Product Short Description
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Product Name: AKM21C-ANBNR-00 Brushless Servo Motor
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Product Introduction: This is a compact brushless permanent magnet AC servo motor from the Kollmorgen AKM series, featuring an integrated 24 VDC holding brake and a 16-bit resolver feedback. It is designed for precision positioning axes where compact size and high-speed capability are critical.
Description
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Technical Specifications:
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Motor Type: Brushless permanent magnet synchronous servo (3-phase)
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Frame Size: 58 mm × 58 mm (IEC 58 mm square flange, NEMA 23 equivalent)
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Rated Output: 0.32 kW (0.43 HP) at 320 VDC bus
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Rated Speed: 8000 RPM (max mechanical speed)
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Stall Torque: 0.48 Nm continuous (at 100 °C winding ΔT)
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Rated Torque: 0.39 Nm at rated speed
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Peak Torque: 1.47 Nm (short-term overload)
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Rated Current: 1.58 Arms continuous at stall
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Peak Current: 4.65 Arms
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Max Bus Voltage: 320 VDC
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Feedback Device: Resolver (16-bit resolution, 2-pole)
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Holding Brake: Spring-applied, electrically released disc brake, ~1.0–1.2 Nm torque, 24 VDC operation
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Protection Class: IP65
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Insulation Class: F (155 °C)
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Operating Temperature: 0 °C to +40 °C (ambient, derate above 40 °C)
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Storage Temperature: -20 °C to +70 °C
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Weight: Approx. 1.5–2.0 kg (with brake)
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Structural Features: Compact 58 mm frame with integrated brake and resolver. Available with 9 mm or 11 mm keyed shaft. Connectors: 2 × angled rotatable M23 connectors.
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Application Scenarios: Precision positioning axes in packaging, semiconductor handling, and light automation.
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Compatible Drives: Kollmorgen AKD series, Servostar CD, third-party 320 VDC-class servo amplifiers.
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Installation Requirements: IEC 58 mm square flange mounting. Shaft load limits: 50–70 N radial (max at shaft end), 30–40 N axial. Withstands 1000 m altitude without restriction; derating required above 1000 m.
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Usage Notes: Derate performance above 40 °C ambient temperature. Ensure the 24 VDC brake power supply is adequately sized for inrush current (2–3 A) during brake release.





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