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3865-520 DC Gear Motor with AB Phase Encoder
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$33.75 USD
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DC 6V/12V Encoder Gear Motor 1:29 Reduction Ratio, 6mm D-Shaft, 3.3V/5V Signal, for Arduino & STM32 Projects
Product Description
Power your precision projects with the Chihai CHF-GM3865-520 DC Gear Motor with Encoder. Designed for speed and position control, this 6V/12V gear motor features an AB-phase encoder (Hall or high-precision optical) for accurate feedback, making it ideal for smart cars, BBQ rotisseries, facial mask machines, and small automation builds.
With a compact 38mm gearbox and multiple reduction ratios (1:29, 1:42, 1:67, 1:125, 1:225, 1:450), you can fine-tune speed and torque to match your needs. Choose from standalone motor, motor with mounting bracket, or a complete 65mm tire kit for plug-and-play integration. The 6mm D-shaped shaft (23.5mm length) ensures easy mounting, and the XH2.54 connector simplifies wiring.
Key Features & Benefits
✅ Dual Encoder Options: Choose Hall encoder (11PPR, stable) or high-precision optical encoder (448PPR, 40x more accurate) for precise speed/position feedback.
✅ Wide Voltage & Performance: Works with DC 6V or 12V, with rated torque up to 20 kg·cm (1:450 ratio) and max power up to 5.5W.
✅ Flexible Configurations: Select reduction ratios, mounting brackets, or tire kits to fit your project requirements.
✅ Easy Integration: XH2.54 terminal connector, encoder signals compatible with 3.3V/5V microcontrollers (Arduino, STM32, 51).
✅ Compact & Lightweight: Only 170g, with a 6mm D-shaped shaft for secure wheel/gear mounting.
Full Specifications
| Parameter | Details |
|---|---|
| Brand | Chihai Motor |
| Model | CHF-GM3865-520 |
| Type | Permanent Magnet DC Gear Motor with Encoder |
| Operating Voltage | DC 6V / DC 12V |
| Reduction Ratios | 1:29, 1:42, 1:67, 1:125, 1:225, 1:450 |
| Rated Speed (12V, 1:29) | 265±10% RPM |
| Rated Torque (12V, 1:29) | 1.2 kgf·cm |
| Stall Torque (12V, 1:29) | ≥5.5 kgf·cm |
| Encoder Type | Hall Encoder (11PPR) / High-Precision Optical Encoder (448PPR) |
| Encoder Power | 3.3V / 5V |
| Shaft Specs | 6mm D-shaped shaft, 23.5mm total length (12mm D-section) |
| Weight | ~170g |
| Connector | XH2.54 Terminal |
| Included Options | Motor Only, Motor + Bracket, Motor + 65mm Tire Kit |
| Applications | Smart Cars, BBQ Rotisseries, Facial Mask Machines, Robotics |
Encoder Comparison
| Feature | Optical Encoder | Hall Encoder |
|---|---|---|
| Resolution | 448PPR (40x higher precision) | 11PPR |
| Technology | Photoelectric Induction | Magnetic Induction |
| Power Range | 3.3V-5V | 5V |
| Performance | Excellent at low speeds | High stability, sufficient for general use |
| Compatibility | Works with STM32/Arduino (hardware encoder interface) | Works with almost all microcontrollers |
Care Instructions
Care Instructions

