U100 (U4) and U70 Samplers - used for obtaining undisturbed samples in most soils and some weak rocks. The U100 sampler gives a nominal 100 mm (4") diameter sample and the U70 gives a nominal 70 mm diameter sample.

Roschen U100, U70 Sampler system equipment is designed for obtaining undisturbed samples in most soils and some weak rocks such as Chalk and Marl. The sampler produces a nominal 100mm diameter soil core, approximately 450mm long. The sample tube with attached cutting shoe is driven into the ground by means of a Sliding Hammer. A Drive Head fits between the Sliding Hammer and the Sample Tube and contains an overdrive space and a ball valve.

This equipment is designed for taking samples in clay and other soft formations. The sample tubes are each 18″ long and are driven into the ground using a sliding hammer with U100 drive head (bell housing) attached. The drive head contains a ball valve to allow air to be released from the upper part of the sample tube as it is being driven into the ground.

DTH hammer Cushion Subs for increasing tooling life, reduced equipment downtime



Cushion Subs used for rotary top drive and the drill string protecting drill pipe thread

Single Disc Cutter cutting tool for rock excavation TBM equipment tunnel drilling

Random Roller Cutter is a kind of TCI roller cutter without annular grooves (chipways) on the cutter surface, and its carbides are randomly distributed on the cutter body surface according to the design. This kind of roller cutter can be used not only in raise boring equipment, called raise boring cutter; but also widely used in reverse circulation drilling equipment, called RCD cutter.

Retrac button bits are mainly used in loose rock mass with relatively broken rock. The retrac skirt design can assist in retrieving the drill tool, reduce the phenomenon of bit stuck and buried, and help improve the straightness of the borehole.

Roschen Boart Longyear Q/QTK wireline systems (represented to the left) consist of the core barrel assembly and the overshot assembly. Both assemblies are integral to the wireline system.