Why Choose Maintex as Your Small Permanent Magnet Stepper Motor Supplier ?

1.Custom design drawings can be provided within 3 days
2.200+ patent
3.2-year warranty (70-person R&D team,offering remote support)
4.Support OEM/ODM
5.Provide certificates and test reports, such as ISO9001, IATF 16949, CE, ROHS, REACH and so on.
6.Collaborated with fortunne 500 companies 
7. MOQ:2000PCS (Custom samples upon request)
8. 24-hour on-line service
9.All motors can be customized in torque/voltage/size etc.Pls contact us for more details and requirements

Advantages of 2 Phase Small Permanent Magnet Stepper Motor

 Precise positioning, powerful torque smooth operation, low noise, long service life

1. Precise Positioning: Unmatched Control Within a Hair's Breadth
   The micro stepper motor is controlled by pulse signals, with each pulse corresponding to a fixed angular displacement, enabling precise motion without cumulative error. This makes it an irreplaceable core component in dot matrix printers, ensuring every movement is accurate and faultless.
2. Strong Torque, Stable Output
   It delivers powerful holding torque even at low speeds and in a stationary state, ensuring stable stoppage under load. It easily overcomes static friction, simplifying the transmission structure and enhancing system rigidity and response speed. This provides the dot matrix printer with ample force to strike through multi-part forms, guaranteeing clear, consistent print quality.
3. Smooth and Quiet Operation
   Micro-stepping drive technology transforms discrete "stepping" motion into smooth, continuous movement. This effectively minimizes vibration and jerky motion during operation, thereby protecting the mechanical structure and enhancing print quality.
4. Low-Noise Design for Quiet Operation
   Operational noise is a key indicator of modern equipment quality. By smoothing current control, vibration and noise are suppressed at the source. This allows integrated equipment, like office printers, to run more quietly, significantly improving the user experience and the working environment.
5. Long Lifespan and High Reliability
   Featuring a brushless design and simple mechanical structure, the motor experiences minimal wear on its core components. It supports ultra-long, continuous, and stable operation, substantially reducing maintenance costs and downtime.

Why do door lock use Small Permanent Magnet Stepper Motor with an 18° step angle instead of hybrid stepper motors?

The working mode of a smart door lock motor is "point-to-point" position control: it rotates a fixed angle (e.g., 90 or 180 degrees) from position A (bolt retracted) to position B (bolt extended), or vice versa. The entire process requires:

Precise stopping: It must stop exactly at point B—neither overshooting nor falling short.

Sufficient torque: It must overcome the resistance of the bolt spring and friction.

Absolute reliability: It must perform consistently, several times a day, day after day, for years.

Choosing a small stepper motor with an 18° step angle is a carefully considered decision in smart door lock engineering, perfectly balancing control accuracy, drive complexity, cost, and reliability. It abandons the complex approach of "using high-precision chips to drive high-precision motors."

DC 5v 15mm Small Permanent Magnet Stepper Motor: Powerful Torque, consistent Output

Rock-Solid Performance from Low to High Speeds: The Reliable Torque of the 15BY25 Motor.

When faced with sudden load impacts during high-speed operation, ordinary motors often experience torque fluctuations, leading to loss of precision. However, the 15BY25  stepper motor, leveraging two core technologies, delivers rock-solid stable torque from standstill to high speed, whether under smooth or shock loads, providing unparalleled power reliability for your equipment.

1. Optimized Gear Geometry: A Power Transmission Bridge with >95% Efficiency
We don’t just design gears—we sculpt an efficient, low-loss power transmission bridge.

• Precision Tooth Profile Design: Computer-optimized simulation ensures maximum contact area and even stress distribution during gear engagement, fundamentally reducing power transmission gaps and losses.
• >95% Transmission Efficiency: This means the force generated by the motor is delivered to the load with almost no loss. Every bit of torque your equipment receives is more "real," with more direct response, effortlessly handling sudden shocks and ensuring smooth and precise operation.

2. High-Performance Magnetic Steel: The Solid Foundation for Stable Torque
We understand that exceptional performance doesn’t rely solely on rare materials. The 15BY25  uses high-performance magnetic steel, optimized through special formulations and processes, with meticulous electromagnetic design to maximize its potential.

• Stable and Reliable Magnetic Field: The combination of optimized magnetic circuit design and carefully selected magnetic steel creates a sufficiently strong and stable air gap magnetic field, ensuring smooth torque output.
• Outstanding Performance Across All Speeds: From startup to high speed, this optimized magnetic steel ensures consistent and stable motor torque, effectively preventing torque drop or loss of steps due to sudden load changes.
• Perfect Balance of Cost and Performance: This choice highlights our superior design capability, allowing us to provide a highly reliable and cost-effective motor solution without relying on expensive rare-earth materials.

The powerful combination of these two core technologies forms the impeccable performance foundation of the 15BY25 the high-efficiency transmission system ensures lossless power and rapid response, while the optimized magnetic steel and circuit provide a stable and reliable torque foundation. This fully demonstrates our engineering philosophy of enhancing the performance of standard materials through sophisticated design, offering you absolute composure in the face of complex working conditions and a high cost-performance choice.

Why do small stepper motors use copper coils?

The use of pure copper windings is key to ensuring motor performance and reliability. Its main advantages can be summarized in the following four points:

1. Higher Efficiency, Greater Energy Savings
   Pure copper has low electrical resistance, generating less heat during operation and converting more electrical energy into driving force, resulting in higher efficiency.
2. Stronger Torque, Enhanced Power
   Low resistance allows for higher instantaneous current, generating a stronger magnetic field, thereby delivering greater torque during startup and low-speed operation.
3. Longer Lifespan, Improved Durability
   Pure copper offers excellent thermal conductivity and low heat generation, enabling rapid heat dissipation and effectively preventing motor burnout due to overheating, significantly extending service life.
4. Stable Performance, Greater Reliability
   Copper material has superior mechanical strength compared to aluminum. Under prolonged high-temperature and high-vibration conditions, pure copper windings are less prone to deformation or breakage. Additionally, the soldering between copper and lead wires is more robust and reliable, effectively preventing motor failure caused by weak solder joints or broken wires. This ensures stable performance throughout the motor's entire lifecycle.

What are the customizable options for Small Permanent Magnet Stepper Motor?

To meet your specific stepper motor requirements, we offer in-depth customization services, providing precise adaptation for your unique applications. Our customization scope includes, but is not limited to, the following areas:

1. Voltage Range: Flexible voltage options ranging from 3V to 24V make this motor suitable for projects with diverse power needs.
2. Phase Options: Available in 2-phase and 4-phase configurations, allowing selection based on the control system requirements.
3. Resistance: Customizable from 3.5Ω to 110Ω, enabling performance adjustments based on specific application needs.
4. Speed Variations: Adjustable from 30rpm to 3000rpm, making it ideal for both high-precision and faster applications.
5. Torque Range: Configurable torque between 3Kgf.cm to 1200gf.cm, suitable for projects with varying force requirements.
6. Connector Types: 4-pin and 5-pin connectors in multiple sizes (1.25mm, 1.5mm, 2.0mm, 2.5mm), fitting diverse wiring setups.
7. Wire Length: Customizable wire lengths from 40mm to 1000mm for easy installation in different environments.
8. Step Angle Choices: Step angles of 3.75° or 18° are available for precision tuning
9. At Maintex, we offer a range of customization options for the 15BY25 Stepper Motor, [Click here to learn more about customization options] like wiring and connectors, installation holes, gears, and logo printing. For projects needing stepper motor wholesale solutions, these features allow us to tailor the stepping motor 15BY25 to meet your project’s specific requirements. For more details, visit our customization page.