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DMM Impact Block - Large Pulley

Excl. VAT: £227.50 Incl. VAT: £273.00

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Quick overview:

DMM Impact Block-Large

Excl. VAT: £227.50 Incl. VAT: £273.00

Product Details

Designed for use in the tree care industry when loads may be dropped into rigging with considerable impact forces.

The combination of high-quality materials and advanced production processes has ensured a rope friendly, durable and robust product.

During design, each Impact Block has gone through a thorough dynamic and static testing regime, the end result is a highly functional product with an impressive strength to weight ratio.


  • Rounded edges to cheek plates maintain low rope abrasion when the rope is fed ‘unfair’
  • Fairlead flares help maintain high working efficiency
  • Thrust surfaces increase tolerance to external loading of spindle and anchor pin
  • Lightweight attachment sling facilitates hauling of block, sling and rope to the climber and helps with handling, in tree stowage and workshop storage
  • Direct connection to cordage, the anchor slings helps ensure correct neighbour component compatibility
  • High-efficiency oilite bushings to reduce friction
  • Colouring follows EU WLL protocol
  • Individual serial marking
  • Made in Wales, UK


IMB - Large

  • Minimum breaking strength [MBS]: 300kN
  • Working Load Limit [WLL]: 60 kN
  • Maximum rope diameter: 20 mm
  • Weight: 3.47kg


Suggested Areas of Application

  • Tree care – dismantling operations
  • Forestry – winching operations
  • Rescue


Technical Specifications

  • CE certification to European Machinery Directive 2005
  • Hot forged cheek plates in 6082-T6 aluminium for high strength to weight ratio
  • CNC machined from 6082-T6
  • Anodised to EN-12373-1:2001 Class I0EI Sealed for corrosion protection
  • Stainless Steel 303 hollow spindle (IMB-L only)
  • Stainless Steel 303 anchor pin (IMB-S), or 174 anchor pin (IMB-L)
  • Efficient and robust Bronze self-lubricating oilite bushings
  • 6082-T6 aluminium alloy sheaves




Standard Mainland UK Delivery:

  • FREE on orders over £60 (excluding VAT) - £72 (inc VAT)
  • £4.75 - Orders upto £59.99 (excluding VAT)
  • In stock items are dispatched on a 24 hr delivery as standard.

- Orders received on a working day (Mon-Fri) are delivered within 1-5 working days

- Orders received on Friday will be delivered on Monday if in stock.

- Saturday deliveries are available by phone order - 0151 345 9971

Click for more information on Delivery and Returns.


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