mōhiotanga mahi o te pūtahi dth
Te mātāpono o te whakahaere a te DTH hammer he whakamua whakarerekē i te ao o ngā momo whakanui, e mahi ana ki uta i tētahi rautaki pneumatic kuhutia e pai ai te kawe i te kaha nui o te kawe kōwhiri ki te karu whakanui. E whakamahia ana te hāwai whakatipu hei whakatūhia i te pihinga hei whakahoki atu ki te karu whakanui, me te hanga i tētahi pūtake whakapae e āhei ai ki te whakanui i te whenua kōhatu matangaro. Ko te hāwai whakatipu ka noho i waenga i ngā pūtake: hei kawe i te pūtētē me te tahutahu i ngā koreko mai i te poaka. Ko ngā take nui o te pūtētē ko te whatu whakamuri, ko te whatu tohu, ko te whakawā hāwai, ko te pihinga, ko te wāhi roa, ko te whatu whakarite karu, me te karu whakanui. Ki te kitea te hāwai whakatipu i mua i te whatu whakamuri, ka whakatūhia te kawe whakawhiti o te pihinga, ka kawe i te kaha nui ki te karu whakanui. Ko te taunga o ngā kawe nei e āhei ana i waenganui i te 1500 ki te 2500 kawe per minute, ki te hāngai ki te hāwai me te hanga o te pūtētē. Ko te whakaheke o te pūrangi whakanui ka taea te whakawehewe i ngā kawe puta noa i waenganui o te poaka, ahakoa te kuhuanga pūnaha o te hāwai, ka tahuti haere tonu te hāwai ki te tahutahu i ngā koreko me te whakanui i te werohanga o ngā take whakanui. Kua whakaangina tēnei mātāpono i te nuinga o ngā whenua kōhatu matangaro, i ngā whakanui puhipuhi roa, me ngā momo hanga kai katoa, ka tuku ake ratonga whakanuitanga pai rawa i te hunga whakanui rōtī whakarerekē.
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