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The Autonics A2K-S544 is a compact 5-phase stepper motor designed for space-constrained industrial applications. Featuring a 42mm frame size, it delivers a reliable maximum stop torque of 1.8 kgf·cm (0.18 N·m). This "S" type model operates at a rated current of 0.75 A/Phase, making it an energy-efficient choice ideal for compact equipment where minimizing heat generation is critical. The standard Single Shaft configuration allows for a minimized installation depth, making it perfect for systems requiring precise motion control in a small form factor without the need for rear shaft accessories.
Compact Torque Output: Delivers a maximum stop torque of 1.8 kgf·cm (0.18 N·m), providing reliable force in a small 42mm footprint.
Single Shaft Design: The standard single shaft configuration offers a minimized installation footprint compared to dual-shaft models.
Rated Current 0.75 A/Phase: Designed for 0.75 A/Phase operation ("S" Type), compatible with standard drivers for 42mm motors.
Standard 42mm Frame: The 42mm square flange is compatible with NEMA 17 mounting standards, suitable for compact machinery.
Precision 5-Phase Control: Supports a basic step angle of 0.72° (Full step) and 0.36° (Half step) for smooth and accurate positioning.
Model: A2K-S544
Frame Size: 42 mm
Shaft Type: Single Shaft
Max. Stop Torque: 1.8 kgf·cm (0.18 N·m)
Rated Current: 0.75 A/Phase (S Type)
Rotor Inertia: 54 x 10⁻⁷ kg·m²
Basic Step Angle: 0.72° / 0.36°
Unit Weight: Approx. 0.30 kg





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