Specification Brand : STEPPERONLINE BulletPoint : Higher precision, higher torque, less motor heat, lower power consumption BulletPoint1 : Package Dimensions: 2.54 cms (L) x 2.794 cms (W) x 4.064 cms (H) BulletPoint2 : Product Type: Electronic Component BulletPoint3 : Package Quantity: 1 BulletPoint4 : Country Of Origin: Taiwan ExternallyAssignedProductIdentifier : 5202036997193 ItemName : STEPPERONLINE Nema 17 Closed Loop Stepper Motor 52Ncm/73.64oz.in with Encoder 1000PPR(4000CPR) ItemPackageDimensions_Height : 9.4 centimeters ItemPackageDimensions_Length : 1.9 centimeters ItemPackageDimensions_Width : 7.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-motors Manufacturer : STEPPERONLINE Material : Copper ModelName : nema ModelNumber : 25BY4801 NumberOfItems : 1 PartNumber : 17HS19-2004D-E1K ProductDescription : This is a Nema 17 closed-loop stepper motor with a 1000ppr(4000cpr) incremental optical encoder, a rated current of 2.0A, and a holding torque of 52Ncm(73.64oz.in). Compared with open-loop stepper motors, it has higher precision, higher torque, less motor heat, lower power consumption, and better response to external factors.