Product Introduction
High drilling Efficiency of Portable yT29A rock drill
The yt29a rock drill is suitable for drilling horizontal and inclined holes in medium-hard and hard rocks. It can also drill vertical holes,so it is one of the best pneumatic jack hammer in mining works. The hole diameter is generally 34-45 millimeters, and the effective and economically viable drilling depth is 5 meters. According to the size of the roadway section and the working conditions, it can be equipped with the FT160A type pneumatic leg, the FT160C type long pneumatic leg, the FT160B type short pneumatic leg or the FT170 type pneumatic leg.
A. Extra blowing, water flushing off, impact and rotation off.
B. Stop position, air and water off
C. Low throttle, air to pusher leg, water flushing
D. Medium throttle
E. Full throttle
YT29A Rock Drill Technical Specifications
|
Model |
YT29A |
|
Weight |
26.5kg |
|
Length |
659mm |
|
Air pressure |
0.4-0.63Mpa |
|
lmpact frequency |
≥31HZ |
|
Air consumption |
≤65L/s |
|
lmpact energy |
≥70 (J) |
|
Cylinder*stroke |
82mm*60mm |
|
Air pipe diameter |
25mm |
|
Shank dimension |
22*108mm |
|
Bit diameter |
34-45mm |
|
Drilling depth |
5m |
Fitting and removing of the pusher leg rock drill
Before fitting the best pneumatic jack hammer
-Check that the tool shank is of the correct size and length for the chuck used.
-The shank must be clean and the tool must be in good condition.
-The suitable quenching hardness of the shank is HRC48-53. Harder end face will cause piston damaged and breakage of the end face of the piston. If the shank face is too soft, it will be easily deformed by the piston, which will result in difficulty in removing the working tool.
-Shank end face shall be flat and perpendicular to the axis.
-Remove sharp edges from the shank's end face. Rough shank surface will cause premature piston failure.
-Inspect the bits: Dull bits will slow down the drilling speed and overstrain the drill mechanism. When changing bits make sure that the new bit is the correct size to follow your previous bore.
-Before drilling check that the flushing hole in the working tool is not blocked.
Fitting the pusher leg rock drill
-Push the retainer outwards in the direction of the arrow, until the front portion of the retainer is able to accommodate the working tool collar.
-Insert the drill in the chuck.
-When the drill bottoms, push back the retainer to lock it.
Removing the yt29a rock drill
-Push the retainer outwards in the direction of the arrow until the working tool collar disengages from the front of the retainer.
-Pull the working tool out.
-Push back the retainer.
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