Digital guide
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Kollmorgen AKM52H-ANCSEJ0
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Product Name: AKM52H AC Synchronous Brushless Servo Motor with 24 VDC Holding Brake & Digital Encoder
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Product Introduction: Mid-frame AKM5 (108 mm flange) servo motor with medium-inertia rotor, optimized for 640 VDC bus, equipped with high-resolution feedback (typically SFD or EnDat — “NCSEJ” variant indicates encoder + brake + keyed shaft + connectors). Suited for indexing tables, CNC axes, and converting equipment.
Detailed content
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Key Specifications:
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Frame Size: AKM5 — 108 × 108 mm flange (IEC B5)
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Stack Length: Index 2 (medium torque)
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Continuous Stall Torque (Tc): ~8.48 Nm @ 100 °C rise
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Peak Torque (Tp): ~21.6 Nm
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Rated Speed: 4000 rpm; max 6000 rpm
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Rated Power: ~2.42 kW @ 640 VDC bus
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Rated Current: ~5.9 Arms (continuous stall)
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Torque Constant (Kt): ~1.44 Nm/Arms
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Back EMF Constant (Ke): ~55–60 Vrms/krpm (typical for H winding)
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Holding Brake: 24 VDC spring-applied fail-safe brake (option “J” = brake present)
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Feedback: Smart Feedback Device (SFD) or Incremental/EnDat encoder (“NCS” = SFD/encoder feedback)
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Shaft: Keyway shaft (std for this option)
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Connector: Dual M23 rotatable SpeedTec connectors (power + feedback separate)
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Ingress Protection: IP65 (stator), IP64 (shaft seal)
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Insulation Class: F (155 °C)
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Construction & Materials: Rare-earth magnet rotor, low-cogging 10-pole design; anodized aluminum housing; keyed stainless steel shaft; integral electromagnetic spring-set brake.
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Installation & Notes:
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Brake must be powered (24 VDC) to release — motor will not turn with brake engaged.
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Use Kollmorgen-approved motor/drive cable sets for correct pinout.
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Periodically check brake air gap if used in frequent stop/hold cycles.
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