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Allen 40mm Dynamic Single Block - A20401S

High performing ball bearing block, designed to eliminate friction and allow rope to run at great speeds Read full product description.

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A20401S

Product Information

  • Allen 40mm Dynamic Single Block - A20401S

    New for 2023. 40mm dynamic blocks are perfect for use on main, jib and spinnaker sheets on dinghies and keelboat control lines. Made from high-strength, lightweight glass-loaded nylon and featuring Allen’s dynamic bearing technology for a high-performance block suitable for keelboats and dinghies

    Key Features we love

  • Bearings – Dynamic blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. The ball bearings are caged for further friction reduction. These features provide a superior load-carrying ability and longevity when compared to other bearing systems.
  • Ultra-Strap – Our patented Ultra-Strap is used in our 20, 30 & 40mm Dynamic blocks. The Ultra-Strap is unique when compared to other designs because of its coining process. This process strengthens the strap, making it more reliable and hard-wearing as well as making it rope friendly. The Ultra-Strap block is a great choice for dinghy jib or mainsheet systems.
  • Specifications

    • Breaking Load - 700kgs
    • Length - 64.50mm
    • Max Rope Diameter - 10mm
    • Shackle Pin Diameter - 4mm
    • Max Working Load - 240kgs
    • Weight - 40grams

Guaranteed For Life

Allen Guaranteed For Life

Allen products are warranted to be of merchantable quality and fit for the purpose for which they are sold. In addition, Allen products are guaranteed for life against defects in workmanship, subject to reasonable use. Allen will replace products which are found to have failed through manufacturing and raw material defects. The parts must have been fitted in accordance with the technical instructions, where present, and in any event following the technical guidance of our stockist or representative.

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