103H7522-70B1
The 103H7522-70B1 from Sanyo Denki has a step angle of 1.8 degrees per step and a current rating of 0.5A to 1.0A per phase. Part of the StepSyn Stepping Motors series, it offers a holding torque of 1.0 to 5.0 kg-cm and meets NEMA 17 standards.
It endures rigorous testing with vibration acceleration of 147 m/s2 and amplitude of 1.52 mm in moderate frequency ranges. The motor is rated for durability with thermal isolation class B and insulation over 100 MOhm.