Description
Ronstan Series 40 Orbit BB Sheave | Boat Supply Store
For sailors demanding optimal control line efficiency, this Ronstan Series 40 Orbit BB Sheave offers superior performance through its advanced 2-stage ball bearing system, drastically reducing friction even under high loads. Its 40mm sheave accommodates lines up to 10mm with a robust 400kg Working Load Limit (MWL). This precision engineering ensures consistently smooth operation, translating directly to refined sail trim and enhanced boat handling during demanding offshore passages or competitive regattas.
Key Features
- Achieve ultra-low friction with the innovative 2-stage ball bearing system.
- Ensure consistent performance across the full load range with the secondary full-contact bearing.
- Benefit from a captive ball bearing design for enhanced durability and reliability.
- Optimize sail trim with a 40mm sheave diameter for efficient line movement.
- Handle significant loads with a Maximum Working Load Limit (MWL) of 400kg (880lbs).
- Integrate seamlessly with running rigging up to 10mm (3/8") in diameter.
- Experience minimal friction for precise control line adjustments.
- Maintain lightweight efficiency at only 30g (1.1oz) for reduced system weight.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 40mm (1-9/16") |
| Maximum Rope Diameter | 10mm (3/8") |
| Maximum Working Load Limit (MWL) | 400kg (880lbs) |
| Weight | 30g (1.1oz) |
| Bearing System | 2-stage ball bearing with captive BB |
Who This Is For
Sailors and marine enthusiasts requiring high-performance, low-friction blocks to optimize their running rigging and control lines. This sheave is ideal for those seeking to enhance sail trim precision and overall boat handling efficiency in demanding sailing conditions.
How It Compares
| Feature | Ronstan Series 40 Orbit BB Sheave | Competitor |
|---|---|---|
| Sheave Diameter | 40mm | — |
| Maximum Rope Diameter | 10mm | — |
| Maximum Working Load Limit (MWL) | 400kg (880lbs) | — |
| Bearing System | 2-stage ball bearing | Carbo Ratchomatic, Synchro |
| Weight | 30g (1.1oz) | Approx. 60g, Approx. 50g |
Common Concerns Answered
Are there common issues reported with the Ronstan Series 40 Orbit BB Sheave?
This specific model has no widely reported issues, indicating high user satisfaction with its performance and durability. Occasional user error in selecting the correct block size for their application is the primary concern noted, emphasizing the importance of verifying specifications against rigging requirements.
Is the Ronstan Series 40 Orbit BB Sheave suitable for heavy offshore use?
Yes, with a Maximum Working Load Limit (MWL) of 400kg (880lbs) and its advanced 2-stage ball bearing system designed for consistent low friction across the full load range, this sheave is engineered for demanding sailing conditions and offshore applications.
Is the price of the Ronstan Series 40 Orbit BB Sheave justified?
While the price may be a consideration for budget-conscious sailors, the superior friction reduction and consistent performance offered by its advanced bearing system provide significant advantages for serious racers and cruisers. These performance benefits often justify the investment for optimizing boat handling and sail control.
Frequently Asked Questions
What is the maximum rope diameter this Ronstan Series 40 Orbit BB Sheave can accommodate?
The Ronstan Series 40 Orbit BB Sheave can accommodate a maximum rope diameter of 10mm (3/8").
What is the working load limit (MWL) for the Ronstan Series 40 Orbit BB Sheave?
The Maximum Working Load Limit (MWL) for the Ronstan Series 40 Orbit BB Sheave is 400kg (880lbs).
What are the dimensions of the sheave on the Ronstan Series 40 Orbit BB Sheave?
The sheave diameter on the Ronstan Series 40 Orbit BB Sheave is 40mm (1-9/16").
What makes the Ronstan Series 40 Orbit BB Sheave's bearing system unique?
Its unique 2-stage ball bearing system provides ultra-low friction, complemented by a secondary full-contact bearing that ensures consistent low friction performance across the entire load range.
What is the weight of the Ronstan Series 40 Orbit BB Sheave?
The Ronstan Series 40 Orbit BB Sheave weighs 30g (1.1oz).
