https://www.ebay.com/itm/183702702635

Spindle Motor Specifications :
Power : 5.5KW
Voltage : 220V
Current : 20A
Frequency : rate 400Hz max 600hz
Speed : 18000rpm
Cooling Type : Water-cooled
Joint of nose : BT30 Taper 45o , petal
Lubrication : Grease
weigth: 26kg
Diameter: 125mm
Lengt: 460mm
Air pressure: 6kg/cm2