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 | 123V36 | 123V48 | 123V90 | 123V160 | 180V36 | 180V48 | 180V90 | 180V160 | 265V36 | 265V48 | 265V90 | 265V160 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Design Voltage (VDC) | 36 | 48 | 90 | 160 | 36 | 48 | 90 | 160 | 36 | 48 | 90 | 160 |
| Continuous Current (Amps) | 7.5 | 6.1 | 3.8 | 2.2 | 8.9 | 7.6 | 4.4 | 2.6 | 12.3 | 9.9 | 5.7 | 3.4 |
| Peak Current (Amps) | 24.7 | 20.6 | 13.0 | 7.7 | 32.2 | 27.1 | 15.8 | 9.8 | 38.7 | 31.3 | 19.1 | 12.1 |
| 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 Sequence
