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Worm Gearbox Gearmotor + Encoder

Worm and Wheel Gearmotors

Permanent Magnet DC motors together with Worm Gear type Gearboxes offer a relatively high torque output in a compact size and with an output at right angles to the motor. An advantage of Worm and Wheel Gearboxes is limited back drivability: the worm driven by the motor can easily turn the gear on the output, but the gear cannot turn the worm. This provides a form of brake which can be useful in certain applications for example lifting. These motors can be run in both directions.

Quadrature Encoder

A Quadrature Encoder can be used to calculate the speed, direction and distance travelled of the output shaft of our worm gear motors. The rear of the motor is equipped with a dual channel Hall effect quadrature encoder with outputs A and B. The phase difference between the channels is 90 degrees. A single circuit cycle equals 12PPR of the motor. To calculate the pulses per revolution of the output shaft of the gearbox for a single channel you would multiply the gear ratio by 12.

For maximum resolution, counting both the leading and trailing edges of the pulses on both channels A and B of the encoder will quadruple the number of pulses per revolution, so in this case you would multiply the gear ratio by 48 to calculate the pulses per revolution of the output shaft.

Worm Gearbox Gearmotor with Encoder

Wiring Connections

Gearbox Pulses (Single Channel): 12 per motor rev.
GMWE32W1650 3 0.03 2.58 0.11 10 1.32 0.3 25 1:1650 19800
GMWE32W0950 9 0.06 7.5 0.31 5.5 3.72 1.58 30 1:950 11400
GMWE32W0330 24 0.06 21 0.27 1.75 3.24 1.58 10 1:330 3960
GMWE32W0180 45 0.08 39 0.27 1 3.24 2.4 7.5 1:180 2160
GMWE32W0100 83 0.05 66 0.3 0.8 3.6 1.2 4.5 1:100 1200
GMWE32W0069 120 0.055 96 0.3 0.5 3.6 1.45 3 1:69 828
GMWE32W0040 200 0.1 160 0.35 0.1 4.2 2 2.2 1:40 480

Nominal voltage: 12V for all models.

Worm and Wheel Gearmotor Bracket

Stainless Steel bracket to fit all Worm and Wheel Gearmotors. The bracket includes the correct screws for attaching the bracket to the motor.

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