Description
Harken 57mm Quad Block Swivel Becket | Boat Supply Store
Engineered for demanding sail trim applications, this Harken block minimizes friction and maximizes efficiency under load. Its Carbo Air construction provides exceptional strength at only 1080 kg (2380 lb) working load, suitable for continuous high-stress use. The 57mm sheave accommodates lines up to 10mm (7/16 inch) for precise control on performance dinghies navigating swift currents in the Galveston Bay. This block ensures reliable, smooth operation when every adjustment counts.
Key Features
- Low-friction Carbo Air blocks ensure smooth operation
- Lightweight, strong, and reliable construction for durability
- High working loads for safe, easy trimming
- Compact design fits easily into existing rigging
- 57mm sheave diameter optimizes line control
- Accommodates up to 10mm (7/16 in) line diameter
- Maximum working load of 1080 kg (2380 lb) for safety and performance
- Swivel with center becket offers versatile rigging options
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 57mm |
| Line Diameter | Maximum 10mm (7/16 inch) |
| Maximum Working Load | 1080 kg (2380 lb) |
| Construction | Carbo Air |
| Block Type | Quad Block Swivel, Center Becket |
Who This Is For
Performance-oriented sailors, dinghy racers, and cruising sailors seeking lightweight, high-strength block systems for efficient sail trim. This block is built for those who demand optimized sail control and reliable hardware in competitive and long-distance sailing.
How It Compares
| Feature | Harken 57mm Quad Block Swivel Becket | Competitor |
|---|---|---|
| Sheave Diameter | 57 mm | — |
| Maximum Line Diameter | 10 mm | — |
| Maximum Working Load (kg) | 1080 kg | — |
| Block Material | Carbo Air | Composite, Composite |
Common Concerns Answered
What is the typical maintenance required for the swivel mechanism?
Occasional maintenance of the swivel mechanism is recommended to prevent stiffness over time. Regular rinsing with fresh water and periodic lubrication with marine-grade grease will ensure smooth, long-term operation.
Is the price justified by the performance and durability?
While this Harken block is priced at the higher end, users consistently report that the exceptional performance, superior strength-to-weight ratio, and renowned durability of Carbo Air construction fully justify the investment for serious sailors.
Can this block handle the load required for my high-performance dinghy?
With a substantial 1080 kg (2380 lb) maximum working load and lightweight Carbo Air construction, this block is specifically designed to handle the high loads and demands of performance sailing and dinghy racing.
Frequently Asked Questions
What is the maximum line diameter this Harken block can accommodate?
This Harken block can accommodate a maximum line diameter of 10mm, which is equivalent to 7/16 inch.
What is the working load limit for the Harken 57mm Quad Block Swivel?
The maximum working load limit for the Harken 57mm Quad Block Swivel is 1080 kg (2380 lb).
Are Harken Carbo Air blocks suitable for high-performance sailing applications?
Yes, Harken Carbo Air blocks are specifically engineered for high-performance sailing applications due to their lightweight construction, high strength, and low friction characteristics.
What is the sheave diameter of the Harken 57mm Quad Block Swivel?
The sheave diameter of the Harken 57mm Quad Block Swivel is 57mm, which is approximately 2 1/4 inches.
Can this block be used with larger diameter lines than 10mm (7/16 inch)?
No, this specific Harken block is rated for a maximum line diameter of 10mm (7/16 inch) to ensure optimal performance and safety under load.
