Description
Barton Size 5 54mm Double Pulley Block | Boat Supply Store
Engineered for the rigorous demands of larger cruising and racing yachts, this Barton Size 5 54mm double pulley block provides exceptional load-bearing capacity and operational versatility. Its robust construction features high-grade moulded side plates and marine-grade 316 stainless steel internal components, ensuring longevity in harsh marine environments. With a 54mm sheave diameter and plain bearing system, it reliably handles ropes up to 12mm (7/16) with a Safe Working Load (SWL) of 750kg (1650lbs), making it ideal for halyard or control line systems.
Key Features
- Heavy-Duty Capacity rated for a 750kg (1650lbs) SWL and 1500kg (3300lbs) break load.
- Versatile Swivel Head with an integrated becket for secure load attachment and easy orientation.
- Durable Construction utilizes high-grade moulded side plates and marine-grade 316 stainless steel for critical load-carrying components.
- Optimal Rope Handling supports up to 12mm (7/16) diameter line, suitable for mainsheets or halyards.
- Reliable Plain Bearing System offers straightforward functionality for its specified load ranges.
- Double Sheave Configuration allows for complex purchase systems or parallel lines.
- Marine-Grade Durability built to withstand saltwater exposure and significant operational stress.
- Generous Sheave Diameter of 54mm facilitates efficient rope movement under load.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 54mm |
| Sheave Configuration | Double |
| Bearing Type | Plain Bearing |
| Head Type | Swivel with Becket |
| Max Rope Diameter | 12mm (7/16) |
| Safe Working Load (SWL) | 750kg (1650lbs) |
| Break Load | 1500kg (3300lbs) |
| Weight | 312g |
| Dimensions (LxWxH) | 155x59x58mm |
| Material | Moulded side plates, 316 Stainless Steel internal components |
Who This Is For
Sailors and boat owners operating larger cruising and racing yachts who require a robust, high-capacity pulley block. This block is particularly suited for those needing the flexibility of a swivel head combined with a becket for secure load termination on halyards or control lines.
How It Compares
| Feature | Barton Size 5 54mm Double Pulley Block | Competitor |
|---|---|---|
| Sheave Diameter | 54mm | — |
| Bearing Type | Plain Bearing | Ball Bearing, Plain Bearing |
| Block Type | Double Swivel + Becket | Swivel, Swivel + Becket |
| Max Rope Diameter | 12mm | — |
| SWL | 750kg | null, 500kg |
Common Concerns Answered
Are plain bearings adequate for all sailing applications?
Plain bearings are highly reliable and robust for many applications, particularly on larger yachts where loads are significant. While ball bearings offer marginally lower friction under very light loads or extreme high speeds, plain bearings provide excellent durability and strength for halyard, control line, and mainsheet systems where this Barton block excels.
Is the 12mm rope capacity sufficient for my large yacht?
The 12mm (7/16 inch) maximum rope diameter is substantial and rated for a Safe Working Load of 750kg, making it suitable for the primary running rigging on many cruising and racing yachts. Always verify system requirements against the block's specifications and your specific load calculations.
How does this block compare to ball bearing options?
This Barton block uses a plain bearing system, prioritizing strength and reliability for heavy-duty use. Ball bearing blocks may offer lower friction in specific scenarios, but this unit's 316 stainless steel construction and robust design ensure superior longevity and load handling for its intended applications.
Frequently Asked Questions
What is the maximum rope diameter this Barton pulley block can accommodate?
This Barton Size 5 54mm pulley block can accommodate a maximum rope diameter of 12mm (7/16 inch).
What is the Safe Working Load (SWL) for the Barton Size 5 54mm pulley block?
The Safe Working Load (SWL) for the Barton Size 5 54mm pulley block is 750kg (1650lbs).
Is this pulley block suitable for both cruising and racing yachts?
Yes, the robust construction and high SWL make this pulley block suitable for both demanding cruising and racing applications on larger yachts.
What type of bearing does the Barton Size 5 54mm pulley block use?
The Barton Size 5 54mm pulley block utilizes a plain bearing system.
Can this block be used with a mainsheet traveller system?
Yes, this block's double sheave configuration, swivel head, and becket make it highly suitable for integration into mainsheet traveller systems, providing load attachment and directional control.
