Casing Systems

Pinnacle Drilling Products has teamed up with Robit to be able to deliver the highest quality and most innovative drilling solutions for piling, micropiling, underpinning, water wells and more!

Fast drilling & easy handling

Long pilot bit lifetime

Low investment and running costs

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Casing Systems

Robit Casing Systems are the key components of the Ground Drilling Tools product line. Its patented locking system enables easy and reliable drilling cost effectively. Robit Casing Systems have several references worldwide in all major ground drilling applications: forepoling, anchoring, piling and underpinning, horizontal drilling, water and thermal well drilling, soil investigation/ monitoring and underwater drilling.

Roctools • Button bits
Rocktools product line covers all construction, quarrying, and mining drill&blast applications from soft to hardest rock conditions. Tunneling is one of the most important customer segments for Robit bits, and applications like drifting, cuthole and bolthole are well covered. Also . major mining and quarrying customers have approved Robit quality worldwide.

Spiral Locking System

  • Drive the pilot bit through the casting tube
  • Rotate to locked position in the ring bit
  • Robit Casing System is ready to drill!
  • Finish drilling by rotating the pilot bit in the opposite direction

DTH PRIME

Prime system for down the hole hammer

Robit® Prime ring bit product family makes it possible to pile both welded and threaded casing tubes using the same ring bit. Pile walls can also be made using the XL2 ring bit. With the Drill Through (DT) model, drilling can be continued with just the pilot.

• Suitable for different wall thicknesses, easy to align and weld
• Available with Flow Control rinsing
• With the Drill Through pilot bit, rock sockets can be drilled in a single work phase

RoX+

Single-Use System for Top Hammer

Robit Single Casing Systems are available for traditional top hammer machinery. Typically Robit single-use system for top hammer is used in applications with relatively short hole requirements and where the casing is left in the ground, such as:

  • Forepoling or tube umbrella
  • Anchoring
  • Micropiling

Product: RoX+ 139,7/10

Rock/Ground Conditions: All rock and ground formations

Applications:Tube Umbrella, Forepoling and Micropiling

Top Hammer Thread: C45

Rotation Speed: 30-40 RPM

Torque: 1000-1200 Nm

Percussion: 75-100 bars

NOTE: Parameters may vary depending on rock / ground conditions, application and machinery.

RoX GFRP

Single-Use Top Hammer for Fiberglass

Robit has developed a system for fiberglass casings. A unique casing shoe works as a shock-absorber protecting the drilling forces. Fiberglass casings bring several benefits:

Lighter casing, easier to handle

Lower material cost – more economic drilling

Easy to excavate – drill & blast in overburden conditions

Section: 1700mmq

External Diameter: ø 76 mm

Internal Diameter: ø 60 mm

Thickness: 8 mm

Weight: 3.2 kg

Glass content in weight: 50%

Specific weight: 1.8 g/cc

Tensile strength: 600 Mpa

Flexural strength: 600 Mpa

Elastic modulus: 20,000 Mpa

DTH-RoX+

Single-Use System for Down the Hole Hammer

Sometimes overburden is thick and full of boulders. Robit Single-Use Casing Systems for DTH Hammer enables easy, fast, and reliable drilling process in all conditions. Robit Single-Use Casing Systems are available for all common Down the Hole Hammers and are designed for all the applications where the casing is left in the ground.

  • Water well drilling (+,++: ring bit ID optimized)
  • Thermal well drilling (+,++: ring bit ID optimized)
  • Piling (+: for thick wall casings)

Product: DTH-RoX+ 168,3/10

Rock/Ground Conditions: All rock and ground formations

Applications: Piling

DTH Hammer Size: 5″

Rotation Speed: 30-40 RPM

Torque: 1500-2000 Nm

Compressor Output:15-24 m3/min Max 17kg/cm2

530-848 CFM / 250 PSI

Compressor Pressure: 10-16 bar

NOTE: Parameters may vary depending on rock / ground conditions, application and machinery.

DTH SR

Solitary ring system for down the hole hammer

DTH SR products are economical and cost-effective to use when the ground is homogenous with few small boulders. With the same pilot you can install piles and interlocked Pipe-Pile-Wall piles just by using ring bits with different outside diameters. Robit Solitary Ring Casing Systems are available for all the common Down The Hole hammers and can be used for all applications where the casing is left in the ground but have been especially designed for:

  • Piling
  • Underpinning
  • Micropiling

Product: DTH SR 219,1/12,7

Rock/Ground Conditions: Homogenous soil with small boulders

Applications: Piling and Pipe-Pile-Wall

DTH Hammer Size: 6″

Rotation Speed: 20-30 RPM

Torque: 2200-3200 Nm

Compressor Output:20-24 m3/min Max 17kg/cm2

707-848 CFM / 250 PSI

Compressor Pressure: 10-16 bar

NOTE: Parameters may vary depending on rock / ground conditions, application and machinery.

DTH SF

Steel Fist System for Down the Hole Hammer

Robit Steel Fist product family is designed for specific piling operations, sizes from 273 mm up to 1200 mm. New economic way for traditional piling work, but also capable for installing water-proof Pipe-Pile-Walls. No ring bit is needed when piling with DTH SF. Usage in homogenous soil conditions with small boulders. Robit Steel Fist Casing Systems are available for all the common Down The Hole hammers and can be used for all applications where the casing is left in the ground but have been especially designed for:

  • Piling
  • Piling Pile-Pipe-Wall

Product: DTH SF 323,9/12,7

Rock/Ground Conditions: Homogenous soil with small boulders

Applications: Piling and Pile-Pipe-Wall

DTH Hammer Size: 8″-10″

Rotation Speed: 15-25 RPM

Torque: 7000-10,000 Nm

Compressor Output: 24-33 m3/min Max 17kg/cm2

848-1165 CFM / 250 PSI

Compressor Pressure: 10-14 bar

NOTE: Parameters may vary depending on rock / ground conditions, application and machinery.

DTH-Rox MU

Multi-use system for down the hole hammer

In some overburden drilling applications the casing has to be removed from the ground. This sets higher requirements on the durability of the equipment. Double groove design* in the casing shoe and the best materials available guarantee that Robit Multi-Use System does not fail, even in the most difficult conditions. Robit Multi-Use System is available for all the common DTH hammers . It is typically used in the following applications:

  • Piling
  • Anchoring
  • Site Investigation

Product: DTH-MU 219,1/10

Rock/Ground Conditions: All rock and ground formations

Applications: Piling

DTH Hammer Size: 6″

Rotation Speed: 20-30 RPM

Torque: 2200-3200 Nm

Compressor Output: 20-24 m3/min Max 17kg/cm2

707-848 CFM / 250 PSI

Compressor Pressure: 10-16 bar

NOTE: Parameters may vary depending on rock / ground conditions, application and machinery.

DTH-RoX HZ

Horizontal System for Down the Hole Hammer

The loads in Horizontal Drilling that the casing systems must endure are severely higher than in typical vertical drilling. Robit Rocktools has developed a system which is capable of handling even the toughest ground conditions.

The Robit HZ- System consists of three parts; pilot bit, ring bit assembly with the ring bit and protective layer and impact shoe. The pilot bits hits directly the casing via the welded casing shoe. This causes that all the efforts of pulling the tube is diverted to the impact shoe and not on the ring.  The ring bit is rotated with the pilot bit. This system leads to a longer life time of the ring bit, better penetration during drilling and increased reliability to finish the hole on time and according to plans.

Product: DTH-RoX HZ 323,9/12,7

Rock/Ground Conditions: All rock and ground formations

Application: Horizontal Drilling

DTH Hammer Size: 8″-10″

Rotation Speed: 15-25 RPM

Torque: 7000-10,000 Nm

Compressor Output: 24-33 m3/min Max 17kg/cm2

848-1165 CFM / 250 PSI

Compressor Pressure: 10-14 bar

NOTE: Parameters may vary depending on rock / ground conditions, application and machinery.

DTH-Rox NS

Non-Stop system for down the hole hammer

Robit Non-Stop System is an advanced casing system that starts to drill with a casing, then continues beyond it without tool changes. No need to pull out the pilot bit and the drill string to replace it by a conventional down the hole bit. A single operation disconnects the pilot and the ring from the casing. The drilling can be continued free from the casing tube without losing the drilling diameter. Robit Non-Stop system can be used in various applications:

  • Anchoring
  • Piling
  • Water and thermal well drilling

Working Principal

  1. Drill the casing to the required depth.
  2. Continue drilling with the pilot  and ring bit combination beyond the casing.
  3. Retrieve the pilot. Ring bit is left in the ground.
  4. Install the anchor and pull the casing out from the hole.