Full-Series BYJ Stepper Motor: From 15mm Micro-Drives to 300mN.m Industrial Power
Maintex is a source manufacturer providing highly consistent motion control across the entire BYJ spectrum. Leveraging 30 automated lines, we offer a specialized range: from ultra-compact 15BYJ/20BYJ stepper motor series for space-restricted medical and lab instruments, to the industry-standard 24BYJ/28BYJ (35dB) for silent HVAC and security PTZ, and the heavy-duty 35BYJ412 (300mN.m) for industrial valves. By matching gears—from Silencer POM to Sintered Metal—with Class B/E insulation, we ensure zero-burnout reliability under mechanical blockage. Our 80M+ annual capacity guarantees 100% specification compliance for every batch, regardless of size or torque.
Source Manufacturer of BYJ Stepper Motors
We offer full-spectrum BYJ geared stepper motor customization from ∅15mm to ∅35mm, with torque ranging from 1.2mN.m to 300mN.m (3060gf.cm)
Heavy-Duty Actuator Motors optimized for industrial valve actuators and automatic damper control.
- Torque:120mN.m – 300mN.m (1300gf.cm – 3060gf.cm)
- Gear Ratio: 1:42.5, 1:85.2
- Gear Train： Full Sintered Metal Gears
- Insulation Class： Class B / Class E
Low-Noise Precision Drives for AC swing louvers, IP camera PTZ, and smart home air vents.
- Noise Level:<40dB (10cm distance)
- Step Angle:625°/64, 11.25°/32
- Gear Ratio:1:16, 1:32, 1:64
- Gear Train: POM / Metal & POM Hybrid
Micro Reduction Stepper Drives are engineered for medical lab automation and precision reagent dispensing.
- Diameter:φ15mm, φ20mm
- Torque Range:cm – 60mN.m
- Step Angle:18°/Ratio (Customizable)
- Gear Train:POM / Metal & POM Hybrid
Scalable manufacturing with 100% EOL testing. We guarantee perfect specification consistency from prototype to volume supply.
- Shaft:D-cut, Cross-hole, Length customization
- Cable:Custom lead wires & original connectors
- Lubrication:High/Low-temp specialized grease
Why You Need BYJ Stepper Motors
MAINTEX BYJ geared stepper motor series combines permanent magnet stepping with versatile reduction gearboxes. We offer flexible torque outputs from 12gf.cm to 300mN.m with a minimum noise level of 35dB. Available in all-metal, POM, or hybrid gear configurations, these motors provide optimized solutions for medical, security, and industrial automation.
Validated durability supporting 10,000+ hours of continuous operation.
Optimized gear meshing ensures quiet operation, with noise as low as 35dB (measured at 10cm).
Automated winding process maintains resistance tolerance within ±10% for stable batch performance.
Options include Sintered Metal for strength, POM for silence, or Hybrid for balanced performance.
Withstands wide temperature ranges from -20°C to +60°C
Class E insulation with a dielectric strength of 600V AC/1mA/1s ensures safe electrical operation.
Reinforced architecture withstands mechanical stalls without gear teeth breakage or stripping.
Ultra-compact φ15mm to φ35mm diameters fit into precision devices.
High-Strength Anti-Stall Gearbox ( Hybrid Material)
Field conditions like valve calcification or jammed louvers are unpredictable. MAINTEX BYJ stepper motors feature a hybrid gear design: high-speed stages use virgin POM (Plastic Steel) for noise reduction, while the final output stage is reinforced with sintered metal gears. This configuration allows the gearbox to sustain 3x the peak stall torque of standard all-plastic versions. The reinforced architecture prevents gear stripping and structural deformation during mechanical stalls, ensuring the system returns to normal operation once the blockage is removed.
35dB Minimum Noise: Engineered for Sensitive Environments
For indoor appliances and security surveillance, acoustic impact is a key metric. By optimizing gear tooth profiles and using POM or hybrid metallurgic materials, MAINTEX PM BYJ stepper motors maintain a noise baseline as low as 35dB. This acoustic control, paired with 5.625° or 11.25° step angles, provides smooth rotation with minimal vibration. without compromising torque density, it ensures image stability and fluid motion control for high-definition PTZ cameras and smart home devices.
Resource
Explore our full range of geared stepper motors by downloading the complete catalog here.
Download datasheets for representative BYJ stepper models. For full specifications or custom technical drawings of other products, please contact our engineers.
Why Choose Maintex for Your BYJ Stepper Motor?
As a leading BYJ stepper motor Manufacturer in China, we operate a 45,000 m² facility, producing 600k units daily and 80 million yearly. We are a trusted supplier of PM stepper motors for Fortune 500 partners. With 80 QA specialists, we ensure every geared stepper motor is durable and consistent. Our massive capacity perfectly supports global OEM/ODM requirements for precision BYJ geared stepper motor solutions.
BYJ Stepper Motor Application Solutions
Standard motors often fail in high-humidity settings like AC units or smart toilets due to internal oxidation. MAINTEX BYJ motors utilize sealed housings and Class E moisture-resistant insulation. With vacuum-impregnated windings and anti-corrosion rotor treatments, our motors maintain dielectric strength and prevent internal rust even in 95% non-condensing humidity.
Custom-engineered for CCTV pan-tilt-zoom (PTZ) units, maintaining precise positional accuracy for outdoor surveillance domes and IP cameras. With a minimum mechanical backlash, these geared stepper motors eliminate image blurring during high-magnification optical zooming. Optimized gear tooth profiles allow for ultra-low speed tracking (down to 0.1°/s) without vibration, maintaining image stability on 4K/8K sensors. Utilizing virgin POM (Plastic Steel) or sintered metal stages, the drive train withstands continuous 360° auto-patrol and rapid start-stop cycles without torque degradation or gear wear.
Standard PM motors often compromise lab automation due to thermal instability and lubricant outgassing. MAINTEX 35BYJ stepper motor series addresses these pain points with low-outgassing synthetic grease and Class B insulation (rated for 130°C).
Delivering a high pull-in torque of ≥ 300mN · m and maintaining a stable temperature rise of ≤60K, our motors ensure zero reagent contamination and consistent accuracy. The 1/42.5 reduction ratio provides the precise incremental motion required for sensitive autosamplers and fluidic valves.
More About Our Factory
- Data Sheet
- Custom Engineering & Support
| Type | BYJ stepper motor Seriers |
| Rate Voltage | 5-24V |
| Rated Frequency | 100-400Hz |
| Step Angle | 3.75°,5.625°,7.5°,11.25° |
| Exciting Method | 1-2,2-2 |
| Resistance | 10-400Ω |
| Reduction Ratio | 1/32,1/36,1/42.5,1/64,1/85,1/100 |
| Rated Torque (min) | 35-300mN.m(High-static holding torque for vertical loads) |
| Dimensions
| φ15mm,φ24mm,φ28mm,φ35mm |
| Exciting mode | Unipolar / Bipolar |
| Typical Applications | Air conditioner horizontal/vertical swing blades, outdoor surveillance domes, smart IP camera rotation， Smart Toilet Seat， Central air conditioning duct，Mini-PTZ cameras |
- Full-Spectrum Component Customization
We provide extensive tailoring for PM stepper motors to match your exact mechanical interface. This includes precision adjustments to frame dimensions, shaft diameters (D-cut, cross-hole, or threaded), and mounting hole patterns—ensuring a drop-in replacement or seamless new integration.
- Specialized Gear Ratios & Electrical Tuning
Beyond standard models, we customize gearbox ratios for optimized torque output and step angle accuracy. Our engineers also adjust specific electrical parameters, such as resistance and inductance, to align with your driver’s voltage and current constraints.
- Lead Wire & Connection Configurations
Tailored lead wire configurations to suit your internal routing and environmental needs. We customize wire length, insulation materials, and connector types, providing plug-and-play solutions that reduce your assembly time and prevent wiring errors.
Testimonial
“As an OEM partner, we required a specific 1/42.5 reduction ratio and a custom wire harness. Their 70-person R&D team delivered accurate 3D drawings within 72 hours, allowing us to move from prototype to mass production ahead of schedule. The ≥300mN.m torque handles our valve switching perfectly.”
James O'ConnorChief Product Officer, Precision Automatics (USA)“We use 24BYJ/28BYJ motors for smart AC louvers. The moisture-resistant design (tested at 95% RH) is a game-changer for high-humidity environments. The 10,000-hour service life ensures we don’t face the common gear stripping issues seen with standard plastic gearboxes.”
Satoshi TanakaQuality Assurance Lead, Daikin Industries (Japan)“For our lab autosamplers, thermal control is non-negotiable to protect reagent integrity. MAINTEX provided a Class B insulated solution that maintains a stable temperature rise (≤60K) even under high-duty cycles. The low-outgassing grease prevents any contamination of our sensitive optical sensors.”
Dr. Aris VarmaR&D Director, HealthTech Diagnostics (India)
A standard PM motor provides high-speed, low-torque rotation. By adding a reduction gearbox, a PM gear motor (like the 24BYJ48 or 35BYJ412) increases torque and precision while lowering speed. This allows for the precise incremental motion required in delicate applications such as valve control and medical analyzers.
Yes, our motors feature moisture-resistant designs. Tested at 90%~95% relative humidity for 48 hours, these motors prevent internal oxidation and maintain dielectric strength. This makes them ideal for smart toilets and outdoor surveillance equipment where moisture is a constant factor.
The 1/42.5 reduction ratio boosts output torque to ≥300mN.m while refining the step angle to 3.75°. This mechanical advantage ensures stable movement under resistance and provides the high holding torque necessary to maintain position in HVAC dampers or PTZ cameras.
Gear stripping occurs due to excessive stall torque or material fatigue. We utilize high-tenacity POM or hybrid gears that withstand frequent start-stop cycles. Our 30-cycle durability testing ensures the gearbox handles resistance without jamming or structural wear.
All MAINTEX motors are manufactured to meet RoHS standards, ensuring they are free from hazardous substances. Combined with rigorous dielectric strength testing (600VAC/1s), these motors are safe for export to regulated markets like the USA and Europe.
We utilize fully automated winding and performance testing stations. Each motor is laser-etched with a Batch Code for full traceability. Our ISO-certified process ensures that the 1st motor and the 100,000th motor share identical torque curves and noise profiles.
While the 24BYJ48 focuses on space-saving for AC swing louvers, the 35BYJ412 is a heavy-duty geared stepper providing ≥300mN.m torque for industrial valves and medical pumps. Choose 35BYJ412 when your system requires high static holding torque to maintain position without power.
We utilize Class B (130°C) and Class E insulation systems. Our motors are tested to maintain a stable temperature rise (≤60K), ensuring the internal windings and permanent magnets do not degrade even during high-duty cycles or accidental mechanical blockage.
Choose Sintered Metal for high-torque applications (>150mN.m) like industrial valves to prevent gear teeth shearing. Opt for POM (Plastic Steel) for noise-sensitive environments (35dB) like indoor IP cameras or smart home devices.
