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Kelly bar
- Product No.:201494101012
KELLY BAR
Kelly bars are key components in the deep foundation work, such as bored pile, drill shaft,
pillar by hydraulic rotary drilling rigs. They transfer the torque of the rotary drive and the crowd pressure of the
crowd system concurrently to the drilling tool. A kelly bar consists of 2 – 5 telescopic
tubular sections with a system of drive keys and lock recesses, welded onto their
outer surfaces. Standard kelly bars are fabricated with a total of 6 drive keys on each
section. The tubular kelly sections are manufactured from high-tensile seamless steel
tube to ensure minimum weight at adequate strength.
IMT , SOILMEC IMT, Casagrande, Mait, Sany, XCMG etc., the high quality steels and components together with quality system ISO 9001
make our Kelly bars have the highest reliability.
Main features of Kelly bars:
● 2 to 6 elements telescopic Kelly bars for Piling
● The depth range is from 10m to 110m
● Torque transfers capacity from 80kNm to 500kNm
● Friction Kelly bar
● High quality seamless steel pipes
● 6 cams and drive ribs made of special steel materials
● Top flange for connecting Kelly bar to Kelly swivel
● Upper or lower spring shock absorber
● Drive pipe that transfers torque and crowd force to the Kelly bar
● Standard or customized square Kelly box for connecting all types of drilling tools
Frictions Kelly bar
Outer Diameter (mm) Elements Maximum drilling depth (m) Retracted length (m) 298 4 or 5 32.50 to 50 7.5 to 11.00 324 4 25.50 to 32.50 8.00 to 9.00 340 4 32 to 56 9.00 to 16.00 355 4 or 5 19 to 55 6.00 to 12.00 368 3 or 4 18 to 52 7.00 to 15.00 377 4 or 5 31 to 60 8.50 to 13.00 394 3 or 4 21 to 64 9.50 to 18.50 406 4 or 5 32 to 77 9.00 to 16.50 419 4 or 5 25.70 to 67.50 7.50 to 14.50 440 3 or 5 18 to 72 7.50 to 15.50 470 4 or 6 32 to 90 9.00 to 19.00 483 4 or 5 37 to 77 10.50 to 16.50 508 4 or 5 32 to 75 9.50 to 16.00
Products Category
- Casing Oscillator
- Casing
- Kelly Bar
- Micro pile drilling system
- CFA Auger
- Drilling Bucket
- Core Barrel
- Belling Bucket
- Full Displacement Tools
- Desander
- CMP Rolling Machine
- Roller bit
- RCD Drilling System
- Hammer Grab
- Diaphragm Wall Grab
- Tremie Pipes
- Vibroflotation Equipment
- RC Drilling rod
- Drilling Auger
- Multi-Shaft Auger Machine
- Cutter pick
- Hydraulic vibratory hammer
- Pile Breaker
Contact Us

Tel: +86 10 57133886
Fax: +86 10 82893390
E-mail: [email protected]
Add: No.3-1-1904, Zhujiangmoer International Building, Beiqinglu road, Changping distict, Beijing, PRC