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Auto Standard Penetration Test (SPT) Hammers

Auto Standard Penetration Test (SPT) Hammers

Item Code: SPT Hammers


The SPT Hammer is an effective tool to collect Standard Penetration Test (SPT) blow counts with almost any drill rig. The SPT Hammer is designed as a non-permanent fixture to the rig structure (or permanent if required), and is suspended from your wireline as per the manual SPT Hammer.

The Drillman SPT Hammer is a hydraulically driven, fully automatic SPT hammer providing a consistent 30" (762mm) drop of the enclosed slug at a variable blow count range from 0-53 blows per minute. The SPT hammer is hydraulically piggybacked from an existing auxiliary circuit - most commonly the breakout tong function on the valve bank via breakaway couplings,and would fit any drill rig without the need for any modification. This also means you can have a single hammer that can transfer across multiple rigs. The motor flow rate and pressure are available on request.


  • Complete hydraulic function with fully concealed moving parts
  • Considerable safety advantages and hands free operation
  • Designed and manufactured in Australia to comply to all relevant standards
  • Easily "piggy backed" to any existing control panel
  • Regular consistent results
  • Flexibility of non permanent fixture maintained
  • Interchangeable "thread stubs" allow suitability to all pipe variations
  • Extremely robust design for long service life



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