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ALF - automatic locking fall arrest pulley

The ALF ( Automatic Locking Fall Arrest Pulley) is designed for climbing vertical structures such as ladders. Rope lengths can be adjusted and configured to virtually any height of climb which makes it a good option for temporary or short duration work on various sites such as wind turbines. However it is also ideal for use in semi-permanent applications such as rope courses where it can be left outside and used very regularly with little wear or deterioration.

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Principal Features

  • Lightweight and compact
  • Bi-directional fall arrest lock on
  • Ideal for continuous use such as climbing wall
  • Stop within a few centimetres
  • Easy to use
  • Dimensions: Head only 100mm x 90mm x 70mm
  • Weight: 2.2kg pulley only
  • Capacity: No limit to ultimate system length
  • Arrest force: max 6kN
  • Max user weight: 136KG

Principal Materials

  • Heat treated, anodised aluminium and stainless steel
  • 11mm low stretch kernmantle polyamide rope


  • EN360
  • ANSI Z359.1
  • Rope - EN 1891-A
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