Description
Harken 40mm Carbo Ratchet Block w/Swivel & Becket | Boat Supply Store
For dinghy sailors and small keelboat crews managing loaded lines, this Harken block provides a controlled release and substantial holding power. Its 40mm Carbo sheave ensures low-friction performance, rated for a 136 kg (300 lb) maximum working load. The integrated on/off ratchet mechanism allows for easy adjustment and release of line tension, crucial for sail trim adjustments in dynamic conditions, accommodating lines up to 10mm (3/8 inch) diameter.
Key Features
- Effortless Line Control with an integrated on/off ratchet switch
- Smooth Operation via a 40mm Carbo sheave
- Versatile Rigging with a swiveling head
- Secure Attachment Point provided by the integrated becket
- Lightweight and Durable construction utilizing Harken's renowned Carbo materials
- High Holding Power for confidence under load
- Controlled Easing to precisely manage line tension
- Compact Size suitable for a variety of applications
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 40 mm (1-9/16 inch) |
| Maximum Line Diameter | 10 mm (3/8 inch) |
| Maximum Working Load | 136 kg (300 lb) |
| Ratchet Function | On/Off Switch |
| Swivel | Yes |
| Becket | Yes |
| Brand | Harken |
| SKU | CWR84450 |
| MPN | 2609 |
Who This Is For
Sailors of dinghies, small keelboats, and cruising yachts who require dependable and lightweight line control with adjustable holding power. This block is ideal for those who need to hand-hold loaded lines while benefiting from the convenience of a ratcheting mechanism.
How It Compares
| Feature | Harken 40mm Carbo Ratchet Block w/Swivel & Becket | RF41100 |
|---|---|---|
| Sheave Diameter | 40 mm | — |
| Max Line Diameter | 10 mm | — |
| Maximum Working Load (lb) | 300 lb | 2200 lb |
| Ratchet Function | Yes (On/Off Switch) | No |
| Swivel | Yes | Yes |
| Becket | Yes | Yes |
Common Concerns Answered
Is the working load limit sufficient for heavier applications?
The 136 kg (300 lb) maximum working load is suitable for typical dinghy and small keelboat applications. For significantly higher load requirements, consider blocks with a greater load rating, though they may not feature a ratchet mechanism in this size class.
Can the ratchet be difficult to engage or disengage?
Some users report initial stiffness with the ratchet switch. This is common in new blocks and typically resolves with use. The on/off function is designed for clear engagement and disengagement once broken in.
Why is the working load limit lower than some competitors?
The primary distinction of this Harken block is its integrated ratchet system. This specialized feature prioritizes controlled line tension and ease of use, which can influence the maximum working load compared to simpler, non-ratcheting blocks of the same sheave diameter.
Frequently Asked Questions
What is the maximum line diameter this Harken ratchet block can handle?
This Harken 40mm Carbo Single Ratchet Block is designed to accommodate line diameters up to 10mm (3/8 inch).
What is the working load limit for the Harken 40mm Carbo Single Ratchet Block?
The maximum working load for this block is rated at 136 kg (300 lb).
Does this Harken block have an on/off switch for the ratchet mechanism?
Yes, this Harken block features an integrated on/off switch for the ratchet mechanism, allowing for easy engagement and disengagement.
What are the dimensions of the sheave on this Harken block?
The sheave diameter is 40mm, which is equivalent to 1-9/16 inches.
Can this Harken block be used with larger diameter lines?
No, this block is optimized for lines up to 10mm (3/8 inch) in diameter. Using larger lines will exceed the design parameters and potentially compromise performance and safety.
