Windowless / Dynamic Sampler

Occupying a small footprint, this compact and extremely versatile rig is capable of a range of site investigation techniques in areas of restricted space and difficult access, including disturbed and undisturbed sampling, SPT and dynamic probing.

Mounted on a small crawler unit, the rig is easily transportable and simple to manoeuvre through tight spaces, causing very little disturbance to its surroundings.

Features include:

  • Disturbed and undisturbed sampling, SPT and dynamic probing.
  • Compact crawler mounted design.
  • 2-piece drop hammer incorporated in mast assembly for recovery of casing and sampling tools.
  • Mast assembly can be detached for remote operation.
  • Hydraulic tilting undercarriage allows operation on inclined slopes of up to 30 degrees from horizontal.
  • Deck area with storage capacity for all required drilling tools.
  • Rotary concrete coring head available as an option. Useful when concrete and tarmac overlie the area to be sampled.
  •  3 cylinder 19 HP diesel engine providing increased power and smoother operation. Easy to access for simple maintenance.


Engine / Chassis

Honda 13 hp GX390 petrol engine with electric start


Hydraulic system


2 No. gear pumps 15 litres / min @ 180 bar

Mast assembly with fully enclosed automatic percussive device for DPSH / SPT and window / windowless sampling

Automatic DPSH / SPT Pentrometer carriage. Hammer 63.5 kg x 760 mm fall x 35 blows / min

Carriage stroke 1300 mm
Push 300 kg
Vertical slide stroke 300 mm
Under carriage
Standard track length 1165 mm fixed @  750 mm
Track width 180 mm
Ground bearing pressure 0.25 kg / cm2
Max gradient 30 deg
Speed 3 km/h
Track controls Remote track controller, enabling safer maneuverability of the machine
Dimensions and weights. Standard machine (*no upper rod guide, ** no side basket)
Mast horizontal Length 2000 mm *
  Width 750 mm **
  Height 1350 mm *
  Weight 850 kg
Mast vertical Length 2100 mm *
  Width 750 mm **
  Height 2200 mm *

The Construction Plant-hire Association
Members Of The Construction Plant-hire Association