If you're serious about your quad-copters performance, then look no further than the AX-4008M. Built with high-end 45SH magnets, a high pole count and custom motor mount, this quad-motor is designed purely for multi-rotor applications.
The AX-4008M motor has a 4mm shaft and is supplied with a prop adaptor with a 6mm shaft. This motor has a low center of gravity and is factory balanced to keep vibration to a minimum.
Voltage: 4~5S (14.8~18.5V)
Max Current: 32A
Max Power: 590W
Idle Current: 0.86A@10V
Main Shaft: 4mm
Mounting Bolt Hole Spacing: 25mm
Mounting Bolt Thread: 3mm
Suggested ESC: 40A
Max Currents (A)
Length B (mm):
Can Length D(mm)
Unit Weight (g):
Total Length E(mm)
This 4 motor is a problem with the bearing anchorage and motor shaft.
1. This issue applies to all four motors.
This is clearly seen as a QC problem and design flaw for bearings in motor production. A good motor will not be able to break away the bearings in the bearing slots. good motor is not hold the bearing by use glue and inserting a tape into the clearance of the bearing.
- Obviously all four motors had bearing anchorages, but the bearings were held loosely using tape and a small amount of glue.
So, serious problem has occurred with a slight impact (landing, etc.) and the bearings being dislodged by the lifting force of the propellers when flying.
The bearings were held loosely in place by adhesive and tape and were released into position, By constant shock and propeller lifting force allowing the bearing to move into the slot that should have been properly fitted.
However, after bearing is properly secured to the slot, the stator is 3mm lifting became a deadly phenomenon.
2. Motor shaft problem.
QC of the motor seems to be uncertain. because the other three motors have problems with the bearings, but the shaft is not a problem.
One of the four motors had a defective motor shaft, with a defective bearing.
The shaft fixing screw was loosened and a large clearance was generated so that the motor can shake.
As a result, I tried to repair these four motors themselves, but the condition still did not improve.