Specification Brand : RATTMMOTOR BulletPoint1 : 【Air Cooled Spindle】Power: 300W; Voltage: 12-48VDC; Idling Speed: 3000-12000r/min ( 12V-3000RPM, 24V-6000RPM, 36V-9000RPM, 48V-12000RPM ); Torque:400mN.m; Diameter: 52mm. Run outoff: 0.01-0.04mm. BulletPoint2 : 【Speed Controller】Input Voltage: AC100-AC220V±10% Global voltage 50/60Hz; Current Limit: 6A; Wiring: Terminal type (Convenient and fast); Support Mach3 Fuction. BulletPoint3 : 【Advantages】This power regulator can adjust 110 or 220v according to customers' needs. Adopt pulse width technology to make the speed more stable, and the speed is high under low speed. BulletPoint4 : 【Features】With overcurrent protection cut-off device to make performance more reliable; With a soft start device to eliminate motor starting current is too large. BulletPoint5 : 【Note】This motor has quiet operation, small volume and high speed, and the rear end of the motor is reinforced with a cooling fan, which can be safely worked for a long time! BulletPoint6 : 【AFTER SALES SERVICE】 If you get stuck, Contact us with any questions that arise. Our customer service team is always ready to assist with any questions you may have. ExternallyAssignedProductIdentifier1 : 0754193193147 ExternallyAssignedProductIdentifier2 : 754193193147 IncludedComponents1 : 300W Spindle motor*1 IncludedComponents2 : Speed controller*1 IncludedComponents3 : 52mm Spindle mount*1 ItemName : RATTMMOTOR CNC Spindle Motor Kit, 300W ER11 Air Cooled Spindle Motor 52mm 12-48V DC 12000RPM+Spindle Speed Power Converter AC110V/220V with Mach3 Fuction+52mm Spindle Mount for CNC Router ItemPackageDimensions_Height : 16 centimeters ItemPackageDimensions_Length : 23 centimeters ItemPackageDimensions_Width : 13 centimeters ItemTypeKeyword : power-milling-machines Manufacturer : RTM ModelName : RTM-300W-KIT ModelNumber : ER11 NumberOfBoxes : 1 PartNumber : US-GRBL+MK PowerSourceType : ac_dc ProductDescription : Package Include: 1 × 300W 12-48VDC Air-Cooled Spindle Motor 1 × 110V or 220V Speed Controller Governor with Power Supply 1 × 52mm Spindle Motor Mount ProductSiteLaunchDate : 2023-10-23T09:18:02.355Z SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 Voltage : 48 volts_of_direct_current Wattage : 300 watts