- BLDC Motor
- DB17 BLDC Motor
Size: Nema 17
Peak Torque: to 33 oz-in or 23 NcmDB17
- DB34 BLDC Motor
Size: Nema 34
Peak Torque: to 580 oz-in or 410 NcmDB34
- DB42 BLDC Motor
Size: Nema 42
Peak Torque: to 840 oz-in or 593 NcmDB42
- E22 BLDC Motor
Size: 2.2 inches or 5.6 cm
Peak Torque: to 200 oz-in or 141 NcmE22
- E30 BLDC Motor
Size: 3.0-in or 7.6 cm
Peak Torque: to 245 oz-in or 173 NcmE30
- E33 BLDC Motor
Size: 3.3 inches or 8.4 cm
Peak Torque: to 575 oz-in or 406 NcmE33
- E37 BLDC Motor
Size: 3.7 inches or 9.4 cm
Peak Torque: to 725 oz-in or 512 NcmE37
- EXC23 BLDC Motor
Type: Servo Motor
Size: 2.3 inches or 5.8 cm
Peak Torque: to 200 oz-in or 141 NcmEXC23
- EXC34 BLDC Motor
Type: Servo Motor
Size: 3.4 inches or 8.6 cm
Peak Torque: to 810 oz-in or 572 NcmEXC34
- EXC42 BLDC Motor
Type: Servo Motor
Size: 4 inches or 10.2 cm
Peak Torque: to 1250 oz-in or 883 NcmEXC42
- EXC56 BLDC Motor
Type: Servo Motor
Size: 5 inches or 13 cm
Peak Torque: to 2400 oz-in or 1695 NcmEXC56
- RP23 BLDC Motor
Size: Nema 23
Peak Torque: to 190 oz-in or 134 NcmRP23
- EAD BLDC Legacy Catalog (PDF)
- ElectroCraft Legacy Catalog (PDF)
- C-Frame AC
- Housed AC
- Linear Actuator
- Motion Control
- PMDC
- Stepper
- Transmissions
DB42 : DB-Series BLDC Motor
Size: Nema 42
Peak Torque: to 840 oz-in or 593 Ncm
Good-Performance. Good Price.
Our DB-Series Nema 42 is a good-performance brushless motor with ball-bearing construction, dynamically balanced rotors, and low audible and magnetic noise. It does not include brushes or a commutator. It is compatible with all three-phase brushless DC motor amplifiers.

DB42 Speed / Torque Curves


DB42 Mechanical / Winding Data
| Stack Size Models | DB42- 123 | DB42- 180 | DB42- 265 |
|---|---|---|---|
| Continuous Stall Torque (oz-in) | 123 | 180 | 265 |
| Continuous Stall Torque (Ncm) | 86.85 | 127.10 | 187.12 |
| Peak Torque (oz-in) | 395 | 610 | 840 |
| Peak Torque (Ncm) | 278.91 | 430.72 | 593.12 |
| Motor Constant (oz-in / Watt) | 14.30 | 20.00 | 28.00 |
| Electrical Constant (msec) | 1.07 | 1.39 | 1.70 |
| Mechanical Constant (msec) | 2.08 | 1.59 | 1.35 |
| Rotor Inertia (oz-in-sec2) | 0.0036 | 0.0054 | 0.0089 |
| Rotor Inertia (gm-cm2) | 254.2 | 381.3 | 628.5 |
| Thermal Resistance (C / Watts) | 1.3 | 1.2 | 1.0 |
| Weight (oz) | 230.0 | 255.0 | 300.0 |
| Weight (Kg) | 6.5 | 7.2 | 8.5 |
| Length (inches) | 5.7 | 6.2 | 7.2 |
| Length (cm) | 14.5 | 15.7 | 18.3 |
| Number of Poles | 4 | 4 | 4 |
| Winding Models | DB42- 123V36 | DB42- 123V48 | DB42- 123V90 | DB42- 123V160 | DB42- 180V36 | DB42- 180V48 | DB42- 180V90 | DB42- 180V160 | DB42- 265V36 | DB42- 265V48 | DB42- 265V90 | DB42- 265V160 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Design Voltage (VDC) | 36 | 48 | 90 | 160 | 36 | 48 | 90 | 160 | 36 | 48 | 90 | 160 |
| Continuous Current (Amps) | 8 | 6 | 4 | 2 | 9 | 8 | 4 | 3 | 12 | 10 | 6 | 3 |
| Peak Current (Amps) | 25 | 21 | 13 | 8 | 32 | 27 | 16 | 10 | 39 | 31 | 19 | 12 |
| Voltage Constant ±10% (VDC/kRPM) | 12.0 | 14.4 | 22.9 | 38.5 | 14.1 | 16.9 | 28.8 | 46.8 | 16.3 | 20.1 | 33.1 | 52.6 |
| Torque Constant ±10% (oz-in / Amp) | 16.2 | 19.5 | 30.9 | 52.1 | 19.1 | 22.8 | 38.9 | 63.3 | 22.0 | 27.2 | 44.8 | 71.1 |
| Torque Constant ±10% (Ncm / Amp) | 1.144 | 1.377 | 2.182 | 3.679 | 1.349 | 1.610 | 2.747 | 4.470 | 1.554 | 1.921 | 3.164 | 5.021 |
| Resistance ±10% (Ohms) | 1.3 | 1.9 | 4.7 | 13.2 | 0.9 | 1.3 | 3.8 | 9.9 | 0.6 | 0.9 | 2.6 | 6.4 |
| Inductance ±10% (mH) | 1.4 | 2.0 | 5.0 | 14.1 | 1.3 | 1.8 | 5.3 | 13.9 | 1.0 | 1.5 | 4.2 | 12.3 |
DB42 Outline Drawing
DB42 Commutation