All the info here is not originally mine, I've cut and pasted it from this thread. Same info, but all the credits are back there. I'll keep working on it when I have time, If you've got something to add, PM me or post here and I'll modify this post, to keep all the info up top for easy reference.
German Translations
OF = OberFräse = ("upper-router") router (in Germany almost any time a plunge-router, never saw a fixed base router over here, although Bosch introduced a "convertible" router a few month ago)
TS = TauchSäge = ("dip-saw") in the US, this is simply sold as circular saw, in Germany we distinguish the "normal" circular saw in standard circular saws with fixed riving knife and pendulum cover and in plungable circular saws, usually without pendulum cover and with spring loaded riving knive - this constructions are related to our security standards, they changed this standard a few month ago, so it is possible to sell circular saws without riving knife and with pendulum cover which can be used for plunging too. There are some circular saws in the german market which combine a spring loaded riving knife with a pendulum cover (Hilti WSC 255 and WSC 265, both made by Mafell, some other Mafell-saws).
MFT = MultiFunktionsTisch = MultiFunctionTable
PS = PendelStichsäge = Pendulum Stroke Jigsaw
PSB PendelStichsäge Bügelgriff = Pendulum Stroke Jigsaw - Bügelgriff is the clamp-like handle
TDK = don't know, same with C (C12)
CT = CleanTec (dust extractors), L in CTL - "Staubklasse L". M in CTM = "Staubklasse M" - "Dustclass M", where the M stands for a dust extraction system that lets only 0,1% of the dust pass while L may pass up to 1% - there is a international standard which describes these dustclasses (IEC 335-2-69)
HL = HobeL = Planer
EHL = EinhandHobeL = Einhand - Onehanded Planer (not sold in the US?)
FS = FührungsSchiene = Führung = Guide ("the Führer") - Schiene = Rail
DF = DübelFräse = Joiner Router (Domino)
CDD = Cordless Drill Driver
TDD = T-Shape Drill Driver
TDK = TDD Kompakt (compact). They changed the name from TDD to TDK because the TDK was more compact.
The individual parts of the Festool product codes have a specific meaning.
In the UK for example the TS55 EBQ Plus FS GB saw breaks down as follows;
TS = Plunge Saw
55 = Depth of cut (in mm)
E = Electronics (variable speed plus soft start)
B = Brake
Q = Plug it removable mains cable system
Plus = Comes in a Systainer case
FS = Comes with a Guide Rail
GB = GB spec with UK 3 pin plug
I would assume the same applies in the States so a RO 150 FEQ-PLUS would be
RO - Rotary and Orbital motion (Rotex)
150 - 150mm diameter sanding disc
F = Think this is the Fast fix removable sanding pad system
EQ = Electronics (variable speed plus soft start) and Plug it mains cable
Plus = Comes in a Systainer case
German Translations
OF = OberFräse = ("upper-router") router (in Germany almost any time a plunge-router, never saw a fixed base router over here, although Bosch introduced a "convertible" router a few month ago)
TS = TauchSäge = ("dip-saw") in the US, this is simply sold as circular saw, in Germany we distinguish the "normal" circular saw in standard circular saws with fixed riving knife and pendulum cover and in plungable circular saws, usually without pendulum cover and with spring loaded riving knive - this constructions are related to our security standards, they changed this standard a few month ago, so it is possible to sell circular saws without riving knife and with pendulum cover which can be used for plunging too. There are some circular saws in the german market which combine a spring loaded riving knife with a pendulum cover (Hilti WSC 255 and WSC 265, both made by Mafell, some other Mafell-saws).
MFT = MultiFunktionsTisch = MultiFunctionTable
PS = PendelStichsäge = Pendulum Stroke Jigsaw
PSB PendelStichsäge Bügelgriff = Pendulum Stroke Jigsaw - Bügelgriff is the clamp-like handle
TDK = don't know, same with C (C12)
CT = CleanTec (dust extractors), L in CTL - "Staubklasse L". M in CTM = "Staubklasse M" - "Dustclass M", where the M stands for a dust extraction system that lets only 0,1% of the dust pass while L may pass up to 1% - there is a international standard which describes these dustclasses (IEC 335-2-69)
HL = HobeL = Planer
EHL = EinhandHobeL = Einhand - Onehanded Planer (not sold in the US?)
FS = FührungsSchiene = Führung = Guide ("the Führer") - Schiene = Rail
DF = DübelFräse = Joiner Router (Domino)
CDD = Cordless Drill Driver
TDD = T-Shape Drill Driver
TDK = TDD Kompakt (compact). They changed the name from TDD to TDK because the TDK was more compact.
The individual parts of the Festool product codes have a specific meaning.
In the UK for example the TS55 EBQ Plus FS GB saw breaks down as follows;
TS = Plunge Saw
55 = Depth of cut (in mm)
E = Electronics (variable speed plus soft start)
B = Brake
Q = Plug it removable mains cable system
Plus = Comes in a Systainer case
FS = Comes with a Guide Rail
GB = GB spec with UK 3 pin plug
I would assume the same applies in the States so a RO 150 FEQ-PLUS would be
RO - Rotary and Orbital motion (Rotex)
150 - 150mm diameter sanding disc
F = Think this is the Fast fix removable sanding pad system
EQ = Electronics (variable speed plus soft start) and Plug it mains cable
Plus = Comes in a Systainer case
