N03131 - Barton Marine Barton Size 3 45mm Plain Bearing Pulley | Aztek Computers
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SKU: VIYJ5G5V5J |  Mfg. Part: N03131  | UPC: 5035088080854  |  0 Reviews  |     Share

N03131 - Barton Marine Barton Size 3 45mm Plain Bearing Pulley Block Single Swivel & Becket

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Condition: New

$36.56  $49.36
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Product Overview

Size 3 45mm Plain Bearing Pulley Block Single Swivel & Becket

The size 3 Barton plain bearing blocks have 45mm (1 3/4" sheave size 3 block range incorporates modern design with stainless steel frames and the latest advanced materials, using 30% fibre glass-filled nylon and Acetal sheaves to maximise their strength whilst keeping weight to a minimum. Suitable for use as mainsheet, vangs, lead blocks, or wherever a powerful and compact purchase system is required on dinghies, dayboats, and lightweight cruisers.

Suitable for up to 10mm (3/8") rope.

Specifications:

  • Weight: 91 g
  • Dimensions: 114 × 47 × 28 mm
  • Size: 3 (45MM)
  • Block Type: Swivel + Becket
  • No. of Sheaves: Single
  • Bearing Type: Plain
  • Sheave Size: 45mm x 13mm (1 3/4" x 35/64")
  • Max rope diameter: 10mm (3/8")
  • SWL: 400kg (881lbs)
  • Break load: 800kg (1763lbs)
  • Max rolling load (ball bearing blocks): 270kg (595lbs)

Expert Overview

The Barton Size 3 45mm Plain Bearing Pulley Block, part number N03131, is a single swivel and becket block designed for applications requiring a compact and powerful purchase system. This unit features a 45mm Acetal sheave and a stainless steel frame, utilizing 30% fiberglass-filled nylon in its construction to balance strength with minimal weight. It is engineered for use with ropes up to 10mm (3/8") in diameter. With a Safe Working Load (SWL) of 400kg and a break load of 800kg, this pulley block is suitable for various tasks on dinghies, dayboats, and lightweight cruisers. Potential applications include mainsheet systems, vangs, and lead blocks, where its plain bearing design offers reliable performance for moderate load requirements.

Product Details

  • Manufacturer:
  • Model Number:
  • ASIN:
  • UPC:
  • Condition:
  • Weight:
  • Dimensions:
  • Updated:
  • Added:
  • Country of Origin:
  • Barton Marine
  • N03131
  • B07FCPL8FK
  • 5035088080854
  • New
  • 0.2 lbs
  • 5 X 1 X 2
  • Sep 06, 2026
  • Mar 15, 2026
  • UNITED KINGDOM
Product Identifiers: Brand: Barton Marine • Part #: N03131 • UPC: 5035088080854 • ASIN: B07FCPL8FK • Category: Pulleys, Block & Tackle

Frequently Asked Questions

What is the maximum rope diameter this pulley block can accommodate?

This pulley block is designed to be used with ropes up to 10mm (3/8") in diameter.

What is the Safe Working Load (SWL) for this block?

The Safe Working Load (SWL) for this Barton Size 3 pulley block is 400kg (881lbs).

What are the primary components of this pulley block?

The block features a stainless steel frame, a 45mm Acetal sheave, and incorporates 30% fiberglass-filled nylon in its construction.

What types of vessels is this pulley block suitable for?

This pulley block is suitable for use on dinghies, dayboats, and lightweight cruisers, particularly for applications like mainsheets, vangs, and lead blocks.

N03131 - Barton Marine Barton Size 3 45mm Plain Bearing Pulley Block Single Swivel & Becket

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$36.56