... 3. 5.5KW WATER cooling spindle. heavy duty high Z axis stone cnc router WK1218sThis series of models mainly used ... ,marble, granite, white marble, sandstone,such as a stone sculpture processing, category carved glass-cutting and engraving melting material ... constant torque spindle with the imported with the imported bearing, high power, low tone4.Adopt Taiwan transducer with stable output signals5. ...