Oildynamic gear pumps 1TM FB – Gear pumps group 1 Execution holes on a square shape 1TM FP – Gear pumps group 1 Italian drilling execution (30×30) 2TM – Gear pumps group 2 European Unification – standard 2TM BC – Gear pumps group 2 Germany Standard 2TM DEU – Gear pumps group 2 Mechanical coupling with engines DEUTZ-KHD 2TM SAE CB – Gear pumps group 2 SAE A fluted shaft 21TM BC – Double group 2+1 pumps Indipendent aspirations 21TM DEU – Double group 2+1 pumps Indipendent aspirations 22TM BC – Gear pumps group 2+2 Indipendent aspirations 3TM BC – Gear pumps group 3 German unification – conical shaft