KB21 - Versatile drilling rig with a stable performance base
The KB21 is the EU-compliant successor to the KB20 and has been redesigned to meet the requirements of modern emissions regulations. The integrated exhaust aftertreatment system results in a larger and heavier machine, but it retains the wide range of applications, reliable performance, and flexible drilling methods for which its predecessor was known.
With its stable hydraulics, high feed force, and robust chassis platform, the KB21 is suitable for well drilling, geothermal energy projects, soil investigations, soundings, and geological exploration. The machine is designed for users who require a reliable, versatile, and technologically advanced solution that delivers smooth and reproducible drilling processes even during extended work cycles and under varying soil conditions.
The KB21 thus combines the operating logic of the KB20 with current EU engine technology, and due to its size and mass, is aimed more at users who need more reserves and a more stable working platform.
Dimensions
Transport length
Transport height
Transport width
Weight
from 5,000 mm
2,300 mm
1,500 mm
from 4,500 kg
Technical features
Undercarriage
Engine
Hydraulic system
Drilling mast
Supporting mast
Rubber track undercarriage
Undercarriage length: 2,500 mm
Undercarriage width: 1,500 mm
4 hydraulic supports
Hatz 4H50 TICD OPU diesel engine
Exhaust aftertreatment: EGR, DOC, DPF
Stage V / Tier 4 final, emissions standard 5
Power output: 54 kW at 2,100 rpm
Axial piston pump 117 l/min, 260 bar
Gear pump 35 l/min, 210 bar
Oil-air cooler
Proportional directional control valve technology
Hydraulic tank: 180 l
Bio-hydraulic oil based on esters HEES46
Feed system with hydraulic cylinders and reeved flyer chains
Lifting capacity: 48 kN
Feed force: 32 kN
Feed lengths: 2,300 mm 3,300 mm
Shifting the drill carriage on the base frame by 300 mm
Equipment and expansion options
Drilling head
Chuck
Duplex preventer system
Rod clamp
Lift clamp
Piping rotary table
Winch
Rope pull
furnishings
Mast crown
Flushing pump
Gearbox with 2 or 3 speed stages
Torque: up to 6,000 Nm
Rotational speed: up to 210 rpm
Optional: Dry drilling heads up to 7,000 Nm
Hydraulic clamping head with interchangeable jaws for a clamping range of 80 – 178 mm
Connection in the clamping head: 2 3/8" IF
Cuttings discharge: DN 100
Output flange for drill pipe: 178 mm
Drive rod: 88.9 mm / 2 3/8" IF
Drill pipes and drill rods rotate clockwise at the same time!
Clamping range: 50 – 178 mm
Closed passage: 180 mm
Side-opening to both sides
Maximum passage: 324 mm
Clamping force: 220 kN
Optional: Rod breaker clamp combination
3-part system with clamping inserts for various diameters
Maximum clamping diameter: 219 mm or 324 mm
Lifting force: 150 kN
Lifting height: 200 mm
Clamping force: 77 kN
Optional: Pipe breaking unit with chain wrench
Maximum clamping range: 219 mm with interchangeable jaws
Maximum torque: 12,000 Nm
Rotational speed: 0–10 rpm
Stroke: 270 mm
Lifting force: 120 kN
Feed force: 80 kN
Swivels 90° to the side
Lower catch clamp with interchangeable jaws
Pulling force: 15 kN
Rope capacity: 70 m
Rope diameter: 7 mm
SSW320/5
Lifting force: 5 kN
Lifting height: 320 mm
Blow rate: 50/min
With 2 rollers for winch operation
Optional: Foldable mast extension
Optional: Mast head with winch
— 250 kg capacity, 90° swivelling, 500 mm extension
Optional: Magnetic lifting device for drill rods and drill pipes
Single-stage horizontal centrifugal pump with mechanical seal
Flow rate: 720 l/min at 83 m head
Optional: Progressive cavity pump
Flow rate: up to 80 l/min, max. 12 bar
Areas of application
Well drilling
Geothermal energy
Soil investigation
Ordnance survey
Geological explorations
Drilling methods
Cased dry drilling
Drilling with a hollow auger
Directional drilling
Down-the-hole hammer drilling
Duplex drilling method
Geological explorations
Drill diameter
max. 219 mm
max. 185 mm
max. 190 mm
approx. 150 mm
Drill pipes 178 mm
Down-the-hole hammer/wing chisel 150 mm
Wire rope core drilling 146 mm
100 mm drill core
Drilling depth
approx. 20 m
approx. 30 m
approx. 100 m
approx. 100 m
Drill pipes approx. 30 m
Down-the-hole hammer/fluid drilling
approx. 100 m
max. 40 m