Na 1895, German overtone mere mgbawa DC mbụ n'ụwa.A na-eji ígwè nkedo eme ụlọ ahụ ma nwee ike ịkụnye oghere 4mm na efere ígwè.Mgbe ahụ, ọkụ eletrik nke ugboro atọ (50Hz) pụtara, mana ọsọ moto ahụ adaghị site na 3000r/min.N'afọ 1914, ngwaọrụ eletrik nke igwe na-akpali akpali nke otu usoro na-ebugharị pụtara, na ọsọ moto ahụ ruru ihe karịrị 10000r/min.N'afọ 1927, ngwá ọrụ ike nke etiti na-enye ike nke 150-200Hz pụtara.Ọ bụghị naanị na ọ nwere uru nke oke ọsọ nke moto usoro otu usoro, kamakwa ọ nwere uru nke usoro dị mfe ma bụrụ nke a pụrụ ịdabere na ya nke moto ugboro ugboro atọ, mana ọ kwesịrị ịkwado ya site na ugboro ugboro ugbu a., amachibidoro iji.

Ngwá ọrụ ike bụ ngwá ọrụ mechanized nke na-eji moto eletrik ma ọ bụ electromagnet dị ka ike ma na-ebugharị isi na-arụ ọrụ site na usoro nnyefe.Dị ka "National Economic Industry Classification" (GB/T4754-2011), ụlọ ọrụ ụlọ ọrụ bụ nke sub-category "Pneumatic na Ike Ngwá Ọrụ" (koodu C3465) nke sara mbara Atiya "General Equipment Manufacturing".A na-ekewa ngwá ọrụ ike ka ọ bụrụ ngwá ọrụ ike ịkpụ ígwè, ngwá ọrụ ike egweri, ngwá ọrụ ike mgbakọ na ngwá ọrụ ụgbọ okporo ígwè.Ngwá ọrụ ike nkịtị bụIgwe anaghị agba nchara igwe anaghị agba nchara DC2808/20V, electric grinders, belt grinders, electric wrenches, electric screwdrivers, electric hammers, ihe vibrators, electric planers, angle grinders, electric saws, sanders, angle grinders, blowers, polishing machine, sander, etc.

Ụlọ ọrụ ndị dị n'elu nke ngwá ọrụ ike bụ ndị na-ebupụta ngwa ngwa (dị ka mpempe akwụkwọ silicon, enamel wires ọla kọpa, akụkụ aluminom, plastik, wdg), na ụlọ ọrụ ahụ na-enwe mmetụta karịa mgbanwe ọnụahịa nke ihe ndị ahụ a kpọtụrụ aha n'elu.Ebe ngwa ngwa nke ngwaọrụ ike gụnyere okporo ụzọ ihe owuwu, ịchọ mma, nhazi osisi, nhazi ígwè na ụlọ ọrụ mmepụta ihe ndị ọzọ.N'ịbụ ndị atumatu gọọmentị nke na-akpali agụụ ụlọ na ịba ụba ego na akụrụngwa, atụmanya mmepe n'ọdịnihu nke okporo ụzọ ihe owuwu na ụlọ ọrụ nhazi ígwè na-ekwe nkwa, si otú a na-eme ka mmụba nke ụlọ ọrụ ngwá ọrụ ọkụ.