BG 28  BS 80

 BG 28

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The BG 28 rotary drilling rig has an operating weight of approx. 95 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 head drilling ("cased CFA system"), displacement piles, soil mixing wall system (SMW)

 

Technical specifications

Overall height (m) 26,5 (ft) 86.8
Torque
Engine Power
(kNm)
(kW)
270
354
(lbf-ft)
(HP)
199,200
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
19,3

(lbf)
(lbf)
(lbf)
(ft)
56,200 / 71,300
18,000 / 22,500
74,200 / 74,200
63.3
Alternatively:
Crowd cylinder push
Crowd cylinder pull
Stroke
 
(kN)
(kN)
(m)
250
330
6,5
(lbf)
(lbf)
(ft)
56,200
74,200
21,3
Max. diameter
Max. drilling depth
(mm)
(m)
1.900 / 2.100
71
(ft)
(ft)
6.2 / 6.9
232
Crawler length
Crawler width
Width of track shoes
(mm)
(mm)
(mm)
5.680
3.300 – 4.500
800
(ft)
(ft)
(in)
18.6
10.8 - 14.8
31.2
Operating weight (approx.) (t) 96 (lbs) 211,200
         

 

Drilling processes