The PHB130K Series NEMA 51 2-phase round stepper motors offer 1.8° step angle with ±5% full-step accuracy, high torque, and high inertia for heavy-duty applications. Optional brake and AC voltage operation available. Shaft radial/axial play ≤0.02/0.08 mm, temperature rise max 80°C, insulation ≥100 MΩ, dielectric strength 1800 VAC/1 min. Available in lengths from 199 mm to 282 mm, these motors deliver precise, smooth motion and reliable performance for CNC machines, engraving equipment, industrial automation, and industrial equipment demanding strong torque and low vibration.