
POLOLU-2291 · Pololu

Clearance: This is being replaced by a functionally identical version that has a removable protective end cap over the encoder. This gearmotor consists of a low-power, 6 V brushed DC motor combined with a 498.87:1 metal spur gearbox, and it has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 23,945.84 counts per revolution of the gearbox’s output shaft. The gearmotor is cylindrical, with a diameter just under 25 mm, and the D-shaped output shaft is 4 mm in diameter and extends 12.5 mm from the face plate of the gearbox. Key specifications: voltage no-load… (Pololu item #2291)
| Part number | POLOLU-2291 |
|---|---|
| Manufacturer | Pololu |
| Category | Motors & Actuators › DC & Gear Motors |
| Pins | 6 |
| Voltage (max) | 6 V |
499:1 Metal Gearmotor 25Dx70L mm LP 6V with 48 CPR Encoder (No End Cap) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | M1 | passive | Motor power (red), one motor terminal |
| 2 | M2 | passive | Motor power (black), the other motor terminal |
| 3 | GND | ground | Encoder GND (green) |
| 4 | VCC | power | Encoder Vcc (blue) |
| 5 | A | output | Encoder A output (yellow) |
| 6 | B | output | Encoder B output (white) |
Schematic symbol and footprint
Schematic symbol
Footprint: 1x6 pin header, 2.54 mm (Pololu 25D/37D encoder cable) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Related parts

10:1 Micro Metal Gearmotor HP 6VPOLOLU-999

10:1 Micro Metal Gearmotor HP 6V with 12 CPR Encoder, Back ConnectorPOLOLU-5154

10:1 Micro Metal Gearmotor HP 6V with 12 CPR Encoder, Side ConnectorPOLOLU-5155

10:1 Micro Metal Gearmotor LP 6VPOLOLU-1099

10:1 Micro Metal Gearmotor LP 6V with 12 CPR Encoder, Back ConnectorPOLOLU-5102

10:1 Micro Metal Gearmotor LP 6V with 12 CPR Encoder, Side ConnectorPOLOLU-5103

10:1 Micro Metal Gearmotor MP 6VPOLOLU-2363

10:1 Micro Metal Gearmotor MP 6V with 12 CPR Encoder, Back ConnectorPOLOLU-5128