Description
Barton Marine 55mm Ratchet Block | Boat Supply Store
This block effectively manages loaded lines by engaging a self-tailing ratchet mechanism, providing secure holding power crucial for precise sail trim. Constructed with a UV-protected composite body and marine-grade 316 stainless steel internals, it ensures durability in harsh marine environments. The 55mm anodized aluminum sheave, rated for a 661 lb Safe Working Load and a 2,646 lb Breaking Load, minimizes friction and wear on lines up to 10mm. It is specifically engineered for high-performance applications on dinghies, keelboats, and yachts up to 30 feet.
Key Features
- Secure Hold Ratchet mechanism prevents line slippage under load.
- Low Friction 12-faced anodized aluminum sheave ensures smooth operation.
- Durable Construction UV-protected composite body resists degradation.
- Corrosion Resistant Marine grade 316 stainless steel internal components.
- Versatile Control Locking swivel head lever offers added rigging flexibility.
- High Load Capacity Rated for 661 lb Safe Working Load.
- Line Compatibility Accommodates ropes up to 3/8" (10 mm).
- Compact Design Lightweight at only 4.8 oz (135 grams).
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 55mm (2-3/16") |
| Safe Working Load | 661 lb (300 kg) |
| Breaking Load | 2,646 lb (1,200 kg) |
| Maximum Rope Diameter | 3/8" (10 mm) |
| Weight | 4.8 oz (135 grams) |
| Body Material | UV-protected composite (high-density nylon & glass fiber reinforced polymer) |
| Internal Components | Marine grade 316 stainless steel |
| Sheave Type | 12-faced, anodized aluminum |
| Swivel Head Lock | Integrated stainless steel lever |
Who This Is For
Dinghy sailors, keelboat sailors, and small yacht owners (up to 30 feet) seeking a robust and high-performance ratchet block for mainsheet or spinnaker systems. Ideal for those who require both strong holding power and controlled line easing in demanding sailing conditions.
How It Compares
| Feature | Barton Marine 55mm Ratchet Block | Competitor |
|---|---|---|
| Sheave Diameter | 55mm (2-3/16") | — |
| Safe Working Load | 661 lb (300 kg) | 1000 lb |
| Breaking Load | 2,646 lb (1,200 kg) | 3,000 lb |
| Max Rope Diameter | 3/8" (10 mm) | — |
| Weight | 4.8 oz (135 grams) | 130g |
| Locking Swivel Head Lever | Yes | No |
| Body Material | UV-protected composite (high-density nylon & glass fiber reinforced polymer) | High-strength, UV-stabilized polymer |
| Internal Components | Marine grade 316 stainless steel | Stainless steel |
| Sheave Type | 12-faced, anodized aluminum | Aluminum |
Common Concerns Answered
What is the primary concern regarding the long-term functionality of this block?
While generally reliable, reports indicate that the ratchet mechanism can become stiff over time if not subjected to regular maintenance and cleaning. Proper rinsing after saltwater use and periodic lubrication are recommended to ensure sustained performance.
Is the sheave diameter sufficient for all sailing applications?
The 55mm sheave diameter is optimal for the specified rope range (up to 10mm) and boat sizes. For exceptionally heavy loads or significantly larger diameter ropes, users might consider blocks with larger sheave diameters, though this model is engineered for effective use within its specified limits.
Why is the initial cost higher than basic blocks?
The elevated price reflects the premium materials, including marine-grade 316 stainless steel internals and a UV-protected composite body, combined with the advanced 12-faced anodized aluminum sheave and the integrated locking swivel head lever. These components contribute to superior durability, lower friction, and enhanced functionality crucial for demanding sailing scenarios.
Frequently Asked Questions
What is the maximum load this block can safely handle during operation?
The Barton Marine Ratchet Block - 55mm has a Safe Working Load (SWL) of 661 lb (300 kg), ensuring secure handling of loaded lines during sailing activities.
What is the ultimate load capacity of the block before failure?
The Breaking Load for this block is 2,646 lb (1,200 kg), indicating its robust construction and ability to withstand significant forces.
What is the largest diameter rope that can be effectively used with this block?
This ratchet block is designed to accommodate ropes with a maximum diameter of 3/8" (10 mm).
Can the swivel head on this block be locked in place?
Yes, the Barton Marine Ratchet Block - 55mm features an integrated stainless steel lever that allows you to lock the swivel head, providing enhanced control and stability.
What specific sailing scenarios is this block best suited for?
This block is ideal for mainsheet and spinnaker applications on dinghies, keelboats, and small yachts up to 30 feet, where precise sail trim and secure line holding are essential.
