SAFETY
BG 25 / 2011 /
2254_BG25_en_0000498763_V01
2 - 9
2.5.3
Stability for BG 25 # 2254 - Kelly BK 25/394/4/40
2.5.3.1 Load Capacity Chart
Valid only for
Mast extension --- m
--- t
Counterweight
6.20 + 6.20 t
Kelly BK 25/394/4/40
7.70 t
Casing drive adapter
1,500 mm
1.90 t
Drilling tool
1,350 mm
2.30 t
Conditions for operation
Crowd sledge stopper mounted (max. stroke: 8,120 mm)
B0000689.wmf
B00005003.wmf
B00005002.wmf
Max permissible load / max ground pressure**
Min. drilling distance*: -- m Max. drilling distance*: 3.39 m
Auxiliary
rope
8.0 t
390 kPa
Main rope
20.0 t
370 kPa
Crowd
26.0 t
420 kPa
Auxiliary
rope
α = °
β = °
γ = °
δ = °
α = 6°
β = 3°
γ = 0°
δ = 120°
8.0 t
690 kPa
Main rope
α = °
β = °
γ = °
δ = °
α = 6°
β = 3°
γ = 4°
δ = 120°
20.0 t
490 kPa
Crowd
α = °
β = °
γ = °
δ = °
α = 6°
β = 3°
γ = 4°
δ = 120°
26.0 t
570 kPa
Auxiliary
rope
α = °
β = °
γ = °
α = 6°
β = 3°
γ = 0°
5.0 t
560 kPa
Main rope
α = °
β = °
γ = °
α = 6°
β = 3°
γ = 4°
20.0 t
490 kPa
Crowd
α = °
β = °
γ = °
α = 6°
β = 3°
γ = 4°
26.0 t
570 kPa
Max. working platform inclination /
max. ground pressure ***
5° /
310 kPa
*) Drilling distance
= centre distance from machine to drilling tool
**)
Max. value of ground pressure as calculated in conformance with DIN EN 791 (1995 issue)