Product Name: NEMA23 2.7nm DC Motor, Brake Motor, Gearmotor, Stepper Motor for Tapping Machine Model NO.: 57BYGH2100-4004A Brand: Siheng Certification: ISO9001, Ce Type: Linear Number of Poles: 4 Function: Driving Excitation Mode: HB-Hybrid Number of Stator: Two-Phase Speed: Variable Speed Application: Printing Equipment Step Angle: 1.8 Degree frame Size: 57mm*100mm Torque: 2.7nm Current: 2A Trademark: Siheng Transport Package: Carton with Inner Foam Box; Pallet Origin: Shanghai, China HS Code: 850131000 Product Description 1.8 Degree 57mm Low price Stepper Motor,brake Motor with high TorqueApplicationTextile machinery, engraving machineSecurity, 4g antenna, solar energyMedical equipment, industrial automationAutomobile, office automationPrinting equipment, advertising equipment etc.Technical ParametersStep Angle Accuracy±5%Resistance Accuracy±10%Inductance Accuracy±20%Temperature Rise80ºCMax.Ambient Temperature-10ºC-+50ºCInsulation Resistance100MΩMin.500 VDCDielectric Strength500VACShaft Radial Play0.06Max.(450 g-load)Shaft Axial Play0.08Max.(450 g-load)Insulation ClassClass B130°Technical SpecificationsModel NoHolding TorqueCurrent/PhaseResistance/PhaseStep AngleRotor InertiaWeightLengthNmAΩ°gfcm²kgmm57BYGH246-1004A0.6514.81.8 °1200.54657BYGH246-2004A0.6521.31.8 °1200.54657BYGH246-3004A0.6530.581.8 °1200.54657BYGH255-1004A1161.8 °2000.75557BYGH255-2004A121.61.8 °2000.75557BYGH255-3004A130.71.8 °2000.75557BYGH262-1004A1.216.51.8 °3000.856257BYGH262-2004A1.221.81.8 °3000.856257BYGH262-3004A1.230.81.8 °3000.856257BYGH280-2004A222.51.8 °4801.158057BYGH280-3004A2311.8 °4801.158057BYGH280-4004A240.651.8 °4801.158057BYGH2100-4004A2.74.01.21.8 °5501.6510057BYGH2115-4004A3.24.01.51.8 °6001.75115DimensionWiringFAQ1.How can we know the product quality?A1: We suggest you to order a sample. Also, you can send us email for detail photos for checking if you cannot get enough information in the product page.2. How can we get your catalog?A2: Please go to below website link to download it .-http://www.sihengmotor.com/download.php3. Can we have free sample?A3: Yes sure, but please pay the shipping cost by youself.4. Is this your final price? May i have the discount?A4: Our price is the factory price, and if your quantity is larger, we will allow the discount for you.5.Is there cheap shipping cost to import to our country?A5: Yes, we have our regular shipping company, they have very good price.6. Can we visit your factory?A6: Yes welcome warmly. Our address is Floor 3,B building,No 388,Songhuang Road, Qingpu District, Shanghai City, China.7.What is the Warranty for your products?A7:One year warranty for all electronic products. If any quality problems on our side occured in this period, we will take on the shipping cost and replacement.