Nema 11 Stepper Motor

This Nema 11 Stepper Motor (Bipolar L=51mm w/ Gear Ratio 14:1) with 51mm body and 0.67A rated current, integrated a planetary gearbox of 13.73:1 gear ratio. It’s a good solution for applications that with limited space but need low speed and/or high torque.

Electrical Specifications:

• Motor Type: Bipolar Stepper for precise control.
• Step Angle: Fine 0.131 degrees for accurate motion.
• Holding Torque: 12Ncm (16.99oz.in) without a gearbox for stability.
• Rated Current/Phase: 0.67A per phase for efficient performance.
• Phase Resistance: 9.2ohms for effective electrical flow.
• Voltage: Operates at 6.2V for balanced power usage.
• Inductance: 5.7mH with ±20% tolerance at 1KHz for stable electrical behavior.

Gearbox Specifications:

• Gearbox Type: Planetary for torque amplification.
• Gear Ratio: 13.73:1 for increased torque and reduced speed.
• Gear Efficiency: 81% to minimize power loss during transmission.
• Backlash at No-load: Less than or equal to 1 degree for precise gear engagement.
• Max. Permissible Torque: Handles up to 3Nm (425oz.in) for robust power.
• Moment Permissible Torque: Supports momentary loads up to 5Nm (708oz.in).
• Shaft Maximum Axial Load: Supports a maximum axial load of 5N for stability under axial force.
• Shaft Maximum Radial Load: Withstands a maximum radial load of 25N for stability under radial force.

Physical Specifications:

• Frame Size: Compact 30 x 30mm frame.
• Motor Length: 50.5mm, suitable for various applications.
• Gearbox Length: 35mm for a compact overall profile.
• Shaft Diameter: Sturdy Φ6mm shaft.
• Shaft Length: Extends 18mm for flexibility in attachments.
• D-cut Length: Features a 12mm D-cut on the shaft for precise coupling.
• Number of Leads: 4 leads for power and control.
• Lead Length: 500mm for versatile setup options.
• Weight: Total weight is 310g.

Connection: