KM311 Full Hydraulic Roof Bolter

KM311 is cost-effective full hydraulic bolting rig dedicated to low underground drifts, capable of passing extreme narrow section 2.5m width × 2.2m height, suitable for rock support in medium & small mines and small tunnels above 3m height. Integrated dual-station bolt feed beam with built-in bin for 10 rock bolts, optional mechanical mesh handling arm enables full support cycle: drilling, steel mesh laying and split tube/resin bolt installation on single machine. Equipped with efficient HC28 high-frequency drifter and 4×4 articulated wet brake chassis for flexible climbing & relocation in narrow drifts. FOPS & ROPS falling-rock safety canopy, built-in air compressor, water mist dust suppression and shank lubrication system are fully equipped, complying with mining explosion-proof & exhaust purification standards for gas & heavy-dust underground environments. Modular layout simplifies overseas maintenance, full machine export, optional mesh arm supply and overseas on-site operation training available.

Barrier-free transit in drifts as low as 2.2m, dedicated for narrow coal gate roads and small diversion tunnels
Dual-station bolt feed beam with large storage bin holding 10 bolts at once, reducing downtime for frequent refilling
Optional independent mesh handling arm realizes 3-in-1 drilling, meshing & bolting to shorten full support cycle
HC28 stepped piston high-frequency drifter delivers fast bolt hole penetration with low rod & bit consumption
4×4 articulated wet brake 4WD chassis with max 14° gradient and 5.2m small turning radius for flexible U-turn in narrow roadways
FOPS & ROPS certified falling-rock safety canopy isolates roof collapse hazards, single operator finishes full anchoring safely
Centralized hydraulic valve bank with wide machine vision, simple operation logic for quick operator training
Full mining explosion-proof configuration with exhaust catalytic purifier, compliant for gas & heavy-dust underground mining
Built-in air-water synchronous dust suppression & lubrication cuts drilling dust and extends drifter seal service life
Full modular split design for separate disassembly, maintenance and replacement of boom, hydraulic and travel components
Compatible with split tube bolt, resin anchor bolt and mainstream support consumables with strong mine universality