Small Stepper Motor
Rotor made of sintered neodymium magnet – delivers 20% higher holding torque than ferrite designs
Step angles of 7.5°, 15° or 18° – ideal for applications where fine micro‑stepping is not required
Ultra‑low power consumption – works directly from 5 V, 12 V, or 24 V battery packs
Slim profile down to 8 mm thick – fits into medical cassettes and HVAC flaps
Simple two‑phase bipolar or unipolar drive – reduces driver IC cost
Quiet operation at rated speed – no irritating high‑frequency noise
Kechen Motor – Small Stepper Motor Manufacturer in China
PM series small stepper motors deliver reliable, discrete rotational steps using a high-density magnetized rotor and precision-toothed stator, serving as a cost-effective alternative to complex hybrid motors where ultra-fine micro-stepping isn’t required. Engineered for steady holding torque across high-cycle operations, the stator utilizes low-loss silicon steel laminations paired with high-grade sintered NdFeB magnets, all housed in corrosion-resistant 6063 aluminum alloy with a stainless steel output shaft. While standard units feature IP40 protection (with IP54 available for light moisture exposure), the housing design can be upgraded to an optional IP65 rating for harsh environments requiring full dust resistance and water jet protection. Designed for straightforward indoor installation on equipment panels or metal brackets, all models meet Insulation Class B (130°C) standards and strictly comply with CE, RoHS, and REACH certifications.
Top Features of Kechen Motor Permanent Magnet Stepper Motor You Should Know
Equipped with high-grade sintered NdFeB magnet rotors, these PM stepper motors deliver reliable holding torque and stable detent torque even when unpowered. Stator windings are impregnated with Class B insulation varnish to prevent electrical shorts and resist internal moisture accumulation. Flexible engineering choices include custom coil resistance tailored to driver voltages, double shaft extensions, alternative cable exit angles, and integrated gearboxes. Built in compliance with IEC 60335-1 safety standards for household appliances, the design passes 500 VAC hipot insulation testing for one second. The open-frame construction supports passive air cooling, while fully enclosed setups can be specified with thermally conductive potting. Terminal connections can also be configured with pre-stripped leads or JST-compatible connectors.
| Parameter | Kechen Motor PM Series Range (Example) |
|---|---|
| Motor Frame Size (Square / Round) | 8mm, 10mm, 15mm, 20mm, 25mm, 35mm, 42mm (body length varies by stack) |
| Step Angle | 7.5°, 15° or 18° (full step, non‑microstep drive) |
| Rated Voltage | 5 V, 12 V, 24 V (custom 3 V – 24 V available) |
| Phase Resistance (per winding) | 5 Ω – 200 Ω (depending on voltage and torque requirement) |
| Holding Torque (rated current) | 20 – 250 mN·m (approx. 0.2 – 2.5 kgf·cm) |
| Detent Torque (power off) | 5 – 40 mN·m (varies by magnet strength) |
| Insulation Class | Class B (130°C) standard, Class F optional |
| Protection Grade (IP) | IP40 standard, IP54 available with sealing |
| Lead Wires / Connector | 4 or 6 wires, pre‑stripped or JST‑compatible connector |
| Optional Customizations | Double shaft, axial/radial cable exit, integrated gearbox, shaft machining, custom winding resistance |
Kechen Small Stepper Motor Products
Kechen Small Stepper Motor 3D Design
Enhancing Safety and Aesthetics: Applications of Kechen Small Stepper Motor
Automotive HVAC systems – PM steppers drive air‑mix and mode doors quietly, with fail‑safe detent torque preventing unintended flap movement. Security cameras – pan‑and‑tilt mechanisms benefit from the motor’s low‑power idle state, extending battery life for outdoor PTZ units. Home appliances – microwave oven turntables, coffee machine grinders, and air fryer stirrers use the 7.5° step angle for reliable rotation without feedback sensors. Office automation – document scanners, label printers, and ATM note feeders rely on the simple bipolar drive and long lifespan. Medical devices – disposable insulin pumps, syringe drivers, and dental X‑ray positioners choose our PM series for its small footprint and predictable step accuracy. Additional fields include smart locks, toy animatronics, agricultural seed meters, and HVAC damper actuators.
Quick Installation Note
Connect the two phase wires to driver terminals A / A̅ and B / B̅ (or A / common / B for unipolar). No encoder alignment or step‑angle calibration is required – the motor indexes to the nearest full step when powered on.
Need a non‑standard voltage below 5 V or a custom lead length longer than 300 mm? Contact our engineering team – low MOQ available for prototypes.
