Autonics A1K-S543-B 5-Phase Built-in Brake Stepper Motor

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If this item is out of stock, the lead time may take up to 2 weeks. We will contact you individually with a status update after your order is placed.

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The Autonics A1K-S543-B is a compact 5-phase stepper motor featuring a built-in electromagnetic brake. Designed with a 42mm frame size, it delivers a maximum stop torque of 1.3 kgf·cm (0.13 N·m), making it the most compact option in the brake-equipped series. This "S" type model operates at a rated current of 0.75 A/Phase, ensuring energy-efficient performance. The integrated B-type brake provides reliable position holding during power outages (Power OFF = Lock), making it essential for small-scale vertical drive systems and safety-critical applications where space is extremely limited.

Key Features

• Compact Torque Output: Delivers a maximum stop torque of 1.3 kgf·cm (0.13 N·m), providing precise holding force in a small 42mm footprint.

• Built-in Safety Brake: Equipped with a normally closed electromagnetic brake that locks the shaft when power is turned off, preventing load drops.

• 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.

Technical Specifications

• Model: A1K-S543-B

• Frame Size: 42 mm

• Shaft Type: Single Shaft (Built-in Brake)

• Max. Stop Torque: 1.3 kgf·cm (0.13 N·m)

• Rated Current: 0.75 A/Phase (S Type)

• Brake Power: 24 VDC (Non-polar)

• Brake Static Friction Torque: ≥ 1.8 kgf·cm (0.18 N·m)

• Rotor Inertia: 35 x 10⁻⁷ kg·m²

• Basic Step Angle: 0.72° / 0.36°

• Unit Weight: Approx. 0.40 kg

<Motor Specification>