Description
Harken 40mm Carbo Ratchet Block w/Swivel | Boat Supply Store
Engineered for precise control of loaded running rigging, this Harken block excels in applications requiring hand-holding of significant loads, such as mainsheets on dinghies or vang systems on small keelboats. Its 40mm Carbo sheave ensures low-friction operation, while the single ratchet mechanism provides secure holding power and controlled easing, with a maximum line diameter of 6mm (1/4 inch). The integrated cam cleat offers swift and reliable line adjustments, complementing the versatile swiveling becket for adaptable rigging configurations up to a 68 kg (150 lb) working load.
Key Features
- Low Friction with 40mm Carbo sheave for efficient line movement.
- Secure Holding & Controlled Easing via single ratchet mechanism.
- Versatile Attachment enabled by the swiveling becket.
- Secure Line Management with integrated cam cleat.
- Lightweight & Strong construction from Carbo composite.
- High Performance for loaded lines on dinghies and small keelboats.
- Precise Adjustments facilitated by the cam cleat.
- Reliable Operation for demanding sailing conditions.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 40mm |
| Sheave Diameter (Inches) | 1-9/16 inch |
| Maximum Line Diameter | 6mm (1/4 inch) |
| Maximum Working Load | 68 kg (150 lb) |
Who This Is For
Sailors operating dinghies, small keelboats, and cruising yachts demanding precise control over loaded lines like mainsheets or vangs. It is ideal for those who require the ability to hold lines by hand while benefiting from secure, adjustable cleats.
How It Compares
| Feature | Harken 40mm Carbo Ratchet Block w/Swivel | Competitor |
|---|---|---|
| Sheave Diameter | 40mm | — |
| Max Line Diameter | 6mm (1/4 in) | — |
| Max Working Load (kg) | 68 kg | — |
| Ratchet Mechanism | Single Ratchet | Ratchet, Ratchet |
| Becket Type | Swivel Becket | Swivel Becket, Swivel Becket |
| Cleat Type | Cam Cleat | Cam Cleat, Cam Cleat |
Common Concerns Answered
Is the ratchet mechanism easy to engage?
While generally effective, some users report the ratchet engagement can feel stiff during initial use, requiring a brief break-in period.
Will the cam cleat secure very thin or slippery lines?
The cam cleat is designed for optimal grip on lines within the specified diameter range. For extremely thin or slippery lines, additional care in tensioning may be required, as occasional reports suggest reduced grip effectiveness in such scenarios.
Is the price point higher than comparable blocks?
This Harken block is positioned at a premium price, reflecting its advanced Carbo construction and integrated features. Budget-conscious sailors may find lower-priced alternatives, but this model offers specific performance advantages.
Frequently Asked Questions
What is the maximum line diameter this Harken block can handle?
This Harken 40mm Carbo Single Ratchet Block is designed to accommodate a maximum line diameter of 6mm (1/4 inch).
What is the working load limit for the Harken 40mm Carbo Single Ratchet Block?
The maximum working load limit for this block is 68 kg (150 lb).
How does the ratchet mechanism on this block work?
The single ratchet mechanism engages with the line, providing a gripping force to hold loads and prevent accidental slippage. It allows for controlled easing of the line when manual pressure is released or adjusted.
Can this block be used for mainsheets or jib sheets?
Yes, this block is highly suitable for mainsheets on dinghies and small keelboats, as well as jib sheets and vang systems where hand-holding and controlled easing are beneficial.
What is the sheave diameter of this Harken block?
The sheave diameter of this Harken block is 40mm, which is equivalent to 1-9/16 inches.
