Description
Ronstan Series 40 Orbit BB Double Block w/ Becket | Boat Supply Store
Engineered for critical control lines on performance craft, this Ronstan block provides exceptionally low friction and high load capacity essential for efficient sail trim. It features a robust 2-stage ball bearing system capable of handling a 1320 lb. Working Load Limit (MWL) with a maximum rope diameter of 3/8 inch. Ideal for dinghies, sportsboats up to 8m (26ft), and boats up to 9m (30ft), it ensures reliable operation for mainsails, spinnakers, halyards, and vang systems.
Key Features
- Class-leading dynamic and static load ratings for ultimate reliability
- Lightweight and strong toughened glass fiber reinforced nylon cheeks
- Low-friction 2-stage ball bearing system for effortless operation
- Carbon-reinforced C-Cleat™ ensures secure rope holding
- Adjustable cleat arms for customized cleating angles
- High-performance cleating with minimal entry and exit effort
- Versatile attachment options including soft attachment, lashing, and swivel shackle
- Low profile and compact design minimizes deck clutter
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 1-9/16 in. |
| Max. Rope Diameter | 3/8 in. |
| Pin Diameter | 5/32" |
| Working Load Limit (MWL) | 1320 lb. |
| Breaking Load (B.L.) | 2650 lb. |
| Weight | 4.6 oz. |
Who This Is For
Sailors and boaters with dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft). Also suitable for boats up to 9m (30ft) requiring high-efficiency control line systems.
How It Compares
| Feature | Ronstan Series 40 Orbit BB Double Block w/ Becket | Competitor |
|---|---|---|
| Sheave Diameter | 1-9/16 in. | 1-1/2 in., 1-1/2 in. |
| Max. Rope Diameter | 3/8 in. | 3/8 in., 3/8 in. |
| Working Load Limit (MWL) | 1320 lb. | 1500 lb., 1300 lb. |
| Bearing System | 2-stage ball bearing | Plain bearing, Plain bearing |
| Weight | 4.6 oz. | Approx. 5.5 oz., Approx. 5 oz. |
Common Concerns Answered
Is the price of this Ronstan block significantly higher than basic alternatives?
While the initial investment may be higher than rudimentary blocks, the Ronstan Series 40 Orbit BB Double Block's superior 2-stage ball bearing system, class-leading load ratings, and robust construction provide long-term performance and reliability benefits that justify the cost for serious sailors.
What makes this block stand out from simpler pulley systems?
The primary differentiator is the advanced 2-stage ball bearing system, which drastically reduces friction compared to plain bearing systems found in many basic blocks, leading to more efficient load handling and sail control.
How does the cleating mechanism perform under load?
The carbon-reinforced C-Cleat™ is engineered for secure rope holding with low entry and exit efforts, ensuring reliable performance even when managing high loads on control lines like vangs or halyards.
Frequently Asked Questions
What is the maximum rope diameter this Ronstan Series 40 Orbit BB Double Block can accommodate?
The Ronstan Series 40 Orbit BB Double Block is designed to accommodate a maximum rope diameter of 3/8 inch.
What is the working load limit (MWL) for the Ronstan Series 40 Orbit BB Double Block?
The Working Load Limit (MWL) for the Ronstan Series 40 Orbit BB Double Block is 1320 lb.
What are the primary applications for the Ronstan Series 40 Orbit BB Double Block?
This block is ideal for mainsail, spinnaker, halyard, vang, backstay, and general control line systems on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft), as well as larger cruising boats up to 9m (30ft).
What type of bearing system does the Ronstan Series 40 Orbit BB Double Block use?
The Ronstan Series 40 Orbit BB Double Block utilizes a low-friction, 2-stage ball bearing system for optimal performance and efficiency.
What is the weight of the Ronstan Series 40 Orbit BB Double Block?
The Ronstan Series 40 Orbit BB Double Block weighs 4.6 oz.
