O
O.ERRE / OERRE
O.M.B. Vibrator Motors
OBL
OBO Bettermann
Octagon Systems
ODE
OEG Brakes / Officina Elettromeccanica Gottifredi
OELTECHNIK
OEMER
Oerlikon Leybold
Ogura Clutch
Oilgear
Oilon
Oiltech
OJOP
Okaya Electric Industries Co., Ltd
Olaer (brand of Parker)
OLDHAM
Oleodinamica Marchesini
OLI
OLMEC
OMAC
Omal Automation
Omnitrack
OMPI
OMT
ON Semiconductor
Onka
OPKON Elektronik
Oppermann Regelgeräte
optek-Danulat
Optex FA
optris
orange research
Orbinox
Orbitalum Tools
ORIENTAL MOTOR
Orobica
Orsta
Osborn / Osborn International
OSBY PARCA
OSIP Pump
OSLV
Ott Antriebe
Ott Jakob Spanntechnik
OXFORD INSTRUMENT