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You are here: Main page > DC motors with spur gearbox > Series SG300
SG300 - DC motor with spur gearbox

DC motor series SG300 with spur gearbox

Torque: 1,0...4,5 kg-cm
Speed: 6,9...258 rpm
Voltage: 12, 24 V
Diameter: 30 mm

  • DC carbon-brush motor
  • It contains a filter to suppress electromagnetic interference
  • 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 20:1 30:1 36:1 50:1 60:1 75:1 90:1 100:1 120:1 150:1
12 VRated torque [kg-cm] 1.0 1.5 1.5 2.0 2.0 3.0 3.0 3.0 4.0 4.0
Rated speed [rpm] 255 168 150 107 91 73 62 56 46.3 37.5
24 VRated torque [kg-cm] 1.0 1.5 1.5 2.0 2.0 3.0 3.0 3.0 4.0 4.0
Rated speed [rpm] 258 168 150 107 91 73 62 56 46.3 37.4
Wieght [g] 162 162 162 162 162 162 162 162 171 171
Ratio 180:1 200:1 250:1 300:1 400:1 600:1 900:1
12 VRated torque [kg-cm] 4.5 4.5 4.5 4.5 4.5 4.5 4.5
Rated speed [rpm] 32 28.8 24 19.5 15.2 10.4 6.9
24 VRated torque [kg-cm] 4.5 4.5 4.5 4.5 4.5 4.5 4.5
Rated speed [rpm] 31.8 28.7 24 19.5 15.1 10.3 6.9
Wieght [g] 171 171 171 171 171 171 171
Dimensions of DC motor with spur gearbox - series SG300

Gearboxes specifications

  • Backlash, at no-load ≤ 2 °
  • Radial load ≤ 0.8 kg (10 mm from flange)
  • Shaft axial load ≤ 0.6 kg
  • Shaft press fit force max. ≤ 10 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 20:1 30, 36:1 50, 60:1 75, 90, 100:1 120, 150:1 180, 200, 250, 300, 400,
600, 900:1
Rated permissible torque [kg-cm] 1.0 1.5 2.0 3.0 4.0 4.5
Efficiency [%] 66 66 66 66 53 53
Length L [mm] 23 23 23 23 28 28

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 78 5290 ≤530 6500 ≤150 4.22
24 74 5250 ≤250 6500 ≤85 3.97
Series SG300 - motor characteristics
 
 
 
Ing. Jiří Gross
Bartolomějská 63, Brno, Czech republic
e-mail: jiri.gross@dcmotory.eu
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