Nema 8 Stepper Motor Unipolar L=30mm w/ Gear Ratio 90:1 Planetary Gearbox

This unipolar Nema 8 stepper motor with 30mm body and 0.5A rated current, integrated a planetary gearbox of 90.25:1 gear ratio. It's a good solution to applications that with limited space but need low speed and/or high torque.

Electrical Specification

• Manufacturer Part Number: 8HS12-0506S-PG90
• Motor Type: Unipolar Stepper
• Step Angle: 0.02deg
• Holding Torque without Gearbox: 2Ncm(2.83oz.in)
• Rated Current/phase: 0.5A
• Phase Resistance: 13.5ohms
• Inductance: 2.5mH ± 20%(1KHz)
• Insulation Class: B 130°C[266°F]

Gearbox Specifications

• Gearbox Type: Planetary
• Gear Ratio: 90.25:1
• Efficiency: 70%
• Backlash at No-load: <=3deg
• Max.Permissible Torque: 0.5Nm(70.8oz.in)
• Moment Permissible Torque: 1Nm(141.6oz.in)
• Shaft Maximum Axial Load: 5N
• Shaft Maximum Radial Load: 25N

Physical Specifications

• Frame Size: 20 x 20mm
• Motor Length: 30mm
• Gearbox Length: 31.2mm
• Shaft Diameter: Φ6mm
• Shaft Length: 15mm
• D-cut Length: 9mm
• Number of Leads: 6
• Lead Length: 300mm
• Weight: 92g

Connection