Portescap 16N78-135.1001 is a brushless dc stepper motor with a holding torque of over 500 oz-in. It has a length of 3.93 inches, a diameter of 1.78 inches, and a winding type of 12V/24V. The motor is protected by an IP20 environmental protection and is suitable for industrial applications. It is available with a range of shaft options, including double flat shaft and single flat shaft. The motor is NEMA 17 compatible and can be used in a variety of applications, including 3D printing, machine tools, medical equipment, pumps, and robotics.