12V 251RPM 18Kg*cm DC Gear Motor with Encoder

This DFRobot gear motor (type GB37Y3530-12V-251R) combines a 12 V DC motor with a 43.8:1 metal gearbox and a Hall encoder with two outputs (quadrature). The encoder delivers 16 counts per revolution of the motor shaft, which gives 700 counts per revolution of the output shaft. This allows speed, direction and distance to be measured, for example to control a driving robot.

Recommended alternative with 83 RPM and 45 kg·cm: 12V 83RPM 45Kg*cm Gear Motor with Encoder

Important: Screw the mounting screws no more than 3 mm deep into the threaded holes, longer screws can damage the gearbox.

Recommended Accessories:

Features:

43.8:1 metal gearbox, 6 mm D-shaped output shaft, 15.5 mm long
Hall encoder with two outputs A and B, 5 V supply
Six M3 threaded holes on the face plate, arranged as a regular hexagon with 15.5 mm between neighbouring holes
Designed for 12 V, starts from 1 V
The stall current is 7 A, the motor driver must be rated for it
Can be used without the encoder as an ordinary gear motor

Application Examples:

Drive for mobile robots with speed control
Distance measurement (odometry) on vehicles
Speed and position control, for example with PID
Drives with high torque at low speed

Documentation:

DFRobot Wiki FIT0186 with wiring diagram and example code for Arduino

Technical Data:

Manufacturer: DFRobot
Manufacturer SKU: FIT0186
Type: GB37Y3530-12V-251R
Rated voltage: 12 V DC, starts from 1 V
Gear ratio: 43.8:1
No-load speed: 251 RPM ± 10 %
No-load current: 350 mA
Stall torque: 18 kg·cm (about 1.8 Nm)
Stall current: 7 A
Insulation resistance: 20 MΩ
Encoder: Hall, 2 channels, 5 V supply
Encoder resolution: 16 CPR on the motor shaft, 700 CPR on the output shaft
Output shaft: 6 mm, D-shaped, 15.5 mm long
Mounting: 6 × M3, hole spacing 15.5 mm, screw depth max. 3 mm
Wiring according to DFRobot: red motor +, black motor −, green encoder GND, blue encoder VCC 5 V, yellow encoder A, white encoder B
Marking: GB37Y3530-43.8EN, DC12V 251RPM
Dimensions: Ø 37 × 74 mm
Connection cable length: 20 cm
Weight: 233 g (DFRobot: 205 g)