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Phone: (408) 980-9822
Fax:     (408) 980-1860
Planetary Geared Motors
Planetary Gear
Spur Geared Motor
Spur Gear
Worm Gears Worm Gear
Stepping Motors Stepping Motor
Brushless DC Motors Brushless DC
Permanent DC Motors
PM DC 
AC Motors
AC Motors
Encoders
Encoders
Fans
Cooling Fans
Accessories
Accessories
About SEI
Source Engineering Inc. has been in business for over a decade providing manufacturing and sourcing solutions for US marketplace. Our main office is located in Santa Clara, California with offices in Shanghai and Changzhou.

Having our manufacturing facilities located in mainland China, with engineering / technical support and warehouse located at our facility in Santa Clara, California, Source Engineering is committed to the manufacturing of high quality, cost-effective motors and motion control products for the OEM marketplace. We have a track record of outstanding performance and maintain long-term partnerships with our customers.

Our operations are certified to ISO 9001:2000 and QS 9000. All products carry major approvals such as UL, CE and CSA. With Source Engineering, you get the highest quality products, all made possible by the most dedicated people.





   Featured Products

NEMA 24 Stepping Motor

This motor has the same mounting and shaft configuration as all NEMA 23 stepping motors. If you have room for a slightly larger body (3.55mm) you can achieve 75% more torque than your current NEMA 23 stepping motor. The cost effective NEMA 24 High Torque motor can enhance the performance of your product without increasing the size.

This motor can be coupled with one of our Spur or very cost effective Planetary Gearbox’s. >> Datasheet
Planetary Geared Stepping Motor

Standard Step motor coupled with a Planetary Gearbox can meet your requirements without going to a larger diameter motor. Available for size 8 up to 23 step motor. more >>