This spindle working voltage: 48VDC 12000 R / min

Motor diameter: 57MM 

Total length: 140MM 

Torque: 0.39NM

Packing List: 

1x The spindle motor 500w (with ER11-3 collet)  

1 x driver adjustable-speed 50/60 hz

1 x bracket 57mm with 4 screws

1 x power input 220v output 48 DC  500W