Specification Brand : INTBUYING BulletPoint1 : Great Performance: The spindle motor comes with a high precision ER20 nut that is standard with a 6 mm collet and can clamp within the range of 1-13 mm. It also includes a high quality dust-proof aviation plug line with scientific design and simple wiring for easy connection and reduced chances of loosening off BulletPoint2 : Air Cooling: It features fan cooling mode,which is simpler and more convenient than water cooling.This allows for quick heat dissipation and extends the service life of the motor BulletPoint3 : High Efficiency: With a speed range of 1-18000 rpm,this CNC router grinding spindle motor offers improved efficiency and service life,especially at high speeds BulletPoint4 : High Quality: The motor uses a manganese steel nut that is hardened with high precision, making it less prone to breaking the knife during use BulletPoint5 : Quiet Operation: The spindle motor is equipped with a dynamic balance technology that effectively reduces noise during use, providing a quieter operation Color : silver ExternallyAssignedProductIdentifier : 7325691003257 ExternallyAssignedProductIdentifier1 : 760714823110 ExternallyAssignedProductIdentifier2 : 0760714823110 FinishType : Finish Horsepower : 4.7 horsepower IncludedComponents : Pneumatic cooling spray*2, Solenoid valve*1, Air filter*1 ItemName : INTBUYING Spindle Motor 3.5KW/5HP Square Spindle Motor ER20 Grinding Spindle Power Air Cooled Shaft with 6mm Collet Air Cooling 18000RPM for CNC Router Engraving Milling Machine Include Inverter 220V ItemPackageDimensions_Height : 8.66 inches ItemPackageDimensions_Length : 17.32 inches ItemPackageDimensions_Width : 7.87 inches ItemPackageQuantity : 1 ItemTypeKeyword : power-milling-machines Manufacturer : INTBUYING Material : Pure Aluminium ModelName : Coolant Cooling Spray Pump Kit ModelNumber : Coolant Cooling Spray Pump Kit NumberOfItems : 1 PartNumber : T053289 PowerSourceType : hand_powered ProductDescription : Items Description: Power: 3500 W Current:15.9A Voltage: 220 V Cooling mode: fan cooling Lubrication mode: grease lubrication Chuck nut: ER20(clamping 3-20mm) Service frequency: 300HZ Motor speed: 1800rpm Cone hole beat: 2UM Bearing model: 2*7008DB P4 2 * 7004 dt P4 Speed mode: through the inverter to adjust the output voltage and frequency can be achieved 0-18000 stepless Wiring mode: connect line 123 to frequency converter U, V, W, and line 45 for thermal protection, You can do without 6 bit ground, please correctly connect or not connect. Item included: 1set of Spindle Motor 3.5KW ProductSiteLaunchDate : 2020-05-29T08:46:02.226Z RegulatoryComplianceCertification : NSDOS.0384EM-005 Size : 85mm Speed : 18000 rpm Style : Spindle Motor SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 26101200 Voltage : 220 volts Wattage : 3500 watts