Custom Commutators for DC Machines
XDC manufactures custom commutators for DC machines based on your drawings, samples, and application requirements. We support OEM/ODM projects, replacement parts, and new product development with engineering review, consistent production control, and fast quotation response.
- Custom sizes, segment counts, and structures
- Drawing / sample-based manufacturing
- File upload supported (PDF, DWG, DXF, STEP, IGS, X_T, SolidWorks, ZIP/RAR)
- Engineering review before production
- Quote response within 12 business hours
Commutators for DC Motor and Generator Applications
XDC supplies custom commutators used in a wide range of DC machines, including DC motors, DC generators, starter motors, power tools, industrial drives, and other rotating electrical equipment.
Our commutators are manufactured to match your required dimensions, electrical design, and operating conditions. Whether you need a replacement part or a new custom design, our engineering team can review your specifications and provide a manufacturable solution.
Commutators for DC Motor and Generator Applications
- DC motor commutators (small motors, industrial motors, special motors)
- DC generator commutators
- Starter motor commutators
- Power tool motor commutators
- OEM custom assemblies
- Replacement commutators for maintenance and repair
Commutator Types We Support
We support multiple commutator structures and insulation configurations for different DC motor and DC generator applications. The suitable type depends on electrical load, speed, brush system, installation structure, and service-life target.
Custom Hook Type Commutators
Precision 14-segment hook commutator featuring 11.4mm OD. Expertly customized for motor applications. Existing molds are available to save tooling costs for this specific dimension.
10-Segment Hook Type Commutator
Engineered with a 15.2mm OD and 10 segments, this hook-type unit ensures superior conductivity and structural integrity. Ideal for high-performance DC motor manufacturing and custom assembly.
3-Segment Right-Angle Commutator
Featuring a specialized 3-bar configuration with right-angle tangs for secure wire bonding. Designed for high-speed micro motors requiring compact dimensions and reliable electrical transmission.
7.6mm 3-Segment Hook Commutator
Designed with a 7.6mm OD and 3 segments, this component provides excellent high-speed stability. It ensures efficient current commutation and is compatible with various micro DC motor assemblies.
15mm 10-Segment Hook Commutator
Precision-engineered with a 15mm OD, this 10-slot unit offers exceptional dimensional stability. It is designed to handle high rotational speeds while ensuring minimal sparking and extended motor life.
Miniature 2.9mm Hook Commutator
Featuring an ultra-compact 2.9mm OD, this 3-segment component is precision-crafted for micro and coreless motors. It delivers stable performance in the smallest electromechanical applications.
6-Slot Compact Hook Commutator
Featuring a 6.5mm OD and 6-segment design, this component offers excellent rotational balance and thermal stability. Built to ensure consistent contact and longevity in diverse DC motor applications.
7mm 5-Slot Hook Commutator
With a standard 7mm OD and 5-bar configuration, this commutator delivers a perfect balance of torque and speed. Constructed for high mechanical endurance in demanding motor environments.
Custom Commutator Manufacturing Based on Drawings or Samples
We manufacture commutators according to your technical requirements. If you already have a drawing, send it to us for review. If you only have a sample part, we can evaluate it and support reverse-engineering discussion based on manufacturability and application needs.
What We Can Customize
• Outer diameter (OD)
• Inner diameter (ID)
• Height / overall length
• Segment quantity
• Segment geometry
• Hook / riser structure
• Bore / shaft fit dimensions
• Insulation structure
• Material selection (based on application)
• Surface finish and assembly requirements
Drawing & File Formats Accepted
• PDF
• DWG / DXF
• STEP / STP
• IGS / IGES
• X_T
• SolidWorks files
• ZIP / RAR (multiple files)
If your file format is not listed, send it anyway and our team will confirm.
Manufacturing Capability and Tolerance Control
Our engineering team reviews each drawing or sample to confirm manufacturability, critical dimensions, tolerance strategy, inspection points, and acceptance criteria before production. Tight tolerances and geometric controls (such as runout or concentricity) are supported based on part design, process selection, and inspection method.
Dimensional & Geometric Control (Typical Approach)
- Tolerances are confirmed per drawing and verified through defined inspection points
- Critical fits (shaft/bore, assembly interfaces, brush contact surfaces) receive focused control
- Runout / concentricity requirements are confirmed before quotation when specified
Please send your drawing and mark critical dimensions and acceptance criteria so we can confirm capability and inspection method before production.
Designed for Stable Commutation and Reliable Service Life
A commutator is a critical component in DC machines. Its performance directly affects current switching, brush contact stability, spark behavior, and overall motor/generator reliability.
At XDC, we focus on manufacturing consistency and process control to help customers achieve:
- Stable brush contact performance
- Consistent segment geometry
- Reliable insulation integrity
- Good dimensional repeatability
- Better suitability for production assembly and maintenance replacement
Final performance depends on the full motor/generator system design, brush material, spring pressure, operating speed, load profile, and assembly accuracy.
Materials and Manufacturing Process
We use application-appropriate raw materials and controlled production processes to meet customer requirements for conductivity, mechanical strength, and insulation performance.
Material Options
- Copper segment materials selected according to electrical and mechanical requirements
Common options include silver-bearing copper (CuAg series) and oxygen-free copper (OFHC), as well as other copper grades where required. - Insulation materials selected according to temperature and operating conditions
Common options include mica insulation and resin-based insulation structures, depending on commutator type and duty conditions. - Structural components designed for mechanical stability
- Material selection based on current load, speed, duty cycle, and service life target
Process Control
- Precision machining / forming
- Segment assembly
- Insulation processing
- Heat treatment
- Dimensional inspection
- Runout / concentricity checks
- Final visual and quality checks before shipment
If you have special requirements (high speed, high current, temperature resistance, compact structure, etc.), please include them in your RFQ.
Quality Control for Repeatable Production
We understand that commutators are not generic parts. Small dimensional differences can affect assembly fit and performance. That is why we review drawings carefully and apply inspection controls during production.
Our Quality Approach
- Drawing review before production
- Critical dimension inspection
- Incoming material checks
- In-process quality inspection
- Final inspection before packing
- Batch traceability
Inspection / Test Capability
- Dimensional measurement
- Runout / concentricity inspection
- Visual defect inspection
- Electrical / insulation checks
- First article inspection (FAI) support for custom projects
Documents We Can Support
- Dimensional inspection report
- Material certificate
- First article inspection (FAI)
- Sample approval before mass production
- Packing list / commercial invoice / export documents
Why Customers Choose XDC for Custom Commutators
At XDC, we don’t just sell a commutator in DC machines and walk away. We build parts that make your life easier on the shop floor. If your project depends on a reliable DC machine commutator, XDC is the team you call when you want it done right the first time.
Engineering Communication First
We do more than collect part numbers. We review dimensions, structure, commutator type, and application details to reduce production risk and avoid repeated revisions.
Custom Manufacturing, Not One-Size-Fits-All
Every project has different requirements for size, segment count, current load, insulation structure, and installation fit. We manufacture according to your specifications instead of forcing a standard part.
RFQ-Friendly Workflow
You can send a drawing, 3D model, or even sample photos. Our team will confirm what is needed and respond with a quotation or technical questions quickly.
Support for OEM and Replacement Projects
We support both new development projects and replacement commutators for maintenance, repair, and legacy equipment.
Export-Oriented Service
We support international communication, documentation, and shipment coordination for overseas customers.
Quality and Documentation Support
For custom projects, we can support sample approval, FAI, inspection records, and export documentation to improve purchasing confidence and reduce approval risk.
Certifications and Compliance
We support quality documentation and compliance requirements for international customers. If your project requires specific certifications, supplier qualification materials, or compliance documents, please mention it in your RFQ so we can confirm availability for your product and scope.
Common requests we support (project-dependent):
- Quality system documentation and process control records
- Material documentation and traceability information (where applicable)
- RoHS / REACH-related material declarations for applicable products and materials (upon request)
- Customer-specific supplier onboarding documents (upon request)
How to Get a Quote Faster
To receive an accurate quotation quickly, please provide as much of the following information as possible:
- Application (DC motor / DC generator / starter / other)
- Drawing or 3D file (preferred)
- Key dimensions (OD, ID, height)
- Segment quantity
- Commutator type (Hook / Riser / Mica insulated / Resin molded / Unknown)
- Required quantity (sample / batch / annual demand)
- Operating conditions (voltage, current, speed, duty cycle)
- Special requirements (temperature, insulation, tolerance, packaging, etc.)
- Target delivery date
- Destination country
RFQ Tip
The more complete your information is, the faster and more accurate the quotation will be.
If you only have a sample part or photos, send them first. We will guide you on the next step.
MOQ and Lead Time (Typical)
The final MOQ and delivery time depend on part complexity, tooling requirements, and order quantity. Typical reference values are:
Item | Typical Reference |
MOQ | from 100 pcs |
New tooling | about 40–45 days (if tooling is required) |
Production lead time | about 15 days after sample/tooling approval (depends on quantity and production schedule) |
Please contact us for a confirmed timeline based on your drawing and quantity.
Contact Us
Ready to upgrade or replace your commutator in DC machines?
XDC – China’s Premier Commutator Manufacturer
- Send us your drawing
- Please let us know any additional requirements you have for the commutator
- Receive a clear technical proposal, price and lead time for the right commutator DC solution
Reach out via email or phone, or upload your specifications through our online form. XDC is ready to support your motors, generators and universal machines with industrial-grade commutators that keep your DC drives running at their best.
WhatApps
+86 17820674273
Address
Taixing Science and Technology Park, No. 3 Taixing Road, Dongguan City, Guangdong Province
Frequently Asked Questions
A commutator is a rotating electrical component used in DC motors and DC generators. It works with brushes to switch current direction in the armature circuit so the machine can maintain the correct torque or output behavior.
The basic principle is similar, but the design details can differ based on electrical load, speed, structure, brush system, and application requirements. The right commutator should be selected according to the actual machine design.
Yes. We support custom manufacturing based on drawings, 3D files, and samples. Send your files and application details for engineering review.
Yes. In many cases, we can evaluate a sample and discuss reverse-engineering support. Please send photos and key dimensions first.
We accept PDF, DWG, DXF, STEP, IGS/IGES, X_T, SolidWorks files, and compressed files such as ZIP/RAR.
We typically respond within 12 business hours. Complex projects may require additional technical review.
Typical MOQ starts from 100 pcs, but the actual MOQ depends on product structure and process. Please send your drawing for confirmation.
Lead time depends on whether tooling is needed, part complexity, and quantity. Please contact us with project details for a confirmed production schedule.
Yes, sample production and approval can be arranged for most custom projects before mass production.
Yes. We support international shipment and export documentation for overseas customers.
Related Resource
At XDC, we share our deep insights into commutators, manufacturing processes, and industry experience on our blog. We invite you to explore these articles to learn more about our expertise.
Commutator Sparking and Wear: Why Brushes Must Align With the Motor Neutral Plane
The motor neutral plane is the running position where the coil under the brush can reverse current with the…
DC Motor Squealing Noise: Is It the Carbon Brush or the Commutator?
When a DC motor starts squealing, most people replace the brushes first. Sometimes that works. Sometimes the noise goes…
How to Check a Commutator for Roundness or Runout
Most bad readings start before the indicator touches copper. That is usually the whole job, really. Not the gauge.…
