Description
Ronstan Series 40 Orbit BB Quin Block w/Swivel Shackle | Boat Supply Store
This Ronstan Series 40 Orbit BB Quin Block is engineered to address the critical need for reliable, high-performance load management in demanding sailing applications. It boasts class-leading dynamic and static load ratings for its size class, achieving a Maximum Working Load (MWL) of 1320 lb and a Breaking Load (B.L.) of 2650 lb. Its innovative 2-stage ball bearing system minimizes friction, facilitating smoother operation for crucial control lines on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft).
Key Features
- Class-Leading Load Ratings for ultimate strength and reliability.
- Lightweight, Strong Construction with toughened glass fiber reinforced nylon cheeks.
- Superior Low Friction via the 2-stage ball bearing system.
- Secure Rope Holding with a carbon-reinforced C-Cleat™.
- Adjustable Cleat Arms to optimize cleating angle for user preference.
- Versatile Swivel Shackle Head for easy attachment.
- Optimized Performance for demanding sailing conditions.
- Durable Design for long-term use in marine environments.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 1-9/16 in. |
| Max Rope Diameter | 3/8 in. |
| Pin Diameter | 5/32" |
| Maximum Working Load (MWL) | 1320 lb |
| Breaking Load (B.L.) | 2650 lb |
| Weight | 8.5 oz |
Who This Is For
Sailors and boaters managing critical control lines on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft). This block is ideal for applications on boats up to 9m (30ft) requiring high-performance halyard, vang, backstay, or control line systems.
How It Compares
| Feature | Ronstan Series 40 Orbit BB Quin Block w/Swivel Shackle | Competitor |
|---|---|---|
| Sheave Diameter | 1-9/16 in. | — |
| Max Rope Diameter | 3/8 in. | — |
| Maximum Working Load (MWL) | 1320 lb | 1100 lb, 1000 lb |
| Weight | 8.5 oz | 4.6 oz, 5.5 oz |
| Bearing System | 2-stage ball bearing | Carbo-Ratch (likely composite bearings), Synchro |
| Cleat Type | Carbon-reinforced C-Cleat™ | Ratch, Synchro |
Common Concerns Answered
Is this block too expensive for general use?
While the initial investment for the Ronstan Series 40 Orbit BB Quin Block may be higher than basic utility blocks, its superior load ratings, low-friction bearing system, and durable construction provide significant long-term performance benefits and reliability, justifying the cost for performance-oriented sailors.
Is the weight a concern for ultra-lightweight boats?
The weight is optimized for its robust load-handling capabilities. For applications where every ounce is critically managed on ultra-lightweight craft, alternative solutions might be considered, but this block offers an exceptional balance of strength and weight for its performance class.
Are there any drawbacks to the C-Cleat™ system?
The carbon-reinforced C-Cleat™ offers exceptional holding power. While generally praised for its secure grip, users who prefer a more traditional ratchet or cam cleat mechanism might need to adjust their expectations to this advanced cleating solution.
Frequently Asked Questions
What is the maximum rope diameter this Ronstan Series 40 Orbit BB Quin Block can accommodate?
This Ronstan Series 40 Orbit BB Quin Block is designed to accommodate a maximum rope diameter of 3/8 inches.
What is the working load limit (MWL) for the Ronstan Series 40 Orbit BB Quin Block?
The Maximum Working Load (MWL) for the Ronstan Series 40 Orbit BB Quin Block is 1320 lb.
What are the primary applications for the Ronstan Series 40 Orbit BB Quin Block?
Primary applications include high-performance halyard, vang, backstay, or control line systems on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft), and auxiliary systems on boats up to 9m (30ft).
How does the 2-stage ball bearing system in this block reduce friction?
The 2-stage ball bearing system utilizes multiple stages of precision bearings to distribute the load effectively, minimizing contact points and rotational resistance, thereby significantly reducing friction for smoother operation under load.
Can the cleat arms on this block be adjusted?
Yes, the cleat arms on this Ronstan Series 40 Orbit BB Quin Block are adjustable, allowing users to set the preferred cleating angle for optimal ergonomic performance.
