BG 28 H  BT 85

 BG 28 H

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The BG 28 H rotary drilling rig has an operating weight of approx. 96 t
It is ideally suited for:

  • Drilling cased boreholes (installation of casing by rotary drive
    or optionally by hydraulic oscillator – both are powered by the drilling rig)
     
  • Drilling uncased deep boreholes that are stabilised by drilling fluid
     
  • Drilling boreholes with long hollow stem augers (CFA system), with or without kelly extensions
     
  • Special drilling systems, such as FOW piles, double rotary hard drilling ("cased CFA system"), displacement piles, soil mixing systems (CSM and SWM)

 

Technical specifications

Overall height (m) 25,4 (ft) 83.4
Torque
Engine Power
(kNm)
(kW)
294
354
(lbf-ft)
(HP)
216,900
475
Main winch effective/nominal
Auxiliary winch effective/nominal
Crowd winch push/pull
Stroke crowd winch
(kN)
(kN)
(kN)
(m)
250 / 317
80 / 100
330 / 330
18,4

(lbf)
(lbf)
(lbf)
(ft)
56,200 / 71,300
18,000 / 22,500
74,200 / 74,200
60.4
Max. diameter
Max. drilling depth
(mm)
(m)
1.900
72,2
(ft)
(ft)
6.2
236.9
Crawler length
Crawler width
Width of track shoes
(mm)
(mm)
(mm)
5.500
3.300 – 4.500
800
(ft)
(ft)
(in)
18.0
10.8 - 14.8
31.2
Operating weight (approx.) (t) 99 (lbs) 218,300
         

 

Drilling processes