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
Worm Gearbox Gearmotor + Encoder Dimensions

Wiring Connections:

  • Red - Motor power terminal(+).
  • Black - Motor power terminal(-).
  • Green - Quad encoder Ground.
  • Blue - Quad encoder +5V Vcc.
  • Yellow - Quad encoder A signal.
  • White - Quad encoder B signal.

MODEL NO LOAD AT MAXIMUM EFFICIENCY STALL GEARBOX Pulses (Single Channel): 12
per motor rev.
NOMINAL SPEED CURRENT SPEED CURRENT TORQUE POWER CURRENT TORQUE
Volt rpm A rpm A Kg·cm W A Kg·cm Ratio PPR (Single Channel)
Output Shaft
GMWE32W1650 12V 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

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.

Worm Gearbox Gearmotor Stand Dimensions
Worm Gearbox Gearmotor Stand Dimensions

Select from our range of Worm Gearmotors with an Encoder below.

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Bracket for GMW32 Motors
GMW32WBKT
Bracket for GMW32 Motors. ..
Stock: 11 pcs
£4.26 /each
Excl. VAT: £3.55
Worm Gearmotor, Ratio 40:1, with encoder.
GMWE32W0040
Worm Gearmotor + Hall Sensor Encoder, Ratio 40:1. Output Shaft: 6mm Dia. Output ..
Stock: 2 pcs
£25.19 /each
Excl. VAT: £20.99
10 or more: £23.17 /each
25 or more: Please ask
Worm Gearmotor, Ratio 69:1, with encoder
GMWE32W0069
Worm Gearmotor + Hall Sensor Encoder, Ratio 69:1. Output Shaft: 6mm Dia. Output speed..
Stock: 2 pcs
£25.19 /each
Excl. VAT: £20.99
10 or more: £23.17 /each
25 or more: Please ask
Worm Gearmotor, Ratio 100:1, with encoder
GMWE32W0100
Worm Gearmotor + Hall Sensor Encoder, Ratio 100:1. Output Shaft: 6mm Dia. Output..
Stock: 2 pcs
£25.19 /each
Excl. VAT: £20.99
10 or more: £23.17 /each
25 or more: Please ask
Worm Gearmotor, Ratio 180:1, with encoder
GMWE32W0180
Worm Gearmotor + Hall Sensor Encoder, Ratio 330:1. Output Shaft: 6mm Dia. Output..
Stock: 2 pcs
£26.33 /each
Excl. VAT: £21.94
10 or more: £24.22 /each
25 or more: Please ask
Worm Gearmotor, Ratio 330:1, with encoder
GMWE32W0330
Worm Gearmotor + Hall Sensor Encoder, Ratio 330:1. Output Shaft: 6mm Dia. Output..
Stock: 1 pc
£26.33 /each
Excl. VAT: £21.94
10 or more: £24.22 /each
25 or more: Please ask
Worm Gearmotor, Ratio 950:1, with encoder
GMWE32W0950
Worm Gearmotor + Hall Sensor Encoder, Ratio 950:1. Output Shaft: 6mm Dia. Output..
Stock: 2 pcs
£28.00 /each
Excl. VAT: £23.33
10 or more: £25.75 /each
25 or more: Please ask
Worm Gearmotor, Ratio 1650:1, with encoder
GMWE32W1650
Worm Gearmotor + Hall Sensor Encoder, Ratio 1650:1. Output Shaft: 6mm Dia. Outpu..
Stock: 2 pcs
£31.15 /each
Excl. VAT: £25.96
10 or more: £28.66 /each
25 or more: Please ask