CHIHAI CHF-GM12-N10 Hall Encoder DC Gear Motor, 3V, 3 PPR
CHIHAI CHF-GM12-N10 Hall Encoder DC Gear Motor, 3V, 3 PPR
CHIHAI MOTOR
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Overview
The CHIHAI MOTOR CHF-GM 12-N 10-ABHL DC gear motor combines a miniature brushed motor, metal reduction gears and a 3PPR magnetic Hall encoder for compact feedback-equipped mechanisms. Select a package and reduction ratio; all selectable configurations use the 3 V 27-type motor winding.
Features
- Compact metal gear train and copper-wire armature winding.
- 3 mm D shaft with 10 mm projection reference.
- AB quadrature feedback for direction and rotation sensing.
- Matching six-pin cable and optional encoder cover or mounting bracket.
Specifications
| Brand / model | CHIHAI MOTOR / CHF-GM 12-N 10-ABHL; 3 V 27-type winding |
| Product | Miniature brushed DC gear motor with metal reduction gears and AB incremental magnetic Hall encoder |
| Selectable dimensions | Package and reduction ratio; 3 V winding is fixed in these 36retailSKUs |
| Motor performance condition | DC 3.0 V, 27-type input motor, 22000 rpm input reference; power reference 0.42 W |
| Currents at 3 V | No-load≤180 mA; rated≤0.45 A; stall≤0.85 A |
| Output shaft | 3 mm D shaft, diameter+0/-0.03 mm; 10.0±0.3 mm projection; 2.5+0/-0.1 mm across-flat reference; 4 mm support feature |
| Mechanical references | Gearbox front 10×12 mm, maxwidth 12.5 mm; 9 mm mounting spacing; 2×M 1.6 holes; 10.1 mm feature; 0.7 mm shoulder |
| Motor/body drawing | 17.0 mm REF motor section; 26.2 mm MAX body reference; rear 12 mm envelope, 9.5 mm magnet reference and 2 mm rear feature |
| Hall encoder | AB quadrature square-wave signals; 3PPR at motor shaft; 6magnetic poles/3pole pairs |
| Hall supply | 3.3 V DC or 5.0 V DC; separate from motor supply |
| Response / signal conditioning | 100kHz reference; onboard pull-up/signal-shaping resistors for compatible MCU inputs |
| Connector / harness | ZH 1.5-6PIN, matching lead included; drawing 100±5 mm harness reference |
| Magnet | D 9.5×d 1.0×h 2 mm drawing reference; planar magnetization, 3pole pairs |
| Motor mass | Approximately 10.5 g net reference; accessories and packaging additional |
3 V Speed, Torque and Output-Pulse Reference
No-load speed and rated speed are different operating points. Rated torque is shown in gf.cm; stall torque is shown in kgf.cm. The 27-type and 22000 rpm labels identify the input-motor reference, not a 27 V supply or gearbox output speed.
| Nominal ratio : 1 | No-load rpm | Rated rpm | Rated torque gf.cm | Stall torque kgf.cm | Hall output pulse reference |
|---|---|---|---|---|---|
| 10 | 2000 | 1000 | 30 | ≥0.08 | 29.04 |
| 20 | 1000 | 500 | 70 | ≥0.16 | 58.07 |
| 30 | 660 | 330 | 100 | ≥0.24 | 88.41 |
| 50 | 400 | 200 | 180 | ≥0.4 | 153.30 |
| 100 | 200 | 100 | 350 | ≥0.8 | 297.90 |
| 150 | 130 | 65 | 500 | ≥1.2 | 452.87 |
| 210 | 95 | 47 | 700 | ≥1.7 | 629.27 |
| 298 | 67 | 32 | 1000 | ≥2.2 | 893.70 |
| 380 | 52 | 26 | 1300 | ≥3.0 | 1137.47 |
The Hall output reference equals 3base pulses per motor revolution multiplied by the actual gearbox reduction. Fractional pulse references reflect the underlying gear ratio; they are not the nominal selector ratio. Counting all A/B edges changes the count convention and does not change the 3PPR base specification. Avoid stall and overload; stall figures do not establish continuous torque.
Six-Wire Connection
| Pin | Wire | Signal | Function |
|---|---|---|---|
| 1 | Red | M 1 / M+ | Motor supply positive |
| 2 | Black | GND | Hall supply ground |
| 3 | Yellow | C 1 / A | Encoder phaseA output |
| 4 | White | C 2 / B | Encoder phaseB output |
| 5 | Blue | VCC | Hall supply 3.3 V or 5.0 V |
| 6 | Green | M 2 / M- | Motor supply negative |
Keep the motor supply separate from the Hall logic supply. Use 3 V for the selected motor and a suitable 3.3 V or 5.0 V supply for the encoder; do not connect motor supply voltage to signal outputs. Verify the marked pin orientation and common signal ground before connection. Red/green are the motor terminals; black is Hall ground. Reverse motor polarity after stopping to reverse direction; the A/B sequence indicates rotation direction. A compatible motor driver and feedback processor are separate.
Mechanical Fit and Accessories
Check the full mechanical drawing and shaft clearance before mounting. The optional white bracket reference has a 10 mm opening, 14.5 mm upper width, 11.3 mm side reference, 12 mm lower width, 25 mm overall mounting width and approximately 18.5 mm mounting spacing. The bracket reference is labeled N 20-family; confirm the actual fit and screw engagement with the selected N 10 assembly. Keep screws clear of internal gears and motor parts.
The optional cover protects the rear encoder area from casual contact and dust. It does not establish a certified IP rating or make the motor waterproof. Package photos show the cover and bracket separately to identify contents; only one motor is supplied.
Applications
Compact robotic mechanisms, small vehicle-mounted mounts, smart-home mechanisms, miniature positioning systems and other small drives where the 3 V winding, speed, torque, shaft and feedback interface fit the application. A complete robot, vehicle, wireless charging mount or positioning controller is not included.
What's Included
| Selected package | Contents |
|---|---|
| Motor Only | One selected-ratio motor with Hall encoder and six-wire lead. |
| Motor + Encoder Cover | One selected motor/lead and one protective encoder cover. |
| Motor + Mounting Bracket | One selected motor/lead and one mounting bracket with pictured mounting hardware. |
| Motor + Cover + Bracket | One selected motor/lead, one cover and one mounting bracket with pictured hardware. |
Motor-only does not include the optional cover or bracket. A power supply, motor driver, MCU, feedback reader and complete mechanism are not included.
FAQ
Does 3PPR mean the cable has three wires?
No. It is the base encoder pulse count per motor revolution. The supplied connection uses six pins/wires.
Can I power the encoder from the motor 3 V connection?
The Hall supply reference is 3.3 V or 5.0 V and uses its own VCC/GND pins. Match the selected logic supply and wiring.
Is the option speed a loaded speed?
The no-load and rated-speed values are listed separately. Select by rated speed and torque for the intended load.
Does every package include the bracket and cover?
No. They are included only when named in the selected package.
Visual Details
