Inner rotor BLDC motor features 28mm frame size, 4 poles, three phase, optional 15V/ 24V DC, 4W, 15W, 21W rated power, 5mN.m, 14mN.m, 50mN.m rated torque, inner motor length up to 28mm, 38mm, 77mm. The hightlight of the internal rotor BLDC motor is that the rotor has smaller moment of inertia of the rotating shaft and better heat dissipation, particularly suitable for high-speed applications.
|Electrical Specifications||Motor Model*||P28BL28||P28BL38||P28BL77|
|Accessories*||Connector, gearbox, encoder|
|Phase & No. of Poles||3 phase, 4 poles|
|Rated Voltage||15V DC||24V DC||24V DC|
|Rated Torque||5 mN.m||14 mN.m||50 mN.m|
|Continuous Running Torque||6 mN.m||17 mN.m||60 mN.m|
|Peak Torque||15 mN.m||42 mN.m||150 mN.m|
|Line to Line Resistance||8.2 ohms at 20℃||4.2 ohms at 20℃||4.2 ohms at 20℃|
|Line to Line Inductance||2.3mH||1.69mH||2.3mH|
|Torque Constant||14.3 mN.m/A||16.9 mN.m/A||37.4 mN.m/A|
|Back EMF||1.0 Vrms/KRPM||1.25 Vrms/KRPM||2.77 Vrms/KRPM|
|Rotor Inertia||2.35 g.cm2||3.69 g.cm2||10.98 g.cm2|
|Weight||0.06 Kg||0.082 Kg||0.28 Kg|
|Certification||CE, RoHS, ISO 9001, ISO 14001, IATF 16949|
|General Specifications||Winding Type||Star connection|
|Hall Effect Angle||Electrical Angle of 120 degree|
|Radial Play||0.02mm @ 450g|
|Axial Play||0.08mm @ 450g|
|Max. Radial Force||10Nm (10mm from the flange)|
|Max. Axial Play||2Nm|
|Insulation Resistance||100MΩ, 500VDC|
|Insulation Class||Class B|
Note: * denotes optional or customized parameters and you can select every parameter in drop-down lists to complete your order.
Brushless DC Motor Dimension (Unit: mm)
|UL 1007 AWG28||Yellow||Hall Power Supply (positive) (Wcc)|
|Blue||Hall U (Hu)|
|Orange||Hall V (Hu)|
|Brown||Hall W (Hu)|
|White||Hall Power Supply (negative) (GND)|
|UL 1007 AWG26||Green||Phase U|
KNOWLEDGE BASE --- Advantages of Inner Rotor BLDC Motors
In an inner rotor brushless motor, a rotor with permanent magnets rotates around an axis in a fixed stator with coils around it. Here are the main advantages of internal rotor brushless motors:
- The moment of inertia of the rotating shaft is small.
- The heat dissipation performance is better.
- Inner rotor BLDC motor provides ability to downsize the main unit.
- This brushless motor is particularly suitable for high-speed applications where low noise and reliable, long life operation are particularly important.
- Widely used in household industry, office automation, industrial control, ATM, energy industry, textile industry, automotive industry, logistics industry, medical industry, etc.