1.    This drill has more positive speed grades and reasonable speed range, with bigger output torque at low speed which gives it an extensive use range; it is Suitable for alloy, diamond mud drilling and DTH hammer drilling as well.

2.    It has 2 reverse inversion speed in order to deal with accident.

3.    JDL-300 works with mechanical transmission and auxiliary hydraulic transmission which effectively reduce the power consumption, and also makes drilling cost lower.

4.    JDL-300 uses long stroke multiple speed system, mechanical power head with stroke as 3400MM,to improve drilling efficiency, prevents accidents such as balling up and burning bits from happening.