N20 Metal Spur Gear Motor — 12mm Micro DC Gear Motor

## Product Title # N20 Metal Spur Gear Motor — 12mm Micro DC Gear Motor **Compact. Cost-Optimized. Proven in Millions.** The N20 Metal Spur Gear Motor delivers 0.8–2.0 kg·cm of torque in a 12mm package, with hardened steel spur gears and whisper-quiet operation under 50dB. The industry workhorse for smart door locks, IoT devices, and compact automation — proven in millions of units worldwide. [CTA: Request Quote →] [CTA: Request Sample →] --- ## Key Specifications | Property | Specification | |:---|:---| | **Motor Diameter** | 12mm | | **Motor Type** | Brushed DC, permanent magnet | | **Gear Type** | Spur gear, hardened steel | | **Reduction Ratios** | 30:1 / 50:1 / 100:1 / 200:1 / 500:1 / 1000:1 | | **Rated Torque** | 0.8 – 2.0 kg·cm (ratio-dependent) | | **Rated Speed** | 8 – 800 RPM (ratio-dependent) | | **Noise Level** | <50 dB (@30cm) | | **No-Load Current** | <80 mA (12V) | | **Stall Current** | <400 mA (12V) | | **Voltage Options** | 3V / 6V / 12V DC | | **Output Shaft** | 3mm diameter, customizable (D-cut, flat, keyway) | | **Mounting** | M2 screw holes, custom bracket available | | **Materials** | Steel gears, brass bearings | | **Connector** | Soldered leads (standard) / JST/Molex (custom) | | **Weight** | ~8g | | **MOQ** | 200 units (samples: 3-5 units) | | **Lead Time** | Samples: 1 week / Production: 2-4 weeks | --- ## Performance Data ### Torque & Speed by Reduction Ratio (12V DC) | Ratio | No-Load Speed | Rated Speed | Rated Torque | Stall Torque | Typical Application | |:---|:---|:---|:---|:---|:---| | 30:1 | 800 RPM | 600 RPM | 0.8 kg·cm | 3.0 kg·cm | High-speed actuation | | 50:1 | 500 RPM | 380 RPM | 1.0 kg·cm | 3.5 kg·cm | Fast lock/unlock | | 100:1 | 250 RPM | 190 RPM | 1.2 kg·cm | 4.0 kg·cm | **Smart lock standard** | | 200:1 | 125 RPM | 95 RPM | 1.5 kg·cm | 4.5 kg·cm | General purpose | | 500:1 | 50 RPM | 38 RPM | 1.8 kg·cm | 5.0 kg·cm | High torque, low speed | | 1000:1 | 25 RPM | 19 RPM | 2.0 kg·cm | 5.5 kg·cm | Maximum torque | > 📊 [Download Full Performance Curves (PDF)] --- ## Motor Options | Option | Voltage | No-Load Speed (before gearbox) | No-Load Current | Best For | |:---|:---|:---|:---|:---| | **3V DC** | 3.0V | 7,000 RPM | <60 mA | Battery-powered (single Li-ion cell) | | **6V DC** | 6.0V | 10,000 RPM | <70 mA | Battery-powered (4×AA) | | **12V DC** | 12.0V | 12,000 RPM | <80 mA | Wired / high-voltage systems | --- ## Mechanical Drawing [N20 Metal Spur Gear Motor — Dimensional Drawing with callouts] **Key Dimensions (100:1, 12V):** - Motor body: Ø12mm × 32mm (L) - Gearbox: 12mm × 20mm × 10mm - Output shaft: Ø3mm × 8mm (standard) - Total length: ~42mm - Mounting holes: M2, 8mm spacing Downloads: - 📐 [2D Drawing (PDF)] - 🧊 [3D Model (STEP/IGS)] - 📊 [Full Performance Datasheet (PDF)] --- ## Applications | Industry | Application | Why N20 Metal Spur | |:---|:---|:---| | 🔐 Smart Locks | Fingerprint locks, electronic deadbolts, hotel card locks | Compact 12mm profile, proven in millions of units, <50dB | | 🏠 Smart Home | Motorized curtains, smart valves, adjustable furniture | Low cost, reliable, easy to integrate | | 🤖 Robotics | Small robot joints, grippers, educational robots | Lightweight, good torque density | | 🚗 Automotive | HVAC flap actuators, mirror fold motors, small mechanisms | Wide temperature range, vibration resistant | | 🏭 Industrial | Small actuators, valve controls, dispensers | Durable steel gears, consistent quality | | 📷 Consumer | Camera pan/tilt, gimbals, toy mechanisms | Smooth operation, low noise | --- ## Part of These Solutions - [Smart Lock Micro Motor Solution →](smart-lock-micro-motor-solution) — Primary motor for residential smart locks - [Smart Home Automation →](smart-home-automation) — Motors for curtains, valves, furniture - [Industrial Automation Micro Drive →](industrial-automation-drive) — Small actuator and valve applications --- ## Customization Options | Option | Description | MOQ Impact | |:---|:---|:---| | **Output Shaft** | Custom diameter (2-4mm), length, flat, D-cut, keyway, pin hole | Standard on all orders | | **Voltage Winding** | Custom winding for specific voltage/current/speed requirements | 1,000 units | | **Connector** | JST, Molex, soldered leads, pogo pins, custom pinout | 1,000 units | | **Mounting Bracket** | Custom metal/plastic bracket for your housing | 2,000 units | | **Encoder** | Hall effect 7PPR/12PPR for position feedback | 500 units | | **Noise Optimization** | Precision-ground gears for <45dB applications | 2,000 units | | **Lubrication** | Low-temperature grease for outdoor/cold climate | 1,000 units | | **Branding** | Custom label, Yukun or neutral | 5,000 units | --- ## Quality & Testing - ✅ Every motor 100% load-tested before shipment - ✅ Performance parameters recorded per batch - ✅ Material traceability (full batch records) - ✅ RoHS & REACH compliant - ✅ ISO 9001:2015 certified factory - ✅ IATF 16949 options available for automotive programs - ✅ Salt spray testing: 48-96h (ISO 9227) - ✅ Temperature validation: -20°C to +80°C --- ## Pricing & Lead Time | Quantity | Unit Price (FOB Shenzhen) | Lead Time | |:---|:---|:---| | Sample (3-5 units) | $5.60/unit | 1 week | | Trial (100-500 units) | $3.50/unit | 2-3 weeks | | Batch (1K-5K units) | **$2.80/unit** | 3-4 weeks | | Volume (10K+ units) | Contact us for volume pricing | 4-6 weeks | > 💡 Prices are FOB Shenzhen. Volume discounts available. Sample fee credited against first production order. --- ## Frequently Asked Questions **Q: What's the difference between N20 metal spur and N20 plastic spur?** A: Metal spur gears offer higher torque capacity (0.8-2.0 vs 0.3-1.0 kg·cm), longer life, and better temperature resistance. Plastic spur is lighter and quieter but for lower-load applications. **Q: Can I get the motor in 3V for a single-cell Li-ion battery?** A: Yes. 3V winding is available. The no-load speed is ~7,000 RPM before gear reduction. Specify your battery voltage when requesting a sample. **Q: What's the lifespan of this motor?** A: Typical service life is 50,000–100,000 cycles under rated load, depending on duty cycle and operating conditions. For applications requiring 200K+ cycles, we recommend the N20 Planetary variant. **Q: Can you provide a matched pair (left-hand/right-hand rotation)?** A: Yes. Simply reverse the polarity — the motor runs in either direction. For simultaneous dual-motor applications, we can provide matched-speed pairs. **Q: What's the difference vs. the N20 Planetary?** A: Spur gear = simpler, more cost-effective, higher backlash. Planetary = precision, lower backlash, higher torque density, higher cost. Choose spur for cost-sensitive high-volume applications; choose planetary for precision applications. **Q: Do you support drop-shipping to our contract manufacturer?** A: Yes. We ship globally to your designated assembly location. Standard export packaging with moisture protection. --- [CTA Button: Request Quote for N20 Metal Spur →] [CTA Button: Request Evaluation Sample →] --- > **Yukun** — Your Global Micro Motor Sourcing & Solutions Platform > 📧 [email] | 📱 [WhatsApp] | 🏭 Shenzhen, China > *15+ Years Micro Motor Manufacturing | ISO 9001 | 1-Week Samples | FOB from $2.80*