Description:300W Air-cooled Motorized Spindle Motor with Clamp and Power Supply Speed Governor<br>Specification:<br>Motorized Spindle Motor:<br>          Working voltage       12V-50V DC           Power        300W           Speed       3000-12000 r\/min            Torque       600mN.m           Insulation Resistance       &amp;gt; 2 M&amp;Omega;           Insulation Dielectric Strength       400V           Diameter       54mm           Chuck       ER11           Length of the Chuck       Rod 45mm， (with nuts and chuck 50mm)           Diameter of Chuck        16mm           Length of Motor       178mm (including clamping part and motor)           Weight of Spindle motor       0.9kg   <br>Power Supply Speed Governor:<br>          Input Voltage        110V-220V AC           Output Voltage       48V           Current        4A           Adapted Motor Power       50-500W           Size       130x95x38mm           Mode of Connection       Standard terminal interface           Configuration       With switch， potentiometer   <br>Feature:<br> The spindle radial runout is about 0.01-0.03 mm.<br> The motor adopts clamp regular holder structure. It can be used as carving  for metal or non-metal materials.<br> The spindle with forced air cooling， can work long hours.  Package Included: 1x Motorized Spindle Motor 1x Clamp 1x Power Supply Speed Governor 1x  ER11 Collet  4x Screws  More Details: