KM211 Hydraulic-controlled Bolting Rig


The KM211 hydraulic rock bolting rig is specially designed for the construction of rock bolts in the pipe seam of low tunnels and it is capable of passing through tunnels 2.5 meters wide and 1.7 meters high. It is qualified for anchoring operations in tunnels whose section extends to a width of over 2.5 meters and a height of over 2.8 meters.

Application and Features

1. Complete functions
The advancing beam at two stations is available and it is equipped with a magazine with a storage capacity of 10 bolting rods, along with an optional protective netting module. It is capable of performing the following tasks: drilling, netting and installation of rock bolting rods.

2. High safety
Operators are protected by the ceiling, far away from the danger area.

3. High efficiency
The stepped piston is used for the high-frequency rock drill and this can improve the transmission efficiency of impact wave, increasing drilling speed and reducing the consumption of drilling tools.

4. Good view for the operator
The articulated chassis of four-wheel drive ensures the flexible, quick and safe driving in narrow tunnels.

5. Considerable space
Considerable space and automatic functions enable the driver to concentrate on drilling in a safe, fast and accurate manner.

6. Easy maintenance
All the relevant parts are protected from the outside environment and are easy to maintain.

Inquiry Now

Technical Parameters
1. Dimensions and weight

Length10700mm
Width2000mm
Height1500/2000mm
WeightAppr.12000kg
Tramming speed on flat ground10km/h
Maximum climbing capacity25%(14°)

2. Air& water system

Air compressor1×JN5Oil consumption of lubrication180-250 g/h
Capacity of air compressor0.5m³/min
Pressure6-8 barWater pump1×CR3
Device of shank lubricationElectronic pulse lubrication pumpPower1.5kW
Air consumption of lubrication0.3m³/minCapacity of water pump3m³/h

3. Safety protection

Noise level<100dB(A)
Lifting safety roofMeet the requirements of FOPS and ROPS

4. Chassis

Diesel engineCummins QSB3.9 -C80-31/60kW/2200rpmTravelling brakingHydrostatic brake
Exhaust purificationExhaust catalystParking brakingWeb multidisc brake
Drive systemClosed travelling system of
four-wheel drive
Fuel tank60L

5. Drilling system


DillingBolt Rod Install
Rock drill1×HC25/R321×HC25/R32
Impact power8KW8KW
Impact flow65L/min65L/min
Impact pressure150bar150bar
Maximum rotary pressure175bar------
Impact Frequency55-65Hz55-65Hz
Torque325Nm------
Hole diameter32-51mm
Beam rotation360°
Feed extension480mm
Applicable height of tunnelBolt rod length +1500mm

6. Electric hydraulic power unit

Motor45kW
Impact/Feed/PositioningAxial variable displacement piston pump
RotationGear pump
Filter fineness10 μ
Hydraulic oil tank240L
Hydraulic coolerWater cooler
Working voltage380V
Frequency50Hz
Starting methodStar-triangle
Cable reel1×K440
length of reel cabling100m
Outer diameter of cableφ28mm
Cable specifications3×25+3G6


Deutsch Espanol Francais Italiano Portugues Japanese Korean Arabic Russian