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Allen Brothers Expands its Range of High Load Blocks

by Ben Harden 19 Mar 09:00 UTC
The High Load range of blocks from Allen © Allen Brothers

The range of High Load Blocks from Allen is expanding with additions such as doubles, triples and Tii-Ons now available.

As technology and design has evolved over the past few years it has led to the loads on sailboats increasing and rope diameters decreasing. These changes denote smaller but stronger blocks are required. To meet the needs of our ever-evolving sport Allen has broadened its range of High Load Blocks to facilitate these changes.

Allen High Load Blocks fit between the standard dynamic range and the XHL range. The blocks feature a stainless-steel sheave which runs on a double race of stainless-steel ball bearings. By utilising a stainless-steel sheave with a slight V-shape profile, the Allen High Load range offers the ability to be paired with both wire and Dyneema®. This design also reduces deformation of the sheave under high static loads. These combinations result in less friction, higher working loads, better performance and durability over the acetal sheave Dynamic Block range.

New variations of the High Load Range are:

A2030TiiHL - 30mm Tii-On High Load Single
Tii blocks are designed for soft attachment applications. Perfect for use in systems where weight saving is a necessity or there is no requirement for a metal shackle. See more info about the Tii-On Range.
Working Load - 300Kg
Breaking Load - 800Kg

A2030HLF - 30mm Fork Head High Load Single
Ideal for use as an ILCA Dinghy Vang top block or any other application that benefits from a removable clevis pin at the head of the block.
Working Load - 300Kg
Breaking Load - 750Kg

A2022HL / A2032HL - 20 & 30mm High Load Double
For reducing friction in any system or using in a highly static loaded applications which still needs to be dynamic, such as a rig tension system.
Working Load - 325Kg / 450Kg
Breaking Load - 600Kg / 1250Kg

A2024HL / A2034HL - 20 & 30mm High Load Triple
For reducing friction in any system or using in a highly static loaded applications which still needs to be dynamic, such as a rig tension system.
Working Load - 400Kg / 650Kg
Breaking Load - 650Kg / 1750Kg

A2020HL-4036 - 20mm High Load Single with Offset Lacing Eye
Can be used to attach an A2020HL directly to surface whilst eliminating the need for a shackle.
Working Load - 250Kg
Breaking Load - 540Kg

Working Load - The load at which a component part may fail and cause a reduction in performance.
Breaking Load - The load point at which a major failure is likely to occur.

For further information about the range please get in touch with the Allen sales team at or visit

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