48V BLDC Outrunner Hub Motor 1000W

21 Nm rated torque, 420 RPM, no gearbox: the AK-BLDC-1000W-F is a 48 V outer-rotor hub motor with 1,000 W rated power for direct-drive applications in fitness, mobile robotics and e-mobility.

High-pole-count BLDC outer-rotor motors combine a high torque constant with a compact design and enable direct-drive solutions without gearbox wear. The AK-BLDC-1000W-F delivers 21 Nm rated torque and up to 48 Nm peak torque at 48 VDC.

Features

• Direct drive without gearbox: no backlash, no wear, direct torque control
• 21 Nm rated torque, 48 Nm peak torque
• 48 VDC nominal voltage, operating range 36 to 50 V
• Optional incremental encoder (1024 pulses per revolution)
• Class F insulation (155 °C) for continuous operation under thermal load
• Robust outer-rotor construction with M12 × 1.5 shaft thread

Technical Specifications

Parameter	Value	Unit
Rated voltage	48	VDC
Operating range	36–50	V
Rated power	1 000	W
Rated current	22	A RMS
Peak current	30	A
Rated torque	21	Nm
Peak torque	48	Nm
Torque constant Kt	0.86	Nm/A
Back-EMF constant	0.09	V/RPM
Rated speed	420 ±10 %	RPM
No-load speed	532	RPM
Pole pairs	20
Phase resistance (25 °C)	137	mOhm
Phase inductance	349	µH
Insulation class	Class F (155 °C)
Outer diameter	155	mm
Axial length	115	mm
Shaft thread	M12 × 1.5
Weight	4.7	kg
Encoder (optional)	1024 pulses/revolution

Typical Applications

• Cable pull machines and strength training equipment (direct-drive fitness applications)
• E-bike and e-scooter drives (rear wheel hub motor)
• Mobile autonomous robotics platforms
• Test benches and load simulation units
• Industrial direct drives with VESC-based control

Scope of Delivery

• AK-BLDC-1000W-F motor
  
• Optional incremental encoder available at extra cost

Downloads

• Datasheet AK-BLDC-1000W-F (EN)
• Datasheet AK-BLDC-1000W-F (DE)