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Round-head threaded shaft DC motor
Zhejiang Ouyuan Micromotor Co., Ltd. is a professional DC motor manufacturer headquartered in Jiaxing, Zhejiang Province, China. Originally established in 2000 as Jiashan Ouyuan Micro Motor Co., Ltd., the company completed its shareholding reform and rebranding in 2019, marking a new phase of accelerated growth. With over two decades of focused experience in permanent magnet motor technology, Ouyuan has built a vertically integrated production system covering injection molding, precision hardware, winding, assembly, and quality inspection—all under one roof. The annual output exceeds 500,000 motor sets, and the company holds more than 50 patents in motor design and manufacturing processes.
Permanent magnet brushed DC motors remain one of the most widely adopted motor types across consumer and light-industrial products, owing to their simple drive circuit, reliable torque delivery at startup, and cost efficiency at scale. Unlike AC induction motors, a brushed DC motor delivers full rated torque from zero speed without requiring a separate starter circuit, making it the preferred choice in applications where direct load engagement is critical—such as massage rollers, handheld vibration tools, and compact food processing equipment.
From a technical standpoint, the working principle of a brushed DC motor relies on the interaction between the current-carrying armature windings and the static permanent magnetic field produced by the stator's magnetic tiles. Carbon brushes maintain sliding electrical contact with a segmented copper commutator, which alternates the current direction in successive armature coils to sustain continuous rotation. This commutation mechanism is entirely self-contained and requires no external controller for basic operation, though external pulse-width modulation (PWM) speed controllers can be integrated for variable-speed applications.
Speed regulation in a brushed DC motor follows a straightforward relationship: output speed (RPM) is proportional to the applied terminal voltage minus the voltage drop across the brush-commutator interface and winding resistance. For a given load torque, reducing the supply voltage linearly reduces speed. Ouyuan's brushed motors across their product line support voltage inputs ranging from 12 V to 220 V depending on the series, accommodating both battery-powered portable devices and mains-connected household appliances.
Ouyuan's brushed motor lineup is organized by motor frame diameter (in millimeters), spanning sixteen distinct series to address a wide spectrum of torque, speed, and physical envelope requirements. Each series offers multiple sub-models differentiated by shaft configuration—single-ended, double-ended, threaded, or PP (polypropylene) plastic-head—to suit specific mechanical mounting and coupling needs.
The 42 series is the most compact brushed motor group in the lineup, built around a 42 mm outer diameter frame fabricated from high-grade seamless precision steel tubing. The flagship model ZYT-42SF-1 delivers 20 W at 24 V with a rated speed of 3,500 RPM, a rated current of 1.1 A, and an output torque of 0.055 N·m at 70% efficiency. The non-standard square head configuration on this model is specifically designed for direct integration into compact handheld massager bodies.
The 46 series introduces dual-output shaft configurations, including the ZYT-46SF-20-3 dual-PP-head threaded shaft model and the ZYT-46SF-32 square-head PP threaded shaft model. These designs are particularly suited for bilateral load applications such as walking mechanisms in massage chairs, where simultaneous symmetric force output from both shaft ends is mechanically advantageous.
The 50 series is the most extensive product group in the brushed motor catalog, covering twelve or more sub-models. This series spans a broad range of shaft designs—including square head, round head, long shank, short shank, double-threaded, and center-mount configurations. The 50 mm frame provides an optimal balance between power density and physical size for mid-range massager and household appliance applications.
Beyond the 50 series, Ouyuan manufactures brushed motors in progressively larger frames including the 51 series, 52 series, 54 series, 58 series, 60 series, 63 series, and 68 series—each targeting higher torque requirements. The upper end of the range, including the 76 series, 77 series, 82 series, 83 series, 101 series, and 102 series, serves high-load applications such as treadmill drive systems and professional massage chair full-body mechanisms.
When evaluating a brushed DC motor for product integration, the following parameters are essential to review against application requirements.
Rated Power (W) defines the continuous mechanical output the motor can sustain without exceeding thermal limits. Ouyuan motors in the small-frame series typically deliver 20 W to 60 W, while large-frame motors can reach significantly higher output levels for drive-intensive equipment.
Rated Voltage (V) specifies the nominal supply voltage at which all published performance figures are valid. Operating above rated voltage accelerates brush and commutator wear; operating below it reduces output speed proportionally. The broad 12 V to 220 V design range across the Ouyuan catalog allows selection for both DC low-voltage battery systems and rectified AC power supplies.
Rated Speed (RPM) indicates the shaft rotation speed under rated load at rated voltage. Ouyuan brushed motors cover a wide speed range, with compact massage tool motors commonly rated between 3,000 and 6,000 RPM, and lower-speed models used where direct-drive mechanical advantage is preferable to a gearbox.
Rated Torque (N·m) and Rated Current (A) are closely coupled parameters. Torque output is directly proportional to armature current (T = K × I, where K is the motor torque constant), so knowing rated current allows calculation of peak torque at stall and helps select appropriate fuse or current-limit protection circuitry.
Efficiency (%) represents the ratio of mechanical output power to electrical input power. Solid copper armature windings—used throughout Ouyuan's product line—reduce resistive losses compared to aluminum alternatives, directly improving efficiency and reducing heat generation under sustained load. The three-layer high-density molecular lacquer coating applied to the copper winding also provides thermal insulation between coil turns, raising the winding's dielectric strength and extending operational lifespan in humid or thermally demanding environments.
High-quality permanent magnetic tiles in the stator produce a stronger and more uniform radial magnetic field, which translates directly into higher torque density, more linear torque-speed curves, and reduced torque ripple—all beneficial for massager applications where smooth vibration output is a product quality differentiator.
Ouyuan's production facility operates under three internationally recognized management systems: ISO 9001 Quality Management System, ISO 45001 Occupational Health and Safety Management System, and ISO 14001 Environmental Management System. This triple certification demonstrates a commitment that extends beyond product quality to encompass worker safety and responsible environmental practices throughout the manufacturing process.
In addition to management system certifications, Ouyuan holds national and provincial recognition including the designation of National High-tech Enterprise, Small and Medium-sized Technology Enterprise of Zhejiang Province, High-tech R&D Center of Jiaxing City, and Enterprise Technology R&D Center of Jiashan County. These recognitions are awarded based on verified R&D investment ratios, intellectual property holdings, and technology innovation output—providing third-party validation of the company's engineering capabilities. With over 50 granted patents covering motor structural designs and manufacturing process innovations, the technical differentiation embedded in Ouyuan's products is documented and protectable.
Each motor is constructed using seamless precision steel tubing for the main housing, providing inherent moisture resistance, corrosion resistance, and structural integrity without requiring additional protective coatings on the external shell. The use of solid copper commutators (rather than composite materials) ensures lower contact resistance at the brush-commutator interface, contributing to both efficiency and longevity.
Ouyuan's brushed motor products serve as the drive core for a diverse range of end products, all of which demand compact size, reliable torque, and cost-effective production.
In the massage and wellness sector, these motors power rolling, stick-type, tuina, and healthcare massagers, as well as the kneading, walking, tapping, and 3D mechanisms within full-featured massage chair motors. The shaft configuration variety across Ouyuan's series—square head, round head, PP plastic head, and custom non-standard geometries—allows mechanical designers to optimize how the motor interfaces with eccentric cams, gear reducers, or direct-drive rollers within the massager assembly.
In sports and fitness equipment, the treadmill motor application demands sustained high-current operation, consistent belt drive speed under variable user load, and resistance to vibration-induced fatigue. Ouyuan's larger-frame brushed motors are engineered specifically for this environment, with winding insulation and commutator materials selected for thermal stability under continuous duty cycles.
In small household appliances, brushed DC motors from Ouyuan are used in hair dryers, electric shavers, vacuum cleaners, food mixers, cooking machine motors, and document shredders. These applications share a common requirement for compact motor envelopes and low acoustic noise, both of which are addressed through precision balancing of the rotor assembly and tight manufacturing tolerances on commutator surface finish.
For rehabilitation equipment, the low-voltage brushed motors provide safe, controllable actuation in devices that interact directly with patients, where stable speed under variable resistance and predictable electrical behavior simplify safety circuit design.
Ouyuan also manufactures a full range of brushless motors for applications where longer service life, lower electromagnetic interference (EMI), or higher efficiency at light loads are primary requirements. However, for many mid-tier consumer products, brushed DC motors remain the technically and economically optimal choice.
Brushless motors eliminate mechanical commutation by using electronic commutation via an external three-phase driver circuit (typically a MOSFET-based inverter with Hall sensor feedback), which adds system cost and design complexity. Brushed motors, by contrast, self-commutate through the brush-commutator assembly, enabling simpler wiring, direct voltage-to-speed control without a separate driver IC, and straightforward forward/reverse direction switching by polarity reversal. For products with defined service life targets (typically 500 to 2,000 hours in consumer appliance contexts) that do not justify the cost premium of brushless technology, brushed motors offer superior value proposition.
Designers evaluating this trade-off should note that Ouyuan's brushed motor solder tab wiring interface supports easy connection to an external PWM speed controller, enabling proportional speed control within the brushed motor's operating envelope without requiring full brushless motor system complexity.
One of Ouyuan's core service offerings is the acceptance of custom and non-standard motor orders. Customers can specify shaft length, shaft diameter and thread pitch, terminal connection type, voltage rating, target speed and torque at rated load, insulation class, and housing finish. The company's integrated supply chain—from injection-molded end bells and PP shaft components to wound armatures and precision-machined commutators—allows modifications at multiple stages of the production process without outsourcing bottlenecks.
For procurement teams qualifying a new motor for a product line, Ouyuan provides sample units with full dimensional drawings and electrical test data. Volume production is supported through a mature ERP-based scheduling system, with annual capacity exceeding 500,000 motor sets to accommodate both mid-volume project orders and high-volume serial supply contracts.
Prospective customers with specific performance targets or mechanical envelope constraints are encouraged to visit the contact page to submit technical requirements directly to the engineering team. For an overview of the complete product catalog beyond brushed motors—including motor components and heating elements—the full product directory is available for reference. Company background, facility information, and certification documentation are detailed on the about us page.
