Sinbo Precision Mechanical Co., Ltd.
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China,Dongguan ,Guangdong
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- Precision Motor Commutator Copper Alloy Machined Parts CNC Machining China
- Product Details
- Company Details
Product Specification
Product Description
As a technician with years of experience in motor component manufacturing, I understand the critical role commutators play in DC motors. Our copper alloy conductive block commutators are made from high-quality purple copper and formed through precision CNC machining, ensuring optimal balance between insulation and conductivity between each commutator segment. Essentially, the commutator acts as a rotating electrical switch that periodically changes current direction to maintain continuous motor operation. Without a commutator, a motor would only rotate less than half a turn before jamming.
Features
- High-Conductivity Material: Uses T2 purple copper or copper alloy for commutator segments with conductivity exceeding 98%, maximizing current transmission efficiency
- Precision Structural Design: Commutator segments feature dovetail bases embedded in insulation sleeves with mica insulation between segments, ensuring stability during high-speed rotation
- Wear and High-Temperature Resistance: Special heat treatment process provides surface hardness of HB80-100, capable of withstanding operating temperatures up to 150°C
- Custom Slot Design: Offers various commutator segment structures including hook-type and slot-type to meet different motor model requirements
- CNC Precision Machining: Utilizes five-axis CNC machining with dimensional tolerances controlled within ±0.01mm, ensuring perfect compatibility with brushes
Technical Parameters Table
Applications
Our commutators are widely used in various DC motors and AC commutator motors, including:
- Automobile Starters: Providing reliable current commutation for high-torque starting
- Power Tool Motors: Equipment such as electric drills and angle grinders requiring high-frequency forward and reverse rotation
- Household Appliances: Core components in small motors for vacuum cleaners, blenders, etc.
- Industrial Motors: Drive motors for industrial equipment like drilling devices and mud pumps
- Micro Special Motors: Miniature motors in precision instruments and automation equipment
Customization Services
We provide comprehensive custom manufacturing services:
- Size Customization: Production of non-standard size commutators according to customer drawings, diameter range 10-300mm
- Material Selection: Various copper alloys including T2, T4, T6 to meet different conductivity and wear resistance requirements
- Insulation Material Customization: Options including mica, epoxy resin and other insulation materials
- Rapid Sample Prototyping: First samples provided within 5 working days of receiving requirements
- Small Batch Trial Production: Support for trial orders of 50-500 pieces to reduce customer development risks
Support and Services
We are committed to providing comprehensive technical support to customers:
- Technical Consultation: Our engineering team offers commutator selection and motor matching advice
- Quality Assurance: Each batch undergoes conductivity, insulation resistance and dynamic balance testing before shipment
- Fast Delivery: 7-10 days delivery for standard products, expedited production for urgent orders
- After-sales Tracking: Regular follow-ups on usage conditions, providing maintenance and replacement guidance
SEO Content for English Version
SEO Title: Precision Motor Commutator Copper Alloy Machined Parts CNC Machining China Precision CNC Machining Services
SEO Keywords: motor commutator copper alloy machined parts CNC machining China precision CNC machining DC motor commutator
SEO Description: Professional manufacturer of copper alloy motor commutators using precision CNC machining technology providing high conductivity commutator customization services for automotive motors power tools and industrial equipment
Precision Motor Commutator: CNC-Machined Copper Alloy Components for Enhanced Electrical Performance
Product Overview
As a technical specialist in motor component manufacturing, I focus on the critical role of commutators in DC and universal motors. The commutator (also known as a rectifier in generators) serves as a rotating electrical switch that maintains consistent torque direction by reversing current flow in the rotor windings. Our copper alloy commutators are engineered for high-speed applications, ensuring minimal energy loss and extended brush life through precision CNC machining. Without a functional commutator, motors would fail to rotate continuously, stalling after partial turns.
Key Features
- Premium Material Selection:
- Made from T2 copper or high-conductivity copper alloys (≥58 MS/m) for efficient current transfer.
- Optional silver-coated segments for reduced contact resistance in high-frequency applications.
- Advanced Structural Design:
- Dovetail-base segments interlocked with insulated sleeves (e.g., mica or epoxy resin) to prevent displacement under centrifugal force.
- Hook-type, slot-type, or planar configurations tailored to brush alignment requirements.
- CNC turning and milling ensure segment tolerances within ±0.01 mm and surface smoothness of Ra0.8.
- Dynamic balancing tested at up to 20,000 RPM to minimize vibration in high-speed motors.
- Heat-treated surfaces achieve HB80–100 hardness, resisting arc erosion and wear from carbon brushes.
- Operating temperature range: -40°C to 150°C (extendable to 200°C with specialized insulation).
Technical Parameters
Applications
- Automotive Systems: Starter motors, fuel pumps, and cooling fans.
- Power Tools: Drills, grinders, and saws requiring rapid direction changes.
- Industrial Machinery: CNC spindle motors, conveyor drives, and pump controllers.
- Household Appliances: Vacuum cleaners, blenders, and washing machine motors.
Customization Services
We support end-to-end customization based on client drawings or specifications:
- Material Alternatives: Oxygen-free copper (C10100) for superior conductivity or chromium copper for elevated temperature stability.
- Prototype Development: 3D modeling and sample delivery within 5 working days.
- Quality Validation: In-house testing for commutation spark levels, segment hardness, and dynamic balance.
Support & Commitments
- Technical Collaboration: Assistance with design optimization for commutation noise reduction.
- Batch Traceability: Full documentation of material certifications and inspection reports.
- Global Logistics: FCA, FOB, or EXW terms with expedited shipping for urgent projects.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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Business Type:
Manufacturer
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Total Annual:
$8million-$ 9 million
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Employee Number:
500~650
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Ecer Certification：
Verified Supplier
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