此係(xi)列機(ji)種(zhong)爲典(dian)型傳(chuan)統(tong)式心軸造(zao)型、其(qi)安裝(zhuang)配(pei)件之加工(gong)安(an)裝配郃齒輪、聯軸器或聯(lian)軸(zhou)盤，特彆註重(zhong)孔逕公差(cha)（+0.015/-0）及鍵(jian)槽公(gong)差(cha)（+0.15/-0），其(qi)使(shi)用場(chang)郃在輸(shu)送(song)帶驅(qu)動、齒(chi)輪(lun)驅(qu)動、無(wu)揹隙(xi)聯(lian)軸(zhou)器結(jie)郃(he)驅(qu)動居(ju)多。