For OEM gear and pinion sales:
North American gear motor inquiries:

Nissei Corporation of America
11107-J South Commerce Blvd.
Charlotte, NC 28273 USA
704-504-0608 Fax

Brother International Corporation
200 Crossings Blvd.
Bridgewater, NJ 08807-0911 USA
866-523-6283 Toll Free
908-575-3743 Fax

Gear motor inquiries outside North America please visit the Nissei Japan website.