Description
Harken 40mm Carbo Air Block Swivel | Boat Supply Store
For efficient and safe sail handling on any vessel, this block system negates excessive friction. Its 40mm sheave, crafted from high-strength Carbo Air composite, supports a maximum line diameter of 10mm and handles a working load of 220kg. It's an indispensable component for optimizing trim on dinghies or cruising yachts traversing coastal waters.
Key Features
- Lightweight and strong Carbo Air construction minimizes rig weight.
- Low-friction sheave ensures smooth and efficient operation under load.
- Compact and reliable design conserves space on deck.
- High working loads (220kg MWL) provide confidence in demanding conditions.
- Swiveling head offers versatile rigging angles for optimal lead.
- Durable composite materials resist corrosion and UV degradation.
- Affordable performance compared to heavier, metal-sheave blocks.
- Easy integration into existing running rigging systems.
Specifications
| Product Specifications | |
|---|---|
| Sheave | 40mm / 1-9/16in |
| Length | 86mm / 3-3/8in |
| Weight | 44g / 1.6oz |
| Shackle pin | 4mm / 5/32in |
| Maximum line | 10mm / 3/8in |
| Maximum working load | 220kg / 485lb |
| Breaking load | 735kg / 1620lb |
Who This Is For
Sailors of all levels requiring lightweight, high-performance blocks for their running rigging. Ideal for optimizing sail trim efficiency on dinghies or cruising yachts.
How It Compares
| Feature | Harken 40mm Carbo Air Block Swivel | Competitor |
|---|---|---|
| Sheave Diameter | 40mm | — |
| Weight | 44g | 55g, 50g |
| Maximum Working Load | 220kg | — |
| Maximum Line Diameter | 10mm | — |
Common Concerns Answered
Does the swivel mechanism require specific maintenance?
To ensure longevity, especially in saltwater, it is advisable to rinse the swivel with fresh water and lubricate it periodically. Some users have noted stiffness if maintenance is neglected.
Is the composite construction robust enough for heavy-duty use?
While constructed from lightweight composite, this block is engineered for significant loads up to 220kg. For extremely heavy-duty applications exceeding these specifications, heavier-duty blocks might be considered, but this block offers an excellent strength-to-weight ratio for its class.
How does this block compare in durability to all-metal alternatives?
The Carbo Air composite offers excellent durability and resistance to corrosion, often outperforming some metal components in marine environments while remaining significantly lighter. It is rated for substantial loads, offering reliable performance for its intended use.
Frequently Asked Questions
What is the maximum line diameter this Harken block can accommodate?
The Harken 40mm Carbo Air Block is designed to accommodate a maximum line diameter of 10mm (3/8 inch).
What is the working load limit for the Harken 40mm Carbo Air Block?
The maximum working load for this block is 220kg (485lb).
How much does the Harken 40mm Carbo Air Block weigh?
The Harken 40mm Carbo Air Block weighs only 44g (1.6oz).
What are the dimensions of the Harken 40mm Carbo Air Block?
The block has a sheave diameter of 40mm (1-9/16 inch) and an overall length of 86mm (3-3/8 inch).
Is this block suitable for high-load applications?
Yes, with a maximum working load of 220kg, this block is suitable for many high-load applications in sailing, including mainsheet, vang, and halyard systems on smaller to mid-sized boats.
