Brushed DC Motors

Dunkermotoren GR42 SERIES Brushed DC Motor

The Dunkermotoren GR42 Series Brushed DC Motor is a compact and efficient solution, delivering continuous power outputs up to 21W with peak performance reaching 38W. Designed for diverse applications, this series is ideal for automation systems, small machinery, and precision tools requiring reliable and precise motion control.

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Dunkermotoren GR42 Series Brushed DC Motor

Features

  • Nominal Voltage: 12~40VDC
  • Stack Length: x25mm~x40mm
  • Nominal Torque: 0.038~0.057Nm
  • Nominal Speed: 2500~3600rpm
  • Nominal Output Power: 3.04~10.27W
  • Modular compatibility with optional gearboxes, controllers, encoders, and brakes
Selection Table
DATA UNITS GR 42x25 GR 42x40
Nominal voltage VDC 12 24 40 12 24 40
Stack length mm x25 x25 x25 x40 x40 x40
Nominal current A 1.9 0.86 0.55 2.7 1.2 0.8
Nominal torque Nm 0.039 0.038 0.039 0.053 0.057 0.057
Nominal speed rpm 3450 3600 3700 3750 3100 3400
Stall torque Nm 0.19 0.2 0.216 0.319 0.33 0.356
Maximum torque Nm 0.19 0.2 0.216 0.319 0.33 0.356
No load speed rpm 4350 4200 4400 4550 3800 3950
Nominal output power W 14.1 14.3 15.1 20.8 18.5 20.3
Maximum output power W 21.6 22.1 25 37.95 32.3 36.6
Torque constant Nm A-1 0.0253 0.0514 0.081 0.0247 0.0584 0.0913
Terminal Resistance Ω 1.54 5.95 14.5 0.91 4.2 10.1
Terminal inductance mH 1.8 8.9 18.9 1 5.1 15.7
Starting current A 7.8 4 2.76 13.2 5.68 3.97
No load current A 0.34 0.17 0.11 0.44 0.18 0.12
Demagnetisation current A ≥ 14 ≥ 6.5 ≥ 4.1 ≥ 24 ≥ 10.5 ≥ 6.3
Rotor inertia gcm2 71 71 71 110 110 110
Weight of motor kg 0.39 0.39 0.39 0.49 0.49 0.49
External controller Model BGE 5510 dPro, BGE 6005 A BGE 5510 dPro, BGE 6005 A
Encoder Model RE 20, RE 30 (TI), RE 56 (TI) RE 20, RE 30 (TI), RE 56 (TI)
Brakes Model E 38 R E 38 R
Magnetic pulse encoder Model ME 52, MG 2 ME 52, MG 2
Planetary gearbox Model PLG 32, PLG 42 K, PLG 42 S, PLG 52 EB/HT PLG 32, PLG 42 K, PLG 42 S, PLG 52 EB/HT
Right-angle gearbox Model SG 45, SG 62 SG 45, SG 62
IP Cover Model IP54 cover IP54 cover
Downloads
GR_42x25_Brushed_DC_Motor_Datasheet.pdf
GR_42x40_Brushed_DC_Motor_Datasheet.pdf
DATA UNITS GR 42x25 GR 42x40
Nominal voltage VDC 12 24 40 12 24 40
Stack length mm x25 x25 x25 x40 x40 x40
Nominal current A 1.9 0.86 0.55 2.7 1.2 0.8
Nominal torque Nm 0.039 0.038 0.039 0.053 0.057 0.057
Nominal speed rpm 3450 3600 3700 3750 3100 3400
Stall torque Nm 0.19 0.2 0.216 0.319 0.33 0.356
Maximum torque Nm 0.19 0.2 0.216 0.319 0.33 0.356
No load speed rpm 4350 4200 4400 4550 3800 3950
Nominal output power W 14.1 14.3 15.1 20.8 18.5 20.3
Maximum output power W 21.6 22.1 25 37.95 32.3 36.6
Torque constant Nm A-1 0.0253 0.0514 0.081 0.0247 0.0584 0.0913
Terminal Resistance Ω 1.54 5.95 14.5 0.91 4.2 10.1
Terminal inductance mH 1.8 8.9 18.9 1 5.1 15.7
Starting current A 7.8 4 2.76 13.2 5.68 3.97
No load current A 0.34 0.17 0.11 0.44 0.18 0.12
Demagnetisation current A ≥ 14 ≥ 6.5 ≥ 4.1 ≥ 24 ≥ 10.5 ≥ 6.3
Rotor inertia gcm2 71 71 71 110 110 110
Weight of motor kg 0.39 0.39 0.39 0.49 0.49 0.49
External controller Model BGE 5510 dPro, BGE 6005 A BGE 5510 dPro, BGE 6005 A
Encoder Model RE 20, RE 30 (TI), RE 56 (TI) RE 20, RE 30 (TI), RE 56 (TI)
Brakes Model E 38 R E 38 R
Magnetic pulse encoder Model ME 52, MG 2 ME 52, MG 2
Planetary gearbox Model PLG 32, PLG 42 K, PLG 42 S, PLG 52 EB/HT PLG 32, PLG 42 K, PLG 42 S, PLG 52 EB/HT
Right-angle gearbox Model SG 45, SG 62 SG 45, SG 62
IP Cover Model IP54 cover IP54 cover
GR_42x25_Brushed_DC_Motor_Datasheet.pdf
GR_42x40_Brushed_DC_Motor_Datasheet.pdf

Find the Right Model

Model Number Nom. Voltage (Vdc) Nom. Torque (Nm) Nom. Speed (RPM)
product variant GR42x25-12 12Vdc 0.039Nm 3450 RPM
product variant GR42x25-24 24Vdc 0.038Nm 3600 RPM
product variant GR42x25-40 40Vdc 0.039Nm 3700 RPM
product variant GR42X40-12 12Vdc 0.053Nm 3700 RPM
product variant GR42X40-24 24Vdc 0.057Nm 3100 RPM
product variant GR42X40-40 40Vdc 0.057Nm 3400 RPM

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