SBU-250 SELF-PROPELLED DRILLING UNIT
SBU-250 SELF-PROPELLED DRILLING UNIT
The SBU-250 self-propelled drilling unit is designed for drilling of upward boreholes, downholes and horizontal holes with rock hardness of f < 4 as per Protodiakonov’s scale.
The SBU-250 unit is used in potash mine workings where formation of category 1 explosive mixtures is likely to become and where aeration is provided due to mine ventilating pressure drop.

SPECIFICATIONS

Parameters Value
Minimum working section, m2 10
Height of working, m, min 2,2
Dip angle of a working, degree, max + 12
Angles of drilling, degree:  
- upward boreholes from + 45 to + 90
- deviating holes from 0 to + 45
- down holes from-45 to -90
Hole diameter, mm, max 250
Depth of a borehole, m, max 20
Distance from the floor to borehole axis while lateral drilling, m 0,6
Travel speed of the unit, m/min 17,9
Clearance, mm, max 240
Overall dimensions in transport position, mm, max  
-width 2100
- height 1700
-length 5000
Installed power, kW, max 45
rotary head’s drive power, kW 22
Mass, kg, max 8000
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