Products >> Kelly Bar >>
Interlocking Kelly bar
- Product No.:201494105045
Interlocking Kelly bar
Interlocking Kelly bar is one of a most import parts used in rotary drilling rig, when you start a bored pile work, drill shaft, cassion pile, pillar work, you need
to choose the correct type kelly bar as per the land layer, if it hard layer shaft/ pillar work,you need to choose a interlocking kelly bar,
We can fabricate interlocking kelly bar for almost all type kelly bar to match up different brand
rotary rig, including Bauer kelly bar, IMT kelly bar, soilmec kelly bar, Liebherr kelly bar, Sany kelly bar, XCMG Kelly bar, Sunward kelly bar,
zoomlion kelly bar.
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.
Locking system
Standard kelly bars are delivered as fully lockable system with a mechanical locking mechanism
between each element and between outer bar and rotary drive, 4-element kelly bars can be supplied as non-lockable friction kellies as option.
.
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
● Interlocking Kelly bar
● 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
Mechanical interlocking Kelly bar Outer Diameter (mm) Elements Maximum drilling depth (m) Retracted length (m) 254 2 or 3 10 to 30 6.45 to 11.45 292 2 or 3 15 to 42 9.35 to 18.20 298 3 15 to 33 7.35 to 13.35 305 3 or 4 12 to 36 5.75 to 10.50 343 3 or 4 15 to 48 7.30 to 14.15 355 4 18 to 43 6.00 to 13.00 368 3 or 4 18 to 52 8.40 to 15.40 377 4 40 to 48 11.00 to 15.00 394 3 or 4 21 to 64 9.70 to 18.70 406 4 29 to 62 8.50 to 16.50 419 3 or 4 24 to 68 10.70 to 19.70 440 2 or 4 18 to 65 13.00 to 15.00 470 3 or 4 24 to 64 10.70 to 19.25 482 4 31 to 67 10.50 to 16.50 508 4 25 to 53 7.50 to 14.50 559 3 ro 4 30 to 72 13.75 to 21.75
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