Description
Ronstan Series 40 Orbit BB Cheek Block | Boat Supply Store
This Ronstan Series 40 Orbit BB Cheek Block is engineered for demanding control line applications on vessels up to 8 meters. It achieves exceptional load-bearing capabilities with a Working Load Limit (M.W.L.) of 880 lb. and a Breaking Load (B.L.) of 1760 lb., facilitated by its lightweight, toughened glass fiber reinforced nylon cheeks and a low-friction 2-stage ball bearing system. Integrated with a carbon-reinforced C-Cleat™ and adjustable stainless steel cleat arms, it ensures secure and reliable rope management for mainsheet or spinnaker systems on dinghies and sportsboats.
Key Features
- Class-leading dynamic and static load ratings for superior performance.
- Lightweight toughened glass fiber reinforced nylon cheeks for durability.
- Ultra-low friction 2-stage ball bearing system for effortless sheeting.
- Secure rope holding via carbon-reinforced C-Cleat™.
- Adjustable cleat arms for customized rope angles.
- High load capacity suitable for demanding applications.
- Compact design minimizes deck clutter.
- Reliable operation in all marine conditions.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 1-9/16 in. |
| Max. Rope Diameter | 3/8 in. |
| Working Load Limit (M.W.L.) | 880 lb. |
| Breaking Load (B.L.) | 1760 lb. |
| Weight | 1.2 oz. |
Who This Is For
Sailors of dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft) for mainsheet and spinnaker systems, and sailors of boats up to 9m (30ft) for halyard, vang, and backstay applications. Also suitable for control line applications on larger yachts.
How It Compares
| Feature | Ronstan Series 40 Orbit BB Cheek Block | Competitor |
|---|---|---|
| Sheave Diameter | 1-9/16 in. | 1-1/2 in., 40mm |
| Max. Rope Diameter | 3/8 in. | 3/8 in., 10mm |
| Working Load Limit (M.W.L.) | 880 lb. | 700 lb., approx. 1653 lb. |
| Breaking Load (B.L.) | 1760 lb. | 1400 lb., approx. 3307 lb. |
| Weight | 1.2 oz. | null, approx. 3-4 oz. |
| Integrated Cleat | Yes (C-Cleat™) | No, No |
| Cheek Material | Toughened glass fiber reinforced nylon | Nylon, Composite |
Common Concerns Answered
How do I adjust the cleat on the Ronstan Series 40 Orbit BB Cheek Block?
The cleat adjustment mechanism, while offering secure rope holding, may require firm pressure initially. Consult the product manual for detailed instructions on adjusting the cleat arms to your preferred angle. This ensures optimal rope management and performance.
Is this block suitable for extremely heavy-duty applications?
While this block offers class-leading load ratings for its size, its lightweight construction prioritizes efficiency for its intended applications. For vessels requiring significantly higher load ratings, larger block sizes or specialized heavy-duty hardware may be more appropriate.
The price is higher than some other blocks. Is it worth the investment?
The Ronstan Series 40 Orbit BB Cheek Block provides a unique combination of advanced features, including a 2-stage ball bearing system and an integrated C-Cleat™, delivering superior strength-to-weight ratio and performance. This justifies the investment for sailors prioritizing reliability and efficiency in their rigging.
Frequently Asked Questions
What is the maximum rope diameter this block can accommodate?
The Ronstan Series 40 Orbit BB Cheek Block can accommodate a maximum rope diameter of 3/8 inch.
What are the working and breaking load limits for the Ronstan Series 40 Orbit BB Cheek Block?
The Working Load Limit (M.W.L.) is 880 lb., and the Breaking Load (B.L.) is 1760 lb.
What applications is this block best suited for?
This block is best suited for mainsheet and spinnaker systems on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft), and for halyard, vang, and backstay applications on boats up to 9m (30ft). It's also ideal for control line applications on larger yachts.
What makes the ball-bearing system in this block unique?
The block features a highly efficient 2-stage ball bearing system designed to minimize friction, ensuring smooth operation even under significant load.
Can the cleat arm angle be adjusted on this block?
Yes, the stainless steel cleat arms are adjustable to allow for optimal rope angle and secure holding.
