Description
Harken 40mm Carbo Block w/Swivel & Bracket | Boat Supply Store
Engineered for demanding sail control, this Harken 40mm Carbo Block provides a robust solution for managing lines up to 10mm (3/8 inch) diameter. Its 40mm sheave diameter and 220 kg (485 lb) maximum working load ensure reliable performance under high stress, making it essential for precise sail trim on a variety of vessels, from performance dinghies to offshore cruisers. The integrated swivel and bracket allow for versatile mounting configurations to optimize lead angles and minimize chafe in complex rigging systems.
Key Features
- Lightweight Carbo Air Construction for reduced rig weight
- Strong 220 kg (485 lb) working load for safe sail control
- Low-friction performance for effortless line adjustment
- Versatile single block with swivel and bracket mounting
- 40mm Sheave Diameter accommodates essential control lines
- Durable construction built for marine environments
- Easy to integrate into existing rigging
- Efficient sail trimming and load distribution
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 40mm (1-9/16 inch) |
| Maximum Line Diameter | 10mm (3/8 inch) |
| Maximum Working Load | 220 kg (485 lb) |
| Block Type | Single with Swivel and Bracket |
| Construction | Carbo Air |
Who This Is For
Cruising and racing sailors requiring a dependable, lightweight single block with integrated swivel and bracket for diverse rigging applications. Ideal for those seeking efficient and reliable sail control solutions.
How It Compares
| Feature | Harken 40mm Carbo Block w/Swivel & Bracket | Ronstan Series 40 Orbit Block Single Swivel |
|---|---|---|
| Sheave Diameter (mm) | 40 | 40 |
| Maximum Line Diameter (mm) | 10 | 10 |
| Maximum Working Load (kg) | 220 | 200 |
| Block Type | Single with Swivel & Bracket | Single with Swivel |
Common Concerns Answered
Is the swivel mechanism easy to operate?
While generally smooth, some users report initial stiffness in the swivel. This typically resolves with use or can be addressed with light lubrication suitable for marine environments.
How does this block hold up to prolonged sun exposure?
Carbo Air construction is designed for UV resistance, but like all marine plastics, extended periods of intense direct sunlight without proper maintenance can lead to degradation. Regular inspection and cleaning are recommended.
Is the price a barrier for this quality?
The initial investment is competitive for its performance class. The long-term durability, lightweight strength, and low-friction operation of Harken's Carbo blocks deliver significant value, justifying the cost for demanding sailing conditions.
Frequently Asked Questions
What is the maximum line diameter this Harken block can handle?
This Harken block is designed to accommodate lines up to 10mm (3/8 inch) in diameter.
What is the working load limit for the Harken 40mm Carbo Block?
The maximum working load limit for this block is 220 kg (485 lb).
Is this block suitable for offshore sailing?
Yes, with its robust construction and high working load, this block is suitable for various offshore sailing applications where reliable sail control is critical.
What are the advantages of Carbo Air blocks compared to other Harken lines?
Carbo Air blocks are exceptionally lightweight due to their unique construction, offering excellent strength-to-weight ratios. This reduces rig tension and improves overall boat performance compared to heavier block materials.
Can this block be used with Dyneema or Spectra lines?
Yes, the 40mm sheave is designed to be compatible with modern high-strength lines such as Dyneema and Spectra, ensuring low friction and efficient load transfer.
