DP25 Brush Motor
DirectPower™ Series

Summary Details

Size: Nema 25
Peak Torque: to 215 oz-in or 151.8 Ncm

Better-Performance. Good Price.
Our ElectroCraft DirectPowerTM Nema 25 is a conventional brush-type permanent magnet DC motor. It provides torque up to 215 oz-in or 151.8 Ncm.

Additional Product Details

DP25 Outline Drawing

DP25 Speed / Torque Curves

torque_dp25-30.gif torque_dp25-35.gif torque_dp25-45.gif

DP25 Mechanical / Winding Data

DP25 Stack/Torque Sizes
Imperial DP25-30 DP25-35 DP25-45
Metric DP25M-21 DP25M-25 DP25M-32
Continuous Stall Torque¹ (oz-in) 30 30 45
Continuous Stall Torque¹ (Ncm) 21.18 21.18 31.77
Peak Torque² (oz-in) 142 142 215
Peak Torque² (Ncm) 100.27 100.27 151.81
Rotor Inertia (oz-in-sec2) 0.0049 0.0074 0.0096
Rotor Inertia (g-cm2) 346.0 522.6 678.0
Weight (oz) 41.6 52.8 62.4
Weight (Kg) 1.2 1.5 1.8
Length³ (inches) 4.0 4.5 5.0
Length³ (mm) 10.2 11.4 12.7
Number of Poles 2 2 2

DP20 Winding Options
Imperial 30V12 30V24 35V12 35V24 45V12 45V24
Metric 21V12 21V24 25V12 25V24 32V12 32V24
Design Voltage
(VDC)
12 24 12 24 12 24
Continuous Current¹
(Amps)
9 5 10 5 8 4
Peak Current²
(Amps)
32 16 40 20 30 16
Voltage Constant
±10%
(VDC/kRPM)
3.3 6.6 3.5 7.0 4.9 9.7
Torque Constant
±10%
(oz-in / Amp)
4.4 8.9 4.7 9.4 6.6 13.2
Torque Constant
±10%
(Ncm / Amp)
3.107 6.285 3.319 6.638 4.661 9.321
Resistance
±10%
(Ohms)
0.3 0.6 0.2 3.0 0.3 3.0
Inductance
±10%
(mH)
0.3 1.2 0.3 0.8 0.4 1.0
Motor Constant
(oz-in / √ Watt)
8.8 11.26 10.51 10.51 12.94 13.2
Motor Constant
(Nm / √ Watt)
6.21 7.95 7.42 7.42 8.82 9.32
Electrical Constant
(msec)
1.0 2.0 1.5 0.27 1.33 0.33
Mechanical Constant
(msec)
10.8 5.26 9.5 35.6 9.36 23.4
Thermal Resistance
(C / Watts)
3.5 3.5 3.1 3.1 3.7 3.7

NOTES:

¹ Continuous rating based on 25°C ambient temperature, winding temperature rise of 100°C and motor mounted to a 12x12x0.50 inch aluminum heatsink.
² 10 seconds at 25°C ambient, 100°C winding temperature.
³ Inductance bridge measurement method @ 1kHz.

DP25 View CAD

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