Description
Barton Size 3 45mm Double Swivel Pulley Block | Boat Supply Store
For dinghy, dayboat, and lightweight cruiser sailors demanding a robust purchase system, this Barton Size 3 45mm pulley block offers exceptional utility. Its double swivel and becket configuration facilitates complex rigging scenarios, while the acetal sheaves ensure strength and low weight. Engineered with stainless steel frames and a fiber-glass-filled nylon body, this block supports a Safe Working Load (SWL) of 400kg for demanding applications up to 10mm rope diameter.
Key Features
- Optimal Sheave Size: 45mm diameter for efficient line handling.
- Versatile Configuration: Double swivel and becket for adaptable rigging.
- Smooth Operation: Plain bearing ensures consistent performance.
- Durable Construction: Stainless steel frames and 30% fiber-glass-filled nylon body.
- High Strength Sheaves: Acetal material for superior strength and reduced weight.
- Broad Rope Compatibility: Accommodates rope diameters up to 10mm (3/8").
- Significant Load Capacity: Rated for a Safe Working Load (SWL) of 400kg (881lbs).
- Compact Footprint: Dimensions of 118 x 46 x 47mm for space-efficient installation.
Specifications
| Product Specifications | |
|---|---|
| Sheave size | 45mm x 13mm |
| Max rope diameter | 10mm (3/8") |
| SWL | 400kg (881lbs) |
| Break load | 800kg (1763lbs) |
| Weight | 143g |
| Dimensions | 118 x 46 x 47mm |
| Frame material | Stainless steel |
| Body material | Fiber-glass-filled nylon |
| Sheave material | Acetal |
Who This Is For
Ideal for dinghy, dayboat, and lightweight cruiser sailors who require a compact, high-strength purchase system. It is particularly suited for managing mainsheets, vangs, or lead blocks where a reliable and efficient block is essential.
How It Compares
| Feature | Barton Size 3 45mm Double Swivel Pulley Block | Competitor |
|---|---|---|
| Sheave Size | 45mm | — |
| Max Rope Diameter | 10mm (3/8") | — |
| Bearing Type | Plain | Plain, Plain |
| SWL | 400kg (881lbs) | null, null |
| Weight | 143g | null, null |
Common Concerns Answered
Are plain bearings as efficient as ball bearings?
Plain bearings offer smooth operation for many applications and are often sufficient for dinghy and dayboat use. While ball bearings provide higher efficiency under very heavy or frequent high-speed loads, plain bearings on this Barton block are constructed with durable acetal sheaves and robust frames for reliable performance in its intended applications.
Will the plain bearing wear out quickly?
The acetal sheaves and sturdy construction of this Barton block are designed for durability. While plain bearings may experience wear over extensive, high-load periods compared to ball bearings, they are a reliable choice for typical mainsheet and vang systems on smaller craft.
Is this block suitable for high-performance racing?
For extremely high-load, high-speed racing applications where maximum efficiency is critical, ball bearing blocks might be preferred. However, this Barton Size 3 block provides a strong, lightweight, and cost-effective solution for many racing dinghies and dayboats.
Frequently Asked Questions
What is the maximum rope diameter this Barton pulley block can accommodate?
This Barton Size 3 45mm pulley block can accommodate a maximum rope diameter of 10mm (3/8").
What is the Safe Working Load (SWL) for the Barton Size 3 45mm pulley block?
The Safe Working Load (SWL) for the Barton Size 3 45mm pulley block is 400kg (881lbs).
Can this pulley block be used for mainsheet applications?
Yes, this pulley block is well-suited for mainsheet applications on dinghies, dayboats, and lightweight cruisers due to its strength and load capacity.
What is the difference between a plain bearing and a ball bearing block?
A plain bearing block uses a smooth surface for the sheave to rotate on, offering simplicity and durability. A ball bearing block uses small balls to reduce friction, providing higher efficiency and speed, especially under heavy loads.
What materials are used in the construction of this Barton pulley block?
This Barton pulley block is constructed with stainless steel frames, a fiber-glass-filled nylon body, and acetal sheaves.
