OEM MOTION CONTROL • ENGINEERED IN SILICON VALLEY
Custom & Standard Motion Control Solutions for Modern OEMs
From stepping motors and BLDC gearmotors to frameless servos and humanoid joint modules, Source Engineering has been powering precision applications for robotics, medical, semiconductor, factory automation, and aerospace teams since 1998.
28
Years in Business
9
Product Categories
100%
Custom Capable
Since 1998
Trusted OEM partner
Custom Engineering
Windings, ratios, mounting
Scalable Production
Prototype to volume
Silicon Valley HQ
Santa Clara, California
Featured Products
Precision engineered. Application ready.
Modular platforms designed for OEMs, configurable for your exact torque, speed, size, and control requirements.
Planetary Gearboxes
- Compact & lightweight footprint
- Low backlash & high accuracy
- Precision-machined efficiency
Frameless Servo Motors
- Low inertia, fast response
- Custom windings & sizes
- High torque density
Humanoid Joint Modules
- Motor, gearbox, encoder, and drive integrated
- Smooth, quiet motion
- Customizable gear ratios and torque
Supply Chain
One US point of contact for your motion program.
US purchasing. Overseas manufacturing cost structure.
Source Engineering gives OEM teams the cost advantages of overseas manufacturing with the simplicity of buying from a US company - one invoice, one warranty, one engineering team to call.
- US-based purchasing, US warranty, and US engineering support
- Import, tariffs, logistics, and customs handled entirely by SEI
- Overseas manufacturing cost structure without the overseas procurement burden
- Engineering resources on both sides of the supply chain
All Product Categories
Nine motion control platforms, configurable for your exact torque, speed, size, and control requirements.
Planetary Gearboxes
Modular, high-torque planetary gearheads for robotics, automation, and precision motion.
Learn moreFrameless Servo Motors
Frameless BLDC rotor/stator assemblies for direct integration into robotic joints and compact servo systems.
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BLDC Servo Motors
Low-voltage 24–48V servo motors with encoder feedback for robotics, automation, and battery-powered systems.
Learn moreHumanoid Joint Modules
Integrated motor, gearbox, encoder, and drive modules for humanoid and collaborative robotics.
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Stepping Motors
Hybrid stepping motors from NEMA 8 through NEMA 42 with 1.8° and 0.9° step angles.
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Brushless DC Gearmotors
High-efficiency BLDC gearmotors with spur, L-type, and right-angle gearboxes.
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Brush DC Gearmotors
PMDC brush gearmotors with parallel-shaft and spiral bevel right-angle configurations.
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Planetary DC Gearmotors
Round helical planetary gearmotors paired with BLDC or PMDC motors for high torque and low noise.
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Worm Gearmotors
Stand-alone and integrated worm gearmotors for compact, high-torque 90° power transmission.
Learn moreEngineering Capabilities
Built to spec, not off-the-shelf.
Nearly three decades of engineering expertise applied to your unique motion challenges.
Custom Windings
Match your voltage, speed, and torque profile precisely.
Integrated Drives
Encoder and servo drive integration in a single module.
Mechanical Design
Custom shafts, mounts, and housings for your assembly.
Prototype to Scale
From proof-of-concept to full production volumes.
Industries Served
Powering innovation across demanding applications.
Our motion control platforms are trusted by engineering teams designing next-generation systems.
Robotics
Humanoid, mobile, and industrial arms
Learn moreMedical Devices
Surgical, diagnostic, and lab automation
Learn moreSemiconductor
Precision positioning and handling
Learn moreFactory Automation
Conveyors, packaging, and assembly lines
Learn moreAerospace & Defense
Reliability under demanding conditions
Learn moreAbout Source Engineering
Silicon Valley motion experts, since 1998.
Enabling design teams to launch better products, faster.
About SEI
Ready to spec your next motion system?
Talk to a Source Engineering application specialist. No obligations, just answers.
Let's build your motion solution.
Send us your application details and our engineers will respond within one business day.
(408) 980-9822 · sales@sei-automation.com
3283-H De La Cruz Blvd., Santa Clara, CA 95054
Mon–Fri, 9:00AM – 5:00PM PST