ʻO ka hoʻomaka ʻana o ka ʻau pōhaku paʻa lima

Ua hoʻokomo ʻia ka drill pōhaku lima e Ingersoll-RandCo.i ka makahiki 1912. E like me ke ʻano o ka mana, ua māhele ʻia i ʻehā mau ʻāpana: pneumatic, hydraulic, uila a me ka hoʻokuʻu ʻana i loko.ʻO ka pneumatics ka mea i hoʻohana nui ʻia.He kūpono nā lua pōhaku paʻa lima no ka ʻeli ʻana i lalo a i ʻole nā ​​lua inclined, nā lua kīwaha lua nui, nā puka bolt (nā puka pāpaʻu), a me nā puka pulley paʻa (nā lua pāpaʻu) i loko o ka ʻeleʻele paʻakikī a ma luna.ʻO 19 ~ 42mm ka anawaena drill, a ʻo ka hohonu o ka lua he 5m, ma lalo o 2.5m.He 15～45J ka ikehu hopena, he 27~36Hz, he torque drill o 8～13N·m, he kaomi hana o 0.5～0.7MPa, he ea hoohana 1500～ 3900L/min, a me ke kaumaha o 7~30kg.