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Powered roof supports DM

0,6...0,7...0,8
Advance step, m
0,85 – 1,75
Seam thickness, m
2200 – 2800
Shield resistance, kN
Description

Designed for supporting and controlling the roof in mined area of face while operating flat seams of 0.85-1.75 m thickness.

Main advantages:

  • optimized construction to operate in thin seams with lightweight roofs according to GOST 31561;
  • unique construction of catamaran-type basement lifting mechanism to operate in soft soil conditions;
  • effective operation in conditions of unstable direct roof using the high retaining console effort with transmitting an effort from the hydraulic prop (patented);
  • effective and reliable European-made control system of different types: pilot control, multi-hose control, electric-hydraulic control.
Characteristics
Seam thickness, m 0,85 – 1,75
Shield type Shield, support-protection type, double-prop
Resistivity per 1 m2 of supported area, kN/m2 385 – 505
Shield resistance, kN 2200 – 2800
Advance step, m 0,6...0,7...0,8
Centre spacing, m 1,5
Advancing force, kN 300
Shield weight, t (no more than) 7,5 – 7,7
Height (min-max), mm 610 – 1750
Width, mm 1440
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Sets
# Armored conveyors with twin outboard chains arrangement SPTs271M # Armored conveyors with twin outboard chains arrangement SPTs230 # Armored conveyors with twin outboard chains arrangement SP251 # Armored conveyors with twin outboard chains arrangement SP250 # Shearer CLS550P # Shearer CLS450 # Shearer KDK500 # Shearer КА200
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