two2tango is, so to speak, spot-on regarding the welding gear. Meanwhile, here are a few hints for your other queries. -- unidad de esfuerzo = power unit; unidad de guiado = drive unit; amortigaución final del retroceso de cabezal = final head-recoil damping ; unidad de deplazamiento de guias = guide (or "guide-bar") displacement unit; guias prismaticas de rodadura = prismatic roller guides (or "guide bars"); regulacion del juego entre guia = adjustment of the play between guides (or "guide bars"); plancha de montaje = mounting plate or assembly plate; carátula de maniobra = working mask (e.g., the type of head and face protection worn by a welder); detector proteccion de cabezal = head-protection detector; sonda medida de corriente = current probe or current-measurement probe; simple y doble presión = single-pressure and dual-pressure (as adjectives); Tensión alimentación = supply voltage (NOTE: In English electrical and electronics usage, "tensión" is always "voltage," not "tension"); Tensión Secundaria En Punto = secondary peak voltage; s/d (welding pressure/cycle) = single/dual; Esfuerzo Maximo de Soldadura = daN: Maximum Welding Force (is measured in) daN (decanewtons) (NOTE: A decanewton is equal to ten newtons. The newton is the unit of force in the meter-kilogram-second system); caudal de Regrigeración = l/h: Cooling flow rate (is measured in) liters per hour; Consumo de aire = Nl: Air consumption (is measured in) normal liters; Seccionador = circuit breaker (or simply "breaker") ; carrera cilindro = cylinder course; carrera trabajo de cabezal = working head course (or "travel"); carrera aproximación cabezal = (not sure; possibly "head approximation course (or "travel"); potencia = power (or possibly "power rating," depending on context); supply tension en vacío y en cortocircuito = supply voltage, under vacuum and short-circuit conditions; gradiente de temperatura = temperature gradient; Eje del Cabezal = head axis. ABBREVIATIONS: I'm afraid I can't help much here, except to note that "FM" stands for "frequency modulation," among many other things; "I" is the abbreviation for electrical current; kA = kiloamperes (the ampere is the unit of measurement for electrical current in the meter-kilogram-second system); and "DIN" stands for "Deutsches Institut fur Norming," i.e., the German Standards Institute). -- This should give you a good leg up on your project. Best, HC