Description: DC 48V 500W Brushless Spindle Motor Driver Speed Controller For CNC Engraving Machine.    It is a high performance,cost-effective 3 phase BLDC motor controller.  Voltage range is from 20V DC to 50V DC.  The controller can drive the DLDC motor with HALL or without HALL.    Specification: Motor Material:Metal;  Brushless motor parameters: Working voltage:48 V DC;  Power:500 W;  Speed:12000 r/min;  Torque:0.45 (N.m);  Insulation resistance:> 2 ohms;  Insulation dielectric strength:400 V;  Diameter:55 mm;  Distance:0.6 (N.m);  Insulation resistance:> 2 ohms;   Insulation dielectric strength:400 V;  Diameter:55 mm;  The spindle radial runout about:0.01 to 0.03;  Spindle net weight:about 1.4KG;  Application:Can be used for metal or non-metal materials such as carving. The spindle with forced air cooling, can work long hours.    Brushless DC speed driver controller parameters: Rated voltage:20-50V DC;  Rated current:8A;  Limited current:10A;  Maximum speed:Over 20000RPM;  Speed control:1.Regulation resistance;  2.External voltage:10VDC;  Alarm output:AL signal:This port and the ground have a 5V alarm output output;  Power light:Green LED(The led is on once power on);  Operation condition light:Red LED(The led flash one times continuas When the device is suspended);  Insulation resistance:>100MΩ at normal temperature and pressure;  Insulation strength:0.5KV, 1 minute at normal temperature and pressure;  Storage temperature:-20℃ ~ +65℃;  Storage humidity:0~95%RH;  Working temperature:0-45℃;  Working humidity:< 80%,No frost, frost free;  Working Vibrating:5.9m/S² MAX;  Dimension:96x57x36mm.    Main Features: Brushless motor: 1. brushless, low interference, in addition to the brushless motor brush, the most immediate change is no brush spark generated when the motor running, thus greatly reduce the electric spark interference of remote radio equipment.  2. low noise, smooth operation, brushless motor without brush, less friction force during operation, smooth operation, low noise will be many.  3. long life and low maintenance costs, less brush, brushless motor wear is mainly on the bearing, from the mechanical point of view, brushless motor is almost a free maintenance of the motor.    Speed driver controller: 1. Speed/Current alike close loop technology, smooth rotation.  2. Pure hardware design, high-speed, high noise immunity.  3. F/R(forward / reverse control) Rotation, soft shift function.  4. Over current, short circuit protection (red LED indicator).    Package Included: 1 x Engraving machine principal axis.  1 x Stationary fixture.  1 x Drive Controller.  2 x line(as picture).    Notice: 1. Please allow a bit error due to manual measurement. Please make sure you do not mind before you bid.  2. The color may have different as the difference display, pls understand.  3. There are no instructions included in this kit. Professional Installation Is Highly Recommended