Pneumatic Roof Bolters

Pneumatic roof bolter MQT series pneumatic roof bolters are applicable to support with cable or bolt in coal laneway, half-coal laneway and rock laneway with rock hardness no more than 100MPa. They are combined with drilling, mixing and assembling. Dual exhaust model and new seals structure ensure the fast and smooth leg expansion and retraction. The unique silencer reduces noise, drilling shaft and leg center are perfect alignment, drilling stably. MQT series pneumatic roof bolters are working with our hexagonal drill rods of B19 and B22, wrench and various drill bits to carry out the roof supporting work. Technical Parameters Parameters MQT-90/2.3 MQT-100/3.1 MQT-110/2.8 MQT-120/3.0 MQT-130/3.2 Applicable Air Pressure (Mpa) 0.4-0.63 0.4-0.63 0.4-0.63 0.4-0.63 0.4-0.63 Rated Air Pressure (Mpa) 0.5 0.5 0.5 0.5 0.5 Flushing Water Pressure (Mpa) 0.6-1.2 0.6-1.2 0.6-1.2 0.6-1.2 0.6-1.2 Rated Torque (N.m) 90 100 110 120 130 Rated Rotary Speed (r/min) 240 280 240 240 240 Idle Propelling Speed (mm/s) 400 400 400 400 400 Max. Output Power (Kw) 2.3 3.1 2.8 3 3.2 Idle Rotary Speed (r/min) 650 900 700 700 700 Idle Torque (N.m) 230 180 230 240 240 Max. Loading Torque(N.m) 220 170 220 230 230 Air Consumption (m3/min) ≤3.2 ≤3.8 ≤3.6 ≤3.8 ≤4.0 Noise (dB(A)) ≤90 ≤90 ≤90 ≤90 ≤90 Leg Type I II III I II III I II III I II III I II III Leg Propulsion (KN) 5.2 6.7 9.8 5.2 6.7 9.8 5.2 6.7 9.8 5.2 6.7 9.8 5.2 6.7 9.8 Max. Height (mm) 2540 3020 3588 2566 3046 3614 2552 3032 3600 2552 3032 3600 2552 3032 3600 Min. Height (mm) 1163 1283 1425 1189 1309 1451 1175 1295 1437 1175 1295 1437 1175 1295 1437 Weight (kg) 46 48 50 45 47 49 48 50 52 48 50 52 48 52 50 Hexagonal Drilling Rod   Specification（mm) B19，B22 Screw Thread Size M14×1.5 rectangular thread 16    M16×2  rectangular thread 18 Length Can be customized as per requirements Drilling Bit   Specification（mm) Φ27,Φ28,Φ30,Φ32，Φ38,Φ42,Φ44 Screw Size M14×1.5  M16×2