Main page > DC motors with spur gearbox > Series SG371

DC motor series SG371 with spur gearbox

Torque: 1...6 kg-cm
Speed: 2.0...532 rpm
Voltage: 12, 24 V
Diameter: 37 mm
CE SG371 - DC motor with spur gearbox
  • DC carbon-brush motor
  • It contains a filter to suppress electromagnetic interference
  • Bidirectional, the direction of rotation can be set by changing the polarity of the supply voltage
  • There is also a version with encoder
  • Spur gearbox with metal gears (except first stage)
  • Only first stage is made of bakelite for noise reduction purpose
  • Sleeve bearings

Gear motor specifications

Ratio 10:1 18:1 30:1 50:1 60:1 75:1 90:1 100:1 120:1 150:1 180:1
12 VRated torque [kg-cm] 1.0 1.0 2.0 3.0 3.0 4.0 4.0 6.0 6.0 6.0 6.0
Rated speed [rpm] 528 313 185 109 95 76 63 55 47 36 31.5
24 VRated torque [kg-cm] 1.0 1.0 2.0 3.0 3.0 4.0 4.0 6.0 6.0 6.0 6.0
Rated speed [rpm] 532 315 186 111 96 77 64 55.5 48 36 32
Wieght [g] 306 313 313 320 320 320 320 320 326 326 326
Ratio 200:1 250:1 300:1 500:1 600:1 750:1 1000:1 1500:1 3000:1
12 VRated torque [kg-cm] 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0
Rated speed [rpm] 29 22.5 19.5 11.5 9.8 8.0 5.9 3.9 2.0
24 VRated torque [kg-cm] 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0
Rated speed [rpm] 29.5 23 20 11.8 9.9 8.0 6.0 4.0 2.0
Wieght [g] 326 326 326 332 332 332 332 340 340
Dimensions of DC motor with spur gearbox - series SG371

Gearboxes specifications

  • Backlash, at no-load ≤ 2 °
  • Radial load ≤ 1 kg (10 mm from flange)
  • Shaft axial load ≤ 0.7 kg
  • Shaft press fit force max. ≤ 20 kg
  • Radial play of shaft ≤ 0.05 mm
  • Thrust play of shaft ≤ 0.35 mm
  • Operating temperature range -10...60 °C
  • Operating relative humidity 20...85 %
Ratio 10:1 18:1 30:1 50, 60:1 75, 90:1 100:1 120, 150, 180,
200, 250, 300:1		 500, 600,
750, 1000:1		 1500,
3000:1
Rated permissible torque [kg-cm] 1.0 1.0 2.0 3.0 4.0 6.0 6.0 6.0 6.0
Efficiency [%] 81 73 73 66 66 66 59 53 48
Length L [mm] 19.5 22.0 22.0 24.5 24.5 24.5 27.0 29.5 32.0

Motor data

Rated voltage
[V]		Rated torque
[g-cm]		Rated speed
[rpm]		Rated current
[mA]		No load speed
[rpm]		No load current
[mA]		Rated output
[W]
12 250 4930 ≤1600 6000 ≤250 12.8
24 240 5150 ≤750 6000 ≤130 12.7
Series SG371 - motor characteristics

Encoder specifications

Wiring of connector for motor with encoder
  • Two channel hall effect encoder with 90° phase shift
  • Open collector output
  • 7 pulses per motor revolution (PPR) and senzor
  • Supply voltage 3.5 až 20 V
  • Length of rear cover (D) 13.5 mm
  • We offer a suitable connector for PCB

More pictures

DC motor series SG371 with encoder
DC motor series SG371 with encoder
© 2025 - Ing. Jiří Gross - DC motors with spur and planetary gearbox, linear actuators