Description
Ronstan Series 25 HHL Orbit Block™ | Boat Supply Store
Engineered for demanding, high-load applications, this block offers superior strength-to-weight performance for competitive sailors and performance boat owners. Its Grade 2205 stainless steel sheave and bearing race, coupled with a 2-stage ball bearing system, ensure exceptional efficiency and durability under significant load, rated up to 880 lb working load limit (M.W.L.). Ideal for control lines on performance dinghies and small boats up to 4 meters (13ft), including applications on modern foiling craft using small-diameter lines on the Texas coast.
Key Features
- Superior Efficiency with a 2-stage ball bearing system.
- Maximum Load Capacity thanks to the High Load (HHL) variant.
- Enhanced Durability from Grade 2205 stainless steel sheave and bearing race.
- Lightweight Construction with a toughened, glass fibre reinforced nylon frame.
- Versatile Lashing for sail control lines up to 4mm (5/32").
- Easy Becket Take-Off facilitated by the hollow hub design.
- Corrosion Resistance provided by Grade 304 stainless steel ball bearings.
- Precise Control for critical lines like mainsheet and cunningham.
Specifications
| Product Specifications | |
|---|---|
| Series | 25 |
| Type | Ball Bearing HHL Lashing Orbit Block™ |
| Becket Hub Option | Yes |
| Lashing Head | Yes |
| Max. Rope diameter | 5/16" |
| M.W.L. | 880 lb |
| Sheave diameter | 1" |
| B.L. | 2650 lb |
| Weight | 1.2 oz |
| Frame/cheeks Material | Toughened, glass fibre reinforced nylon |
| HHL Sheave and bearing race Material | Grade 2205 stainless steel |
| Ball Bearings Material | Grade 304 stainless steel |
Who This Is For
Competitive sailors and owners of performance dinghies and small boats up to 4 meters (13ft) requiring high-strength, lightweight control line blocks for demanding applications. Also suitable for modern performance and foiling boats using small-diameter lines under significant load.
How It Compares
| Feature | Ronstan Series 25 HHL Orbit Block™ | Competitor |
|---|---|---|
| Sheave Diameter | 1" | — |
| Max Rope Diameter | 5/16" | 5/16" |
| Weight | 1.2 oz | 0.8 oz |
| Working Load Limit (M.W.L.) | 880 lb | null |
| Breaking Load (B.L.) | 2650 lb | null |
| Sheave Material (HHL Variant) | Grade 2205 Stainless Steel | Carbo |
| Bearing System | 2-stage ball bearing system | Ball bearing |
Common Concerns Answered
Why is this block more expensive than standard Ronstan Orbit blocks?
The Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block™ features a Grade 2205 stainless steel sheave and bearing race, offering a significantly higher load capacity and superior durability compared to standard acetal sheaves. This HHL variant is specifically engineered for applications where extreme loads are encountered, justifying the premium for enhanced performance and longevity.
Can I use this block on a larger boat?
While robust, this Series 25 block is optimized for smaller performance craft up to 4 meters (13ft). For larger vessels, consult Ronstan's product catalog for series designed to handle the commensurately higher loads. Using this block beyond its specified M.W.L. of 880 lb could lead to failure.
Are there any specific issues users report with this block?
No specific complaints are documented for the HHL variant. However, potential users should ensure they are selecting the HHL version for applications requiring its enhanced strength, as standard blocks may not provide adequate load capacity for demanding scenarios.
Frequently Asked Questions
What is the maximum rope diameter this block can accommodate?
The Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block™ is designed to accommodate a maximum rope diameter of 5/16".
What is the working load limit (WLL) for the Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block™?
The Working Load Limit (M.W.L.) for this block is 880 lb.
What are the primary applications for this block?
Primary applications include mainsheet, spinnaker sheet, cunningham, and cascading vangs on performance dinghies and small boats up to 4 meters (13ft), as well as control lines on modern performance and foiling boats.
What materials are used in the construction of the HHL sheave and bearing race?
The HHL sheave and bearing race are constructed from Grade 2205 stainless steel.
Can this block be used for high-load applications on foiling boats?
Yes, the High Load (HHL) variant with its Grade 2205 stainless steel sheave and bearing race is specifically engineered to handle the significant loads encountered on modern performance and foiling boats.
