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Allen Brothers  |  SKU: ALNA20401B

Allen Brothers 40mm Dynamic Block with Becket/Swivel

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Sale price $51.90 Regular price $54.40

Pickup available at 1830 East Interstate 30

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DELIVERY AND RETURN INFO

Allen Brothers 40mm Dynamic Block with Becket/Swivel

40mm Single Dynamic Swivel Block With Becket

The 40m Single Dynamic Swivel Block With Becket is a high-performance pulley designed for keelboats and dinghies. Manufactured from durable, lightweight glass-loaded nylon and featuring Allen's advanced Dynamic Bearing Technology, it delivers smooth, efficient line handling for mainsheets, jib sheets, spinnaker sheets, and control line systems.

The integrated becket makes it ideal for creating compact purchase systems for mainsheet, cunningham, outhaul, and vang controls.

Features:

  • Single-sheave design for smooth and efficient line handling
  • Manufactured from durable, lightweight glass-loaded nylon
  • Ideal for mainsheet, jib sheet, spinnaker sheet, and keelboat control line applications
  • Patented Dynamic Bearing System with twin rows of stainless-steel ball bearings running on a stainless-steel rail
  • Caged ball bearings for reduced friction and enhanced rolling performance
  • Superior load-carrying capability and long service life
  • 360° Swivel Head fitted with a 4mm shackle for flexible attachment and optimal load alignment
  • Integrated Becket for creating purchase systems and convenient tie-off points
  • Ideal for mainsheet, cunningham, outhaul, and vang control systems
  • Designed for smooth, reliable performance in demanding marine environments

Technical Description

Accessories Becket, Swivel
Bearing Type Dynamic
Configuration Single
Length 99.88 mm
Height 98 mm
Maximum Line Diameter 10 mm
Breaking Load 780 kg
Maximum Working Load 240 kg
Sheave Material Acetal
Sheave Diameter 40 mm
Pin Size 4 mm
Weight 59 g
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