The 57mm Nema 23 Stepper Motor Permanent Magnet Brake is engineered for precision and reliability in demanding applications. Designed specifically for Nema 23 stepper motors with a 57x57mm frame, this square DC electromagnetic brake delivers a static holding torque of 1.5Nm, keeping your axis firmly in place whenever power is cut. Compatible with both 12V and 24V DC systems, it offers flexible integration into a wide range of CNC machines, automation equipment, 3D printers, and industrial robotics. The brake operates on a power off lock, power on release principle, providing an essential safety mechanism that prevents gravity loaded axes from dropping unexpectedly. The rugged metal shell features a rust resistant chrome plated finish, while the interior houses permanent magnets and heat resistant coils for long lasting performance. The 8mm D shaft hole (8x7.5mm standard cut) ensures a secure, slip free fit on your motor's output shaft. Installation is straightforward: slide the D shaft hole onto the motor shaft, and secure the square flange using the four corner mounting holes. Compact at 30mm in height, this brake is a dependable solution for any motion control setup requiring precise positional holding.