Specifications:
Brushless DC Motor:
Working Voltage: 48V DC
Power: 500W
Speed: 12000r/min
Torque: 0.6N.m
Insulation Resistance: >2MΩ
Dielectric Strength: 400V
Front & Back Cover Diameter: 5.7cm/2.2in
Middle Diameter: 5.5cm/2.1in
Chuck Length: 4.5cm/1.7in(cutter bar part, including nut and core)
Chuck Diameter: 2cm/0.8in
Motor Overall Length: 19.4cm/7.6in (including fan, chuck and motor)
Spindle Radial Run-out: About 0.01-0.03
Motor Driver(WS55-220):
Voltage 24-50VDC
Rated Current 12A
Current Limiting About 14A
Max. Supporting Speed 20000RPM
Speed Control 1, Connect to external potentiometer;
2, Connect to external 10VDC voltage.
Speed Output PG (there is a 5V speed pulse output between this port and earth). If output frequency is P(Hz), motor pole number is N, speed is F(RPM), then output speed frequency, P=F*N/60
Alarm Output ALM , there is alarm pulse output between this port and earth
1.This port outputs 5V high level when normal working;
2. When it is powered on, but speed control is quite low and motor does not rotate, port is low level; that is to say, when EN button is open, as long as motor does not rotate, alarm port is low level, indicating the state is abnormal and need to be dealt with;
3. When it is under-voltage, over-voltage, stall, lacking phase or phase short circuit, port is low level.

Package Includes:
1 x Brushless Motor
1 x Motor Driver
1 x Clamp
1 x Potentiometer and Switch

Note:
1. Please allow small size error due to manual measurement. Thanks for your understanding.
2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.