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Kelly bars

Teleskopic Kelly bars transfer torque and crowd force from the rotary drive to the drilling tool.

Bauer Kelly bars are featuring specific construction details:

  • 2 - 5 fold telescopic construction for a depth range from 15 - 100 m
  • torque transfer capacity 120 - 480 kNm
  • interlocking type (as standard for BG rigs)
  • friction kelly (mainly for crane attachment rigs)
  • 6 cams and large wear-resistant guides
  • spring-type shock absorbers
  • standardised square kelly drive stub for connecting all types of drilling tools 
  • noise-damping system (optional)

kellystange.jpg

 

 

BK 12

 BK 15

 BK 20

 BK 25

 BK 28

 BK 40

 BK 48

Dia outer kelly Ø (mm)

305

343

368

394

419

470

559

No of tubes

3/4

3/4

3/4

3/4

3/4

3/4

3/4

extended length (m)

12-36,5

17-50,3

20,6-55

24-67,5

27-70

30-74,8

34,5-85,3