Kelly drilling | Liebherr deep foundation

Kelly drilling

Kelly drilling belongs to the most common dry rotary drilling methods and is used for the production of bored piles with a large diameter (from a size of approx. 500 mm). The process is suitable for nearly all types of soil and rock. The soil is conveyed with relatively short rotary drilling tools, such as augers, core barrels, buckets and special drilling tools. A typical element of this drilling method is the drill rod, the so-called Kelly bar, which is telescopic and facilitates large drilling depths.

Procedure with uncased Kelly drilling:

1. Installing the protective pile

2. Emptying, e.g. with an auger

3. Inserting the reinforcement

4. Concreting

5. Finished pile

Video Kelly drilling

The video shows Liebherr drilling rigs in different Kelly drilling applications.

Cased Kelly drilling

When the soil is insufficiently solid or in case of groundwater ingress boreholes must be produced using a casing.

01/08

Machines

Results 1-6 of 11

Drilling rig (LB series)

Operating weight - 69.3 - 79.9 t
69.3 - 79.9 t
Max. torque - 252 kNm
252 kNm
Kelly drilling, max. drilling depth - 53.2 m
53.2 m
Kelly drilling, max. drilling diameter - 3,300 mm
3,300 mm

Drilling rig (LB series)

Operating weight - 99.0 - 111.1 t
99.0 - 111.1 t
Max. torque - 347 kNm
347 kNm
Kelly drilling, max. drilling depth - 77.5 m
77.5 m
Kelly drilling, max. drilling diameter - 4,100 mm
4,100 mm

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Kelly drilling with an LB 45

Foundation piles for the new Neckartal bridge at Heilbronn (GE).

01/06

Tools for professionals

Augers, drilling buckets, core barrels, casing drivers, casings, cutting shoes, etc.
Wear parts (chisels, teeth, blocks)

Kelly drilling tools

It was close!

Spectacular performance of LB 36

LB 45 Animation

Get in touch

If you have any further questions, please contact our local sales or service team.

Kelly drilling tools