Micro Stepper Motor 8mm 10mm 15mm Small Stepping Motor- Suzhou Retek Electric Technology Co., Ltd.

Micro Stepper Motors: Actuation in Confined Spaces

Micro Stepper Motors (diameters 8mm to 15mm) are miniature permanent magnet (PM) stepper motors designed for precision positioning in extremely space-constrained environments.

These motors feature high pole counts for their size and provide discrete, accurate angular movement suitable for delicate mechanisms. Due to their small size, they generally have low holding torque and low inertia, making them highly responsive. They are the ideal choice for driving gears, lead screws, or pinions in micro-actuation systems found in consumer electronics, medical diagnostics, and small format printers. They are typically driven by unipolar or bipolar low-voltage (3V to 5V) pulses.

Introduction

Detailed Parameters and Performance Data

RETEK: Miniaturized Positioning Solutions

Suzhou Retek Electric Technology Co., Ltd. specializes in the high-volume manufacturing of micro stepper motors with tight dimensional tolerances. We ensure the stability of the small magnet and rotor assembly, which is crucial for achieving repeatable micro-stepping in miniature systems. This series offers simple, cost-effective digital positioning control where brushed motors or miniature servos are too large or too complex to integrate.

Applications

Advanced Technology Highlights

Miniature and Highly Integrated Applications for Micro Steppers

Camera Autofocus and Zoom: Motors for precise adjustment of optical lenses in smartphones, security cameras, and SLR lenses. Challenge: Small size, high precision, and low noise.
Medical Micro-Pumps and Fluidics: Drives for miniature peristaltic pumps, micro-valves, and automated fluid dispensing.
Automotive Gauge Clusters: Actuators for pointer needles in instrument panels.
Credit Card/Bill Readers: Motors for precisely feeding or scanning paper currency and cards.

Technical Specifications

Industrial & Commercial Usage

Technical Parameters (Micro Stepper Motors)

Parameter	Range / Typical Value	Unit
Diameter	8 to 15	mm
Step Angle Options	7.5, 15, or 18	Degrees
Holding Torque	$ < 50$	g ⋅ cm
Input Voltage	3 to 5	VDC
Drive Type	Permanent Magnet (PM)	Design

Additional Information

Supplementary Details & Notes

Integrated Production and Customization Workflow

Production involves high-speed automated coil winding and precise terminal welding. The motor's phase resistance and step torque are tested via automated optical inspection systems.

Custom Pinion Integration: Factory mounting of specific-module pinions (e.g., 0.5M or 0.3M) directly onto the shaft for immediate gearbox integration.
Integrated Gearbox: Providing the motor and a miniature multi-stage spur gear reduction unit as a fully assembled, lubricated module.
Connector Harness: Providing ultra-fine wire cable harness with miniature connectors (e.g., JST SH/GH) to client-specified length.
Vibration Dampening: Custom mounting interfaces or pads designed to absorb the motor's vibration for noise-sensitive products.

Service & Support

Technical Advantages and Core Design Features

Extremely Compact Size: Enables precise motion control within the smallest electronic and mechanical assemblies.
Direct Digital Control: Provides precise angular control directly from digital signals (pulses), simplifying the control interface compared to analog DC motors.
Excellent Positional Repeatability: Despite their small size, they offer highly repeatable angular positioning, critical for optical systems.
Low Power Consumption: Operates at low voltage and current, ideal for battery-powered or low-power embedded systems.
Low Cost in High Volume: Simple construction and high-volume PM stepper manufacturing lead to a highly competitive unit cost.

Frequently Asked Questions

Common Inquiries Regarding Micro Stepper Motors

Q: What is the difference between a PM stepper and a Hybrid Stepper?
A: PM steppers (used here) have lower resolution, rely solely on permanent magnets, and are cost-effective. Hybrid steppers (NEMA 17/23/34) use both permanent magnets and a toothed iron rotor (hybrid) for higher torque and much higher resolution (e.g., 1.8∘ vs. 7.5∘).

Q: Can I micro-step these miniature PM steppers?
A: Yes, but the torque accuracy between micro-steps is much lower than in hybrid steppers due to the simpler magnetic design. Micro-stepping is primarily used here for smoothing motion rather than significantly increasing accuracy.

Q: How are these motors typically connected to the load?
A: Often, a pinion gear is pressed directly onto the motor shaft, driving a final gear train or a miniature lead screw for linear motion conversion. Custom shafts or built-in reduction gearboxes are common.

Resources

Advanced Material Selection Guide

Magnet: Small, high-coercivity permanent magnet (typically plastic or rubber bonded ferrite, or sometimes NdFeB) to maximize field strength in a tiny volume.

Housing: Stamped or drawn metal housing for magnetic shielding and minimal weight.

Gearbox: Often sold with an integrated miniature spur or planetary gearbox (all plastic or combination of plastic/metal) to multiply the low holding torque to a usable level.

About Suzhou Retek Electric Technology Co., Ltd.

Unlike other motor suppliers, Retek engineering system prevents the selling of our motors and components by catalogue as every model is customized for our customers. The customers are assured that every component they receive from Retek is designed with their exact specifications in mind. Our total solutions are a combination of our innovation and a close working partnership with our customers and suppliers.

As China Micro Stepper Motor 8mm 10mm 15mm Small Stepping Motor Manufacturers and Wholesale Micro Stepper Motor 8mm 10mm 15mm Small Stepping Motor OEM/ODM Suppliers, Retek business consists of three platforms: Motors, Die-Casting and CNC manufacturing and wire harness. Retek products are widely supplied for residential fans, vents, boats, airplanes, medical facilities, laboratory facilities, trucks and other automotive machines.

Welcome to send us an RFQ, it is believed you will get the best cost-effective products and services here!

Customized Solutions

Quality Assurance

Global Export

Suzhou Retek Electric Technology Co., Ltd.

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