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ROCK DRILL / DH206

DH206 rock drill – More powerful, More convenient

DH206 has the best balance of drilling performance and enhance usability.

Unlike traditional rock drills that require a large air compressor, which can be difficult to transport and operate during operation on the site conditions, DH206 generates air by its own by built-in compressor.

Compared with DH205, DH206 delivers greater air flush and increased power for drilling efficiency.

Side handle allows easier handling and better control during operation.

DH206 has 4 different modes, allowing operator to adjust settings depending on the hardness of the rock.

Like DH205, DH206 also has non-rotation mode that helps align the drill point before starting.

DH206 is CE-certified and equipped with an anti-vibration handle and safety lock lever, ensuring a safer and more comfortable user experience.

SPECIFICATIONS

Dimensions(mm) L592×W412×T143
Weight(kg) 24.4 (Without hoses)
Working Pressure(MPa) 9~14
Max Pressure (MPa) 20.6
Oil Flow(ℓ/min)
 30ℓ/min
(20-25ℓ/min with Orifice plug)
Blow Per Minute/
Rotation Per Minute		 Mode 0：2340BPM

Mode 1：2220 BPM / 240 RPM

Mode 2：2100 BPM/ 350 RPM

Mode 3：1800 BPM / 675 RPM
Vibration Level (ISO 28927-10)

3 axis
8.48m/s²（30L/min)
Sound Power (2000/14/EC)

-Measured Sound Power Level　　Lwa = 105dB(A)
-Guaranteed Sound Power Level    Lwa =107dB
Shank Size

HEX : 7/8”x4-1/4” (22 x 108mm)
Coupling

3/8” Couplers
Extension Hose Max1/2”×20
Recommended Hydraulic Oil ISO VG32(Standard), ISO VG46 or equivalent
Other Built-in Compressor
External air supply available

USE UH130 FOR POWER SOURCE


･Adjustable oil flow in three modes.
　Choose either 20ℓ/min, 25ℓ/min, or 30ℓ/min.

 

 

 

　(Check specification of UH130)

 

 

 

 

 

[EXTERNAL AIR SUPPLY]

1. In case of deeper drilling(1.5m – 3.0m), air supply from outer source(air compressor)is more effective for drilling.

(1) Recommended specifications of air source(air compressor)

Air Consumption 0.57㎥/min
Air Pressure 0.5MPa*1

*1:When the air pressure of air source(compressor)is higher use regulator and adjust the air pressure.

Be careful not to enter microscopic dust, sand or moisture into the machine through the air line.
Otherwise, machine may be mechanically trouble.
To supply clean and dry air into the machine, set-up of the air cleaner is recommendable.

 

(2) How to connect to external air supply
 Take of Plug(47)and connect air hose(IDΦ8.5). Connection of air hose is PT1/4.

 

 

HOW TO USE

Be sure that pressure and oil flow of the power source is suitable with specification above.

1. Before Start

(1)Open the drill stay and insert the drill rod.
Make sure if the drill rod is not too much worn out or exceed usage limit.
NOTE: Ensure that power source and drill is disconnected when inserting the drill rod to prevent unexpected activation.
NOTE: Ensure to use drill rod with shank size 7/8” x 4-1/4” (22x108mm) hex. Do not use other sizes. Ensure the holes of drill rod and bit is not plugged.

(2) Close the drill stay. Make sure the rod(or other tools)is firmly locked.

(3) Make sure there are no dust, mud, or other foreigner substance on couplers when attaching extension hose and power source.(Lock couplers after connection.)

(4) Start the power source and allow hydraulic oil to flow into rock drill. 

2. Operation

(1) Drilling

①Place the end of the rod on the place where you intend to drill, press down the rock drill gently, grip the control lever and start drilling.
   Rotation direction is clockwise when you look from the top of drill.
   (When rotating un-clockwise, please check the hoses are connected correctly.)

②For preventing rock drill to bouncing around while operating, let the end of the rod closed to one of your feet and drill until the rock drill can be stably operated.

③Adjust the rotation speed according to the type of the rock.

 

MODE Rotation per minutes Application
1 240 rpm Hard Rock
2 350 rpm Medium to Hard Rock
3 675 rpm Soft Rock

*Rotation per minute above is rough standard. Please choose the mode depending on situation.

(2) Breaking

① Use fluted moil point to have air escape.

② Open drill stay and insert moil point.

③ Close the drill stay. Make sure the moil point has been fastened firmly.

④ Adjust the knob to “0″ position.

3. After the Operation

(1) After the operation, stop the power source.

(2) Detach the connection hoses.

(3) Make sure all the couplers on standard hoses(attached to rock drill)and connection hoses are attached to each other to prevent dirt and etc. entering.

(4) Open the drill stay and remove moil point or tool.

(5) Clean all dirt, mud, and etc. on the rock drill.

MAINTENANCE

1. PROCEDURES FOR LONG TERM STORAGE

  1. Connect the rock drill to a hydraulic power source.
    Insert a rod with a diameter of 17–25 mm and a length of at least 150 mm into the tool insertion port, and push the piston to the upper limit position.
  1. Apply rust inhibitor to the piston through the tool insertion port.
  1. As shown in the diagram below, remove the cleaner case of the air cleaner and take out the internal cleaner sponge.
    Apply rust inhibitor to the hole in the cleaner case and operate the rock drill for approximately 1 minute in that condition.
    After the operation, return the cleaner sponge and cleaner cover to their original positions.Caution: Failure to perform steps (1), (2), and (3) may cause internal rust, which could lead to oil leakage or seizure.
  2. Clean the air cleaner. (Refer to page 13.)
  3. Wipe the entire rock drill with an oil-moistened cloth to clean it.
    Cover the rock drill and store it in a dry, moisture-free location.

2. PERIODICAL INSPECTIONS

Ask your dealer for the periodical inspections.

Inspection Item Inspection Cycle
Nitrogen gas charge in accumulator 300 hours or 1 Year
Replacement of accumulator diaphragm  

 

500 hours or 2 Years
Replacement of O-Ring
Replacement of U-Cup Packing
Replacement of compressor piston ring

*Accumulator Nitrogen gas pressure: 3.9MPa (40kgt/㎠)

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