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Integral Steel Rod is used by a hand held drill machine in Underground mining and for small hole drilling, equipped with small power rock drills, like air leg rock drills, hand held rock drills, etc. It can reduces the expense of impact energy, improves the drilling speed and efficiency, also it can be used for drilling bore hole diameter from 30mm to 41mm usually.
Integral Drill Steels are a fixed length with a shank at one end and a bit at the other ,and are able to drill to a depth equivalent to their effective length.The bit may consist of single chisel shaped tungsten carbide insert or three such inserts.
To drill deep holes,the rods are designed to be used in a series where the length of any rod used in longer than the one used just before it.
To do this ,a series of rods must be produced so that the bit diameter is reduced for each increase in length if rod to prevent jamming of the bit in the hole.
| Name | Shank Size | Length (mm) | Chisel bit Diameter (mm) | Drawing |
|---|---|---|---|---|
| Integral drill rod | H19x108mm | 400~4000 | 23~35 |  |
| 210~340 | 17~22 |  |
||
| H22x108mm | 400~3200 | 23~29 |  |
|
| 400~8000 | 26~41 |  |
An integral drill rod is a drill steel of a fixed length featuring a shank at one end and a bit at the other. It is engineered to drill boreholes to a depth corresponding to its specific effective length.
These rods are widely utilized in underground mining operations, tunneling projects, and the dimensional stone quarrying industry. They are ideal for hand-held rock drilling applications.
The standard available shank sizes are H19x108mm and H22x108mm. The effective drilling lengths range from 210mm up to 8000mm depending on the model chosen.
Typically, integral drill steel rods support chisel bit diameters ranging from 17mm to 41mm, suitable for a wide range of light-duty rock drilling requirements.
To prevent the drill bit from getting jammed inside the borehole during deep drilling, a series of rods must be designed so that the bit diameter slightly decreases with each progressive increase in rod length.
They are highly compatible with small-power pneumatic rock drills, including hand-held and air-leg models such as the YT23, 7655, and Y20LY rock drills.
