Description
Ronstan Series 50 Double Block | Boat Supply Store
Engineered for strenuous marine applications, this Ronstan Series 50 All Purpose Double Block excels in demanding sheet, halyard, and control line management. It features 2-inch (50mm) self-lubricating Acetal polymer sheaves that minimize friction and wear, ensuring consistent performance and extended service life. With a substantial 2200 lb (1000 kg) working load limit and robust Grade 316 stainless steel construction, this block is a reliable component for cruising or racing yachts up to 33ft.
Key Features
- Self-lubricating Acetal polymer sheaves for reduced friction and extended lifespan.
- Polished stainless steel races ensure smooth sheave rotation under high loads.
- Grade 316 stainless steel load strap provides superior corrosion resistance and strength.
- Impact and UV resistant, fiber-reinforced Nylon cheeks offer exceptional durability.
- 360-degree rotation via swivel shackle head for optimal line lead.
- Slotted pin shackle facilitates secure and convenient attachment.
- High working load limit of 2200 lb (1000 kg) for demanding rigging requirements.
- Low maintenance design minimizes upkeep for busy mariners.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 2" (50mm) |
| Max Rope Diameter | 1/2" (12mm) |
| Working Load Limit | 2200 lb (1000 kg) |
| Breaking Load | 4410 lb (2000 kg) |
| Load Strap Material | Grade 316 stainless steel |
| Cheek Material | Impact and UV resistant, fiber reinforced Nylon |
| Sheave Material | Acetal polymer |
| Weight | 9.0 oz (255g) |
Who This Is For
Cruising and racing sailors who require a durable, low-maintenance, and high-performance double block for sheets, halyards, and control lines. Ideal for vessels up to 33ft (10m) seeking reliable rigging solutions.
How It Compares
| Feature | Ronstan Series 50 Double Block | Competitor |
|---|---|---|
| Sheave Diameter | 2" (50mm) | 1.5" |
| Max Rope Diameter | 1/2" (12mm) | 3/8" |
| Maximum Working Load | 2200 lb (1000 kg) | 1500 lb |
| Sheave Material | Acetal polymer | Nylon |
| Cheek Material | Fiber reinforced Nylon | Nylon |
Common Concerns Answered
Are there any common complaints about the Ronstan Series 50 All Purpose Block - Double?
No explicit complaints are noted in product descriptions or common reviews for this specific model. While extremely durable, extended heavy use could eventually lead to wear, as is typical with all mechanical components.
Is the Ronstan Series 50 All Purpose Block - Double a good long-term investment?
Yes, the investment in this block is justified by its superior construction, high working load limits, and minimal maintenance requirements, ensuring reliable performance for years of demanding sail control.
How does the price compare to similar blocks?
While the initial price may be a consideration, its robust build quality, higher working load capacity compared to some competitors, and the longevity provided by its materials offer significant value. The price range is competitive for its performance class.
Frequently Asked Questions
What is the maximum rope diameter this Ronstan Series 50 All Purpose Block can accommodate?
This Ronstan Series 50 All Purpose Block - Double is designed to accommodate a maximum rope diameter of 1/2 inch (12mm).
What is the working load limit for the Ronstan Series 50 All Purpose Block - Double?
The working load limit for this block is 2200 lb (1000 kg).
What are the typical applications for the Ronstan Series 50 All Purpose Block - Double?
Typical applications include use on sheets, halyards, vang, outhaul, and other control lines on cruising and racing sailboats up to 33ft (10m).
What materials are used in the construction of the Ronstan Series 50 All Purpose Block - Double?
Construction features self-lubricating Acetal polymer sheaves, polished stainless steel races, a Grade 316 stainless steel load strap, and impact/UV resistant fiber-reinforced Nylon cheeks.
How does the self-lubricating sheave benefit the performance of this block?
The self-lubricating Acetal polymer sheaves reduce friction during operation, leading to smoother line movement, less wear on both the sheave and the line, and ultimately, enhanced block performance and longevity.
