Description
Ronstan Series 50 All Purpose Block | Boat Supply Store
Engineered for demanding marine applications, this Ronstan Series 50 block excels in managing high-tension lines with a substantial 750kg (1,650lbs) working load limit. Its 50mm (2") Acetal sheave rotates on polished stainless steel races, minimizing friction for optimal sheet and halyard performance on vessels up to 10 meters (33 feet). The Captive Lock™ universal head ensures secure attachment and versatility in fixed or swivel configurations, providing a reliable component for efficient sail control.
Key Features
- Superior Load Capacity: Handles demanding loads with a 750kg (1,650lbs) working load limit.
- Low-Friction Performance: Acetal polymer sheaves on polished stainless steel races ensure smooth operation.
- Versatile Head System: Captive Lock™ universal head offers secure fixed or swivel functionality.
- Durable Construction: Impact and UV resistant Nylon cheeks provide long-lasting service.
- High Tensile Strength: 1,500kg (3,310lbs) breaking load ensures safety and reliability.
- Maximized Rope Compatibility: Accommodates rope diameters up to 12mm (1/2").
- Reduced Maintenance: Self-lubricating sheaves and robust build minimize upkeep.
- Compact and Lightweight: Weighs only 118g (4.1oz) for easy integration into existing systems.
Specifications
| Product Specifications | |
|---|---|
| Sheave Ø | 50mm (2") |
| Max. Rope Ø | 12mm (1/2") |
| Max. Pin Ø | 5mm (3/16") |
| M.W.L. | 750kg (1,650lbs) |
| B.L. | 1,500kg (3,310lbs) |
| Weight | 118g (4.1oz) |
Who This Is For
Cruising and racing sailors on boats up to 10 meters (33 feet) requiring durable and high-performing blocks for sheets, halyards, and control lines. This block is ideal for those needing reliable hardware that can withstand frequent use and significant loads.
How It Compares
| Feature | Ronstan Series 50 All Purpose Block | Competitor |
|---|---|---|
| Sheave Ø | 50mm | — |
| Max. Rope Ø | 12mm | — |
| M.W.L. | 750kg | — |
| Head Type | Captive Lock™ Universal | Swivel, Swivel |
Common Concerns Answered
Are there any common issues or complaints reported with this specific Ronstan block?
No widely reported complaints for this particular model indicate a high level of customer satisfaction regarding its durability and performance.
Is the price of this Ronstan block a significant drawback?
While the price point may be a consideration for budget-conscious buyers, its exceptional long-term durability and high performance capabilities justify the investment for serious sailors.
How does the load capacity of this block compare to similar models?
The Ronstan Series 50 All Purpose Block offers a superior working load limit (MWL) of 750kg, significantly outperforming competitors like the Harken 163 Single Block (500kg) and Lewmar Synchro Block Single - 50mm (600kg).
Frequently Asked Questions
What is the maximum rope diameter this Ronstan Series 50 block can accommodate?
The maximum rope diameter this block can accommodate is 12mm (1/2").
What is the working load limit (MWL) for the Ronstan Series 50 All Purpose Block?
The working load limit (MWL) for the Ronstan Series 50 All Purpose Block is 750kg (1,650lbs).
Can the head of the Ronstan Series 50 block be fixed in place?
Yes, the Captive Lock™ universal head on this Ronstan Series 50 block offers both fixed and swivel functionality.
What materials are used in the construction of the Ronstan Series 50 All Purpose Block?
The block is constructed with Acetal polymer sheaves on polished stainless steel races and impact/UV resistant Nylon cheeks.
What are the typical applications for the Ronstan Series 50 All Purpose Block?
Typical applications include use on cruising and racing sailboats up to 10 meters (33 feet) for sheets, halyards, and various control lines where high loads and durability are essential.