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Allen Brothers  |  SKU: ALNA20401B-77

Allen Brothers 40mm Dynamic Block/Becket with Swivel and A..77 Cleat

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Sale price $120.60 Regular price $126.48

Pickup available at 1830 East Interstate 30

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DELIVERY AND RETURN INFO

Allen Brothers 40mm Dynamic Block/Becket with Swivel and A..77 Cleat

40mm Single Dynamic Swivel Block With Becket & Cam Cleat

The 40mm Dynamic Single Swivel Block With Becket & Cam Cleat 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.

Combining a swivel head, integrated becket, and adjustable cam cleat, this block is ideal for cunningham, outhaul, vang, and other purchase system applications.

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 cunningham, outhaul, and vang control systems
  • A.77 Aluminium Cam Cleat mounted on an adjustable stainless-steel arm for secure line holding and easy adjustment
  • Cleat angle can be adjusted by repositioning the arm to suit different installations and line lead angles
  • Designed for smooth, reliable performance in demanding marine environments

Please Note: Maximum working load is limited by the cam cleat rating.

Technical Description

Accessories Cleat, Becket, Swivel
Bearing Type Dynamic
Configuration Single
Breaking Load 780 kg
Length 99.88 mm
Height 98 mm
Maximum Line Diameter 6 mm
Maximum Working Load 80 kg
Pin Size 4 mm
Width 48 mm
Weight 122 g
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