The PHB42R Series NEMA 17 3-phase stepper motors feature a 3.75° step angle with ±5% full-step accuracy, offering low noise, low inertia, and smooth operation for compact applications. Optional brake, encoder, gearbox available. Shaft radial/axial play ≤0.02/0.08 mm, temperature rise max 80°C, insulation ≥100 MΩ, dielectric strength 500 VAC/1 min. Available in lengths from 40 mm to 48 mm, these motors deliver precise, reliable motion for small CNC machines, office automation, and industrial devices where compact size and efficient performance are essential.