ʻO ka ʻeli ʻana i lalo i ka mīkini wili wili lua

ʻO ka wehewehe pōkole:

TDS puʻe kiʻekiʻe DTH drill mana i ka neʻe ʻana o ka mīkini ʻaila hydraulic, ka hoʻololi ʻana, ka hoʻoulu ʻana a me ka hāpai ʻana, ke koʻi koli wahi a pēlā aku e ka diesel (electronic motor) e hoʻokele ana i ka ʻaila ʻaila hydraulic.

Hoʻopau nā hamare ma lalo o ka lua i ka ea kaomi wale i ka wā e wili ai.Hiki iā ia ke mālama i ka ikehu (ka aila aila a i ʻole ka nui uila) e like me 40% ~ 50% e like me ka huina pneumatic drill.Maikaʻi ʻo GL-120Y no ka hoʻoheheʻe ʻana i ka lua ma ka ʻili o ka ili, ka hale uila wai, ka hana alanui a me ka papahana pōhaku.