Frequently Asked Question about Kechen Motor Manufacturing

We mainly offer two types of brush technologies tailored to application requirements:

Precious Metal Brushes: Ideal for compact micro motors operating under low voltage, low current, and low operating noise requirements (e.g., precision medical actuators, optical devices, smart lock modules). They offer lower starting voltage and minimal electrical noise.

Carbon / Graphite Brushes: Preferred for high-current density, heavy-load, high-speed, or continuous operating conditions (e.g., industrial equipment, automotive actuators, high-torque gear motors). They provide significantly extended service life and durability under demanding loads.

Standard micro motors typically operate around the 50 dB(A) range (measured at a distance of 10 cm–30 cm), depending on speed, load, and gear ratio.

For noise-sensitive applications, we provide customized low-noise/silent motor solutions that can further lower noise levels through high-precision gear machining (helical or low-noise plastic gears), coreless/brushless topologies, specialized sleeve/ball bearings, and precise dynamic balancing.

Kechen Motor are used in various industries, including:

• Automotive (window lifts, seat adjusters, smart lock actuators…)
• Home appliances & smart home (mixers, fans, coffee machines, smart curtains, smart locks…)
• Medical & beauty devices (infusion pumps, surgical tools, beauty instruments…)
• Fitness equipment (resistance training machines, reverse thrust devices, pulleys…)
• Power tools (drills, angle grinders…)
• Industrial automation (conveyors, actuators, fiber fusion splicers…)
• Robotics & 3D printing (competition robots, 3D printers, educational robots…)
• Toys & hobby (RC cars, electronic toys…)
• Commercial equipment (vending machines, shared bike locks…)

Customization according to specific industry requirements is also available.

Standard motor configurations generally carry IP40 or IP50 protection. For demanding environments, Kechen Motor designs custom sealing solutions—including shaft oil seals, potted PCBs, custom end-bells, and O-rings—achieving IP65, or specialized waterproof/dustproof standards.

Yes. For both baseline models and customized projects, we provide complete technical documentation, including performance curves (torque, speed, current, and efficiency curves) and 2D/3D CAD models (STEP, IGES, PDF) for design verification.

Kechen Motor maintains a comprehensive series of standard platform models (brushed DC, brushless DC, stepper motors, and coreless motors with planetary/spur gearboxes).

However, as a dedicated OEM/ODM manufacturer, the vast majority of our production is customized to match specific customer mechanical and electrical requirements.

We offer full-spectrum engineering customization:

Mechanical & Transmission: Output shaft configurations (D-cut, knurling, threading, cross-holes, dual-shaft, stepped shafts), gearbox configurations (spur gear, planetary gear, worm gear, lead screws), gear ratios, housing materials, and mounting flanges.

Electrical Performance: Winding parameters (voltage, speed, torque profiles), insulation classes, and custom duty cycles.

Control & Feedback: Integrated magnetic/optical encoders, custom wiring harnesses, connectors, and integrated drive electronics.

Environmental & Sealing: Custom lubricants (high/low temperature), quiet gearheads, and specific IP-rated sealing solutions.

Expected operational lifespan varies based on motor technology, operating load, duty cycle, and ambient conditions:

Micro Brushed Motors: Typically 200 to 500+ hours under rated conditions.

Micro Brushless Motors: Typically 5,000+ hours, limited primarily by bearing longevity.

Quality & Life Assurance Measures:

High-grade component sourcing (precious metal brushes, high-temperature copper windings, premium ball bearings).

Accelerated life testing and environmental simulation during development.

Strict ISO 9001 and ISO 13485 quality control protocols throughout automated production.

Yes. All Kechen Motor products strictly comply with RoHS and REACH environmental standards. Product-specific CE or UL certifications can be provided or arranged based on application and regional regulatory requirements. Our manufacturing facilities operate under ISO 9001 and ISO 13485 quality management systems.

Every production lot undergoes rigorous inspection before dispatch, including:

100% Functional Testing: No-load speed, current, direction of rotation, and noise screening.

Dimensional Inspection: Key critical dimensions verified via precision measuring instruments.

Electrical Safety: Insulation resistance and dielectric withstand (hipot) testing.

Statistical Sampling: Torque/load capability, temperature rise, and dynamic balance checks.

We respect our customers’ proprietary engineering. We sign mutual Non-Disclosure Agreements (NDAs) prior to receiving project technical files. Customer drawings, modified designs, and custom tooling are securely stored and strictly reserved for authorized project use only.

In the event of a non-conformance or quality discrepancy:

Contact your account manager with details and issue samples/videos.

Our engineering team conducts a thorough root-cause analysis (issuing an 8D report within 48–72 hours).

We implement immediate containment actions, including replacement shipments, product rework, or technical adjustments.

As a custom B2B manufacturer, we do not maintain off-the-shelf retail inventory. However, sample units are available for engineering evaluation, prototype testing, and qualification.

Sample Orders: No strict MOQ (typically 3–20 units for engineering verification).
Mass Production: Standard MOQ generally ranges from 200 to 1,000 units, depending on the motor model and customization complexity.

Because our micro motors are customized to exact technical requirements (voltage, speed, gear ratio, shaft profile, volume), we do not publish a general price list. To receive a fast quote, please provide your target specifications:

Operating voltage, target speed (RPM), and required torque
Dimensional constraints
Estimated annual quantity
Application details or special requirements

We accept:

T/T (Telegraphic Transfer) – our most common payment method
PayPal for small sample payments

A 50% deposit is required before production, with the balance due before shipment.

Samples: 7–15 working days (depending on customization requirements).

Mass Production: 3–4 weeks after sample approval and official Purchase Order (PO) receipt.

We cooperate with international logistics companies and support:

• International express (DHL, FedEx, UPS) – 3–5 days, door-to-door
• Air freight – 7–10 days to major airports
• Sea freight – 20–30 days (FCL or LCL)

Delivery is available to any country or region worldwide. Please advise your preferred method and we will arrange the most suitable shipping solution.

If initial sample testing shows performance deviations or changes in your project requirements, our engineering team will review the test data, adjust component specifications (e.g., winding density, gearing, brushes), and provide re-engineered samples for secondary testing.

Motors are packed in custom anti-static (ESD) trays or vacuum blister shells, protected by high-density protective foam inside reinforced export cartons. Cartons are palletized and wrapped for bulk shipments to prevent shock or moisture damage during transit.

Yes. We provide laser engraving, custom barcode/QR code labels, customer part numbers, and custom brand labeling directly on the motor housing or product packaging per OEM requirements.

We ship globally to over 50 countries across North America, Europe, Asia-Pacific, South America, and the Middle East. Delivery methods include:

Express Air: DHL, FedEx, UPS, TNT (for samples and urgent orders)

Air Freight / Sea Freight: FCL & LCL

Incoterms: EXW, FOB, CIF, DDP, or DAP based on customer preference.

Yes. Kechen Motor provides complete export documentation, including Commercial Invoices, Packing Lists, Bills of Lading, HS Code classifications, and Certificates of Origin (e.g., CO, Form E).

Yes. Kechen Motor regularly exports industrial drive components worldwide, ensuring full compliance with international trade standards, customs entry requirements, and regional shipping protocols.

Yes. Once your order enters production or is dispatched, your dedicated account representative will provide regular status updates along with tracking numbers (for express/air freight) or shipping schedules (for sea freight).

Mechanical: Avoid high axial or radial impact force on the output shaft during press-fitting (use proper back-support tools). Ensure mounting screw insertion depth complies with drawing limits to prevent internal damage.

Electrical: Verify correct operating voltage and terminal polarity before powering on.

Most standard micro motors and gearheads from Kechen Motor are pre-lubricated with high-performance synthetic grease and designed for maintenance-free operation throughout their rated service life. Keep the operating environment within specified ambient temperature/humidity ranges and protect non-sealed motors from excessive dust or moisture.

Our technical sales engineering team responds to all formal inquiries, technical requests, and RFQs within 12 to 24 hours on working days.