BLDC MotorASLONG BLDC2838W brushless DC motor · Ø28 mm
BLDC2838W-7.4V
3.752 W, 7.4 V Ø28 mm BLDC motor from ASLONG: 0.00829 N·m rated at 4329 rpm.
Manufacturer datasheet: ASLONG · BLDC2838W-7.4V ↗ (checked 2026-10-18)Maker profile & contacts →
Figures are copied from the maker’s published datasheet; curves are calculated from them. Confirm with the manufacturer before ordering. Not stated on the datasheet, estimated from it: torque constant (fitted to the rated point), resistance (fitted to the rated point), inductance, rotor inertia, weight, insulation class, IP rating.
How this motor is made
Full manufacturing overview: 57 mm Inner-rotor BLDC Motor →Ø28 mm frame; built with the same process as the 57 mm inner-rotor reference series.
- 1. Lamination stamping & interlocking
- 2. Stator insulation
- 3. Winding
- 4. Terminal connection
- 5. Stator in-process test
- 6. Impregnation & curing
- 7. Rotor assembly
- 8. Magnetizing
- 9. Rotor balancing
- 10. Final assembly
- 11. End-of-line test
Export certification: Low-voltage motor without electronics
- Rated power
- 3.76 W
- Rated torque
- 0.00829 N·m
- Rated speed
- 4,329 rpm
- Rated efficiency
- 63.6 %
Performance curves
Right axis:
SpeedEfficiency (right axis)
Calculated with the linear DC-motor model (constant 7.4 V supply, ignoring resistance rise with temperature).
Full specifications
General
- Motor type
- BLDC Motor
- Series
- ASLONG BLDC2838W brushless DC motor
- Frame / flange
- Ø28 mm
Rated Values
- Rated voltage
- 7.4 V
- Rated power
- 3.76 W
- Rated torque
- 0.00829 N·m
- Rated speed
- 4,329 rpm
- Rated current
- 0.798 A
Performance
- Stall torque
- 0.0635 N·m
- No-load speed
- 4,979 rpm
- Rated efficiency
- 63.6 %
- Peak efficiency
- 64.3 %
Electrical
- Torque constant Kt
- 0.0136 N·m/A
- Back-EMF constant Ke
- 1.43 V/krpm
- Resistance
- 1.53 Ω
- Inductance
- 2.29 mH
- No-load current
- 0.19 A
- Stall current
- 4.84 A
- Electrical time constant
- 1.5 ms
- Mechanical time constant
- 3.29 ms
Mechanical
- Rotor inertia
- 4 g·cm²
- Body length
- 38 mm
- Weight
- 0.11 kg
- Power density
- 34.2 W/kg
- Protection
- IP40
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