |
| Weight | 62g | 75g, 60g |
| Head Type | 2-Axis Shackle | Swivel Shackle, Swivel Shackle |
Common Concerns Answered
Are there any common issues reported with this block?
Occasional stiffness can occur if the block is not properly maintained or if it is used with highly abrasive lines. Regular cleaning and lubrication, in accordance with best practices for marine hardware, will ensure sustained smooth operation. For applications requiring a higher safety margin than the 400kg MWL, consider larger series blocks.
Is this block suitable for heavy-duty applications?
The Ronstan Series 20 block is engineered for demanding dinghy applications with a robust 400kg MWL. While highly capable, users involved in exceptionally heavy-duty operations on larger vessels may wish to explore blocks with higher working load limits.
What is the value proposition of this Ronstan block compared to alternatives?
This Ronstan Series 20 block offers a compelling balance of low friction, high load capacity for its size, and versatile head positioning, all in a lightweight package. Its precision engineering makes it a superior choice for sailors prioritizing performance and reliability in dinghy control systems.
Frequently Asked Questions
What is the maximum rope diameter this Ronstan Series 20 block can handle?
The Ronstan Series 20 triple ball bearing block is designed to accommodate a maximum rope diameter of 6mm.
What is the working load limit (MWL) for the Ronstan Series 20 triple block?
The working load limit (MWL) for the Ronstan Series 20 triple ball bearing block is 400kg.
Can the head of this Ronstan block be fixed at different angles?
Yes, the two-way shackle head on this Ronstan block can be fixed at either 0° or 90° for versatile rigging configurations.
What are the typical applications for the Ronstan Series 20 ball bearing block?
This block is specifically engineered for demanding dinghy applications, commonly used for mainsheets, vang systems, halyards, and other control lines where low friction and high performance are critical.
What materials are used in the construction of this Ronstan block?
The Ronstan Series 20 block features precision molded Acetal sheaves that run on stainless steel ball bearings, ensuring durability and low friction operation.
