Have you thought of using the ProZ glossary for help. Rules strongly suggest you do some research prior:
This is just some of the entries that you could have looked at with a view to fitting within your context:
https://www.proz.com/search/ (boom) in your context.
KudoZ open glossary (102 results)
Mechanics / Mech Engineering (Tech/Engineering) boom type stackers apiladoras tipo pluma (grua)
Mechanics / Mech Engineering (Tech/Engineering) pluma giratoria swinging boom
Construction / Civil Engineering (Tech/Engineering) Articulating boom platform plataforma de pluma articulada
Engineering (general) (Tech/Engineering) Telescopic Boom Pluma Telescópica
Mechanics / Mech Engineering (Tech/Engineering) lower boom hoist cylinder cilindro de elevación de la pluma inferior
Mechanics / Mech Engineering (Tech/Engineering) end boom pluma terminal
Jorge, "please" and "thank you /(Gracias)" always helps. Regards.