Model: 17HS8401B; Phase: 2 Phase; Type: Hybrid; Step Angle: 1.8degree; Current: 1.8A; Holding torque: 78oz-in 52N.cm; 4 Lead Wires; Motor Size: 42x42x48 mm 1.65"x1.65"x1.89"; Weight: 0.9 LB Advanced Manufacturing Technology: Advanced winding technology is used, and the copper wire is evenly arranged, which is not easily deformed during long-term operation Materials: The motor coil is made of pure copper coil, with low heat generation and extended service life. The rotor surface is coated with imported epoxy resin adhesive, making the motor magnetic field more stable,and prevent shaft jamming during operation.The body shell adopts a high hardness motor steel shell, which is sturdy and durable, with frosted metal side walls to increase friction Shaft not not same on both sides: Motor front shaft is 5mm diameter shaft and 24mm lenth; Motor back shaft is 5mm diameter and 10mm length Applications: Semiconductor Equipment, Milling Machine, Engraver Machine , CNC Routers ,