OEM MOTION CONTROL • ENGINEERED IN SILICON VALLEY
Custom & Standard Motion Control Solutions for Modern OEMs
From stepping motors and BLDC gearmotors to frameless BLDC 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
13
Product Categories
100%
Custom Capable
Since 1998
Trusted OEM partner
Customization First
Affordable custom programs, machined samples
Scalable Production
Prototype to volume
Silicon Valley HQ
Santa Clara, California
Featured Products
Precision engineered. Application ready.
Cost-effective planetary gearheads give your design the strength and precision it needs - without stretching your budget. Impressive torque density, compact size, and reliability without the premium cost of high-end planetary systems. Across our featured platforms, configure torque, speed, size, and control for your OEM program.
Planetary Gearboxes
- Modular, customizable design: multiple stages, gear ratios, lengths, shafts, and mounting options
- Compact and lightweight footprint for space-limited applications
- Exceptional efficiency from precision-machined geartrains
- Low backlash and high accuracy for positioning and motion control
- Evenly distributed forces reduce wear and extend operating life
- SB, SBR, Economy, and AGV series platforms available
Frameless BLDC Servo Motors
- Direct integration: rotor/stator fits your own housing
- Low inertia design for fast acceleration and precise positioning
- Custom windings and sizes to match speed, voltage, and torque
- Quiet, smooth operation
- Durable construction, premium materials
- High torque density in the smallest possible footprint
Humanoid Joint Modules
- Fully integrated architecture - motor, gearbox, encoder, and drive in one module
- Precision encoders: absolute or incremental feedback
- Smooth, quiet motion for human-robot interaction
- Real-time control: high-speed communication interfaces
- Efficient thermal management under continuous high load
- Customizable gear ratios, torque, windings, and interfaces
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
13 motion control platforms - what each one does, in one place.
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Gearboxes
Planetary Gearboxes
Cost-effective planetary gearheads with the strength and precision you need - torque density, compact size, and reliability without the premium cost of high-end systems.
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Servo Motors
Frameless BLDC Servo Motors
Frameless BLDC rotor/stator assemblies for direct integration into robotic joints and compact servo systems.
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Servo Motors
BLDC Servo Motors
Low-voltage 24–48V servo motors with encoder feedback for robotics, automation, and battery-powered systems.
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Joint Modules
Humanoid Joint Modules
Integrated motor, gearbox, encoder, and drive modules for humanoid and collaborative robotics.
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Stepping Motors
Stepping Motors
Hybrid stepping motors from NEMA 8 through NEMA 42 with 1.8° and 0.9° step angles.
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Gearmotors
Brushless DC Gearmotors
High-efficiency BLDC gearmotors with spur, L-type, and right-angle gearboxes.
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Gearmotors
Brush DC Gearmotors
PMDC brush gearmotors with parallel-shaft and spiral bevel right-angle configurations.
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Gearmotors
Planetary DC Gearmotors
Round helical planetary gearmotors paired with BLDC or PMDC motors for high torque and low noise.
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Gearmotors
Worm Gearmotors
Stand-alone and integrated worm gearmotors for compact, high-torque 90° power transmission.
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Gearmotors
AC Gearmotors
Induction AC gearmotors in parallel-shaft and right-angle configurations from 6W through 200W.
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Gearboxes
RV / Harmonic Reducers
Strain-wave harmonic and RV cycloidal reducers for compact, high-ratio precision motion.
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Motors
Brush DC Motors
PMDC brush motors from 31mm through 130mm with custom windings, shafts, and encoder options.
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Motors
Brushless DC Motors
Cost-effective BLDC motors in round and square frames from 28mm through NEMA 34 for high-volume OEM programs.
Engineering Capabilities
Customization is our differentiator.
We keep parts costs competitive so tailored motion solutions stay within reach - and we machine samples so you can validate before you scale. Special Projects and integrated subassemblies are available when you need a partner to deliver a tested motion module, not just a component.
Affordable Customization
Competitive component costs make custom windings, ratios, and mechanics practical for OEM budgets.
Machined Samples
Evaluate fit, form, and performance with machined samples before production commitment.
Custom Windings & Mechanics
Voltage, speed, torque, shafts, mounts, and housings matched to your assembly.
Special Projects & Subassemblies
Motor–gearbox–encoder integration and non-standard assemblies delivered ready for your machine.
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.
Customization is how we compete - cost-efficient custom programs and machined samples that help OEM teams move from concept to production with confidence.
About SEI
Resources
Design smarter with our engineering resources.
Guide to Planetary Gearboxes
A complete engineering reference: ratios, staging, backlash, mounting, and application selection.
Product Catalogs
Detailed specifications, dimensions, and performance data for our full product line.
Assembly Instructions
SB/SBR one-stage assembly drawings and gearbox–motor matching notes.
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 · [email protected]
3283-H De La Cruz Blvd., Santa Clara, CA 95054
Mon–Fri, 9:00AM – 5:00PM PST