CHIHAI CHF-GM12-N10 Hall Encoder DC Gear Motor, 3V, 3 PPR

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

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.

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

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

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