Custom Armature Commutator Manufacturer in China

We manufacture armature commutators for DC motors, DC generators, and universal motors—built to your drawing/spec with engineering review, controlled machining, and documented inspection.

Factory scale: 100 workers · 150 machines · total daily output capacity 500,000 pcs (across commutator families)
Quality system: ISO 9001 process control · batch traceability · inspection records available on request
RFQ response: within 12 business hours
MOQ: from 100 pcs

Instant Quote (12 Business Hours)

Send any of the following:

2D/3D drawing (preferred)
Clear photos + key dimensions
A physical sample (for evaluation)

Please include:

Application (DC motor / generator / starter / universal motor)
OD / ID / height, segment count, commutator type (hook / riser / planar)
Quantity (prototype / pilot / mass production) + destination country
Critical requirements (runout/TIR, insulation test, surface finish, packaging, etc.)
Target delivery date

Accepted file types: PDF, DWG, DXF, STEP, IGS/IGES, X_T, SolidWorks, ZIP/RAR
NDA: Attach your NDA if required—files are handled confidentially.

Precision Armature Commutators by XDC

Explore our comprehensive range of commutators designed for diverse DC motor applications. We offer various configurations including hook, riser, and planar types, with diameters ranging from micro 5.6mm units to industrial 95.4mm components (examples shown).

49 mm OD · 16 segments · Planar (face type)

flat motor structures with axial brush interface

42 mm OD · 28 segments · Cylindrical

stable bore fit and slotted connections for armature winding

95.4 mm OD · 57 segments · Riser type

higher-current industrial / traction-style armatures

5.6 mm OD · 5 segments · Micro hook

compact designs for coreless / precision micro-motor armatures

7 mm OD · 5 segments · Hook type

compact brushed DC motors with reliable tang termination

15 mm OD · 10 segments · Hook type

compact brushed DC motors and small actuators requiring stable commutation and reliable winding termination

370 series DC motor hook commutator

standard hook commutator for 370-size motor assembly

11.4 mm OD · 14 segments · Hook type

commonly used in automotive auxiliaries and power tools

Capability at a Glance (Manufacturing-Ready)

From the product examples on this page, we supply commutators covering:

OD (examples shown): 5.6–95.4 mm
Segment count (examples shown): 5–57 segments
Structures: Hook / Riser / Planar

Need a feasibility check fast? Email your drawing to [email protected] and we’ll reply with a manufacturability review + quote.

We also apply practical manufacturing guidelines during DFM review and production:

Item	Our Standard Manufacturing Controls (Customizable to Your Spec)
Minimum manufacturable segment pitch (typical)	≥ 4.0 mm (typically 3.2 mm copper + 0.8 mm insulation)
Inter-bar / plate insulation thickness	0.6–1.5 mm (typical processing range)
Copper bar material options	High-purity hard-drawn copper; silver-bearing copper (0.03%–0.08% Ag)
Brush coverage design check	Brush coverage typically ≤ 15% of circumference (design verification)
Turned commutator surface finish	Typically Ra 0.4–0.8 μm with strict cleaning
Balancing	Dynamic balancing supported; balancing grades (e.g., G2.5, G1.0) available by requirement
Runout/TIR control	Checked before shipment; targets follow your drawing and inspection method

Quality & Inspection (Procurement-Focused)

We run three-layer control (incoming, in-process, final) to stabilize repeatability and reduce variance. For production orders, we support batch traceability and provide inspection records upon request. Where you define critical characteristics, we align inspection to your parameters and can include records in the shipment document pack.

Standard inspection items we can include

Dimensional inspection (OD/ID/height, segment geometry, bore/fit)
Runout / concentricity checks (per your drawing)
Surface condition verification after turning (Ra and visual appearance as required)
Electrical checks (bar-to-bar checks and resistance consistency per plan)
Insulation verification (IR/Hi-pot per your specified voltage/time criteria)
Balance verification (for high-speed or performance-sensitive designs)

Typical customer specifications we routinely support (confirm during RFQ)

Final acceptance follows your drawing/spec and the agreed inspection plan (method, sampling, voltage/time, pass/fail criteria).

Item	Typical Customer Target Range
Runout / TIR (depends on OD and structure)	0.02–0.05 mm commonly specified
Turned surface roughness (Ra)	0.4–0.8 μm (typical finished range)
Mica undercut depth (when specified)	0.5–0.8 mm typical
Insulation resistance (IR) test level	500 VDC / 1000 VDC commonly specified
Hi-pot (dielectric) test level (LV products)	1000–1500 VAC commonly specified

If you have a tighter runout requirement, special insulation class, or a specific test standard, include it in your RFQ—our team will confirm feasibility and measurement method before quotation.

Documents & Compliance (Available on Request)

For supplier qualification, incoming inspection, and compliance needs, we can provide documents such as:

ISO 9001 quality system documentation (certificate available on request)
2025 Silver and Copper SGS Report (Chinese)
SGS CN6641 Black REACH250 SHAEC25024277117
MSDS CN664120G Bakelite Powder
Copper Material MSDS Report
Technical Report CN6641 JIS(20180208)

If your onboarding requires a specific checklist (supplier survey, inspection templates, declarations), attach it to your RFQ—we’ll align the document pack to your process.

MOQ & Lead Time (Typical Reference)

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 schedule)

What We Manufacture

Hook type commutators (tangs/hooks for winding termination)
Riser type commutators (riser structures for brazing/welding layouts)
Planar / face type commutators (axial brush interface)

Custom commutators built strictly to your drawing or sample

Contact Us for Custom Armature Commutator Projects

If you need a new armature commutator, an upgrade to an existing DC machine, or a matched commutator for a redesigned armature winding, XDC can support you from design review to volume production.

Contact Us (XDC – China):

Please send us your product drawings.
Please inform us of the quantity you require, the materials needed, or any special requirements for packaging, marking, or testing.

Our engineering team will respond with a manufacturable armature commutator proposal, complete with recommended materials and inspection items.

FAQ – Armature Commutator Applications & Maintenance

Here you will find answers to the most common questions regarding our manufacturing processes, ordering details, and quality standards. If you have a question that isn’t listed here, please contact our sales team directly.

Can you manufacture strictly to our drawing and tolerances?

Yes. We build to print. We review the drawing before production, confirm critical characteristics and measurement method, and align the inspection plan to your requirements.

Can you support samples before mass production?

Yes. Sample production and approval can be arranged for most custom projects before mass production.

What should we send for the fastest quote?

Drawing (preferred) or photo + OD/ID/height + segment count + quantity + application basics (voltage/current/speed) + any special requirements (TIR, insulation tests, surface finish, packaging).

Do you support international shipment?

Yes. We ship internationally and support 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.