DMM Impact Pulley Blocks The DMM Impact Pulley Blocks are engineered for extreme rigging scenarios where loads may be dropped onto the system, generating significant dynamic forces. Designed for professional arborists, rigging specialists and rescue teams, these blocks combine exceptional strength, durability and rope-friendly performance in a lightweight, high-performance design. Available in XS, S and L sizes, it's in stock at Gustharts as an authorised DMM dealer, with free UK delivery on this order. Manufactured using advanced materials and precision engineering, Impact Blocks have been rigorously tested against dynamic, torsional and static loads, delivering a class-leading strength-to-weight ratio. The Impact Block XS introduces an interlocking anchor bollard for double security, oversized bearings for improved efficiency, and a hollow axle design that enables advanced rigging configurations and easier maintenance. Whether used for redirect rigging, winching or snatching timber, these blocks deliver smooth rope handling, reduced friction and maximum control under load. Key Features & Benefits Designed for high-impact rigging scenarios Exceptional strength-to-weight ratio Rope-friendly design for reduced wear and smooth operation Large sheave with oversized bearings Interlocking anchor bollard for double security (XS) Hollow axle design — rope or sling compatible (XS: 10mm, L: 20mm) Serviceable design for bearing replacement and maintenance Technical Details Construction High-strength aluminium Sheave Large diameter, oversized bearings Axle Design Hollow (XS: 10mm / L: 20mm) Use Case Impact rigging, winching, timber handling Why Choose the DMM Impact Pulley Blocks? DMM is a long-established Welsh climbing hardware manufacturer, and the Impact Block's rigorous dynamic and torsional load testing specifically targets the demanding forces of controlled dismantling and heavy timber handling — a genuine step up from standard pulleys not rated for shock loading. Pairs Well With Complete your rigging system with compatible rigging rope and a connector rated for the block's WLL. Also Known As Also searched for as: DMM Impact Block, rigging pulley block, DMM Impact XS, heavy-duty arborist pulley. FAQs What are Impact Pulley Blocks used for? Rigging situations where loads may be dropped or subjected to high dynamic forces, such as tree dismantling. What is the benefit of the interlocking anchor bollard? It provides an additional level of security by preventing accidental movement or loosening under load. Can the pulley be serviced? Yes — the Impact Block is designed to be serviceable, allowing bearing replacement and maintenance. What is the hollow axle used for? It allows additional rigging configurations, including passing a rope or sling through the block. Which size should I choose? XS suits compact, lightweight rigging setups; S and L scale up for heavier loads and larger rope or sling diameters.
