N20 Planetary Gear Motor — 12mm Precision Micro Drive

# N20 Planetary Gear Motor — 12mm Precision Micro Drive **Precision. Smooth. Compact.** — 12mm planetary gear motor with <1° backlash, delivering 1.0–3.0 kg·cm of torque in a compact, precision package. ## Key Specifications | Property | Specification | |:---|:---| | Motor Diameter | 12mm | | Gear Type | Planetary, hardened steel | | Backlash | <1° (standard) / <0.5° (precision) | | Reduction Ratios | 4:1 / 16:1 / 64:1 / 256:1 | | Rated Torque | 1.0 – 3.0 kg·cm | | Noise Level | <50 dB (@30cm) | | Motor Options | Brushed DC 12V / Brushless DC 24V / Stepper 1.8° | | Encoder | Optional magnetic, 128/256/512 CPR | | MOQ | 200 units (samples: 3-5) | ## Performance by Reduction Ratio (12V DC) | Ratio | Rated Speed | Rated Torque | Typical Application | |:---|:---|:---|:---| | 4:1 | 2,000 RPM | 1.0 kg·cm | High-speed precision | | 16:1 | 500 RPM | 1.5 kg·cm | General precision actuation | | 64:1 | 125 RPM | 2.0 kg·cm | Smart lock premium | | 256:1 | 31 RPM | 3.0 kg·cm | Maximum torque precision | ## Why Planetary over Spur? | | Spur Gear | Planetary | |:---|:---|:---| | Backlash | Medium-High | **<1° (Low)** | | Torque Density | Good | **Excellent** | | Efficiency | 75-85% | **80-90%** | | Noise | <50dB | <50dB | | Cost | $$ | $$$ | | Best For | Cost-sensitive | **Precision applications** | ## Pricing (FOB Shenzhen) | Quantity | Unit Price | Lead Time | |:---|:---|:---| | Sample (3-5) | $7.60/unit | 1 week | | Trial (100-500) | $5.00/unit | 2-3 weeks | | Batch (1K-5K) | **$3.80/unit** | 3-4 weeks | | Volume (10K+) | Contact us | 4-6 weeks | [Request Quote →](/contact) [Request Sample →](/contact)