KOLLMORGEN AKM52K-ACCNR – High‑performance AKM synchronous servo motor for precise motion control

The KOLLMORGEN AKM52K-ACCNR is part of the proven AKM servo motor family, designed for demanding positioning and velocity control in packaging, machine tools, electronics assembly, and general automation. From my experience, the AKM5 frame typically lands in that sweet spot where you need solid continuous torque with fast dynamics, yet still want a compact footprint. The “52K” indicates frame size 5 with a length/stack 2 winding variant, and the “ACCNR” option set commonly corresponds to a standard IEC flange/shaft, a Kollmorgen-compatible feedback option, no holding brake, and a radial/rotatable connector orientation — a very practical, easy‑to‑wire combination for AKD drive platforms.

You might notice that AKM motors typically deliver smooth torque, low cogging, and wide speed ranges (often up to 6,000 rpm depending on winding). In many cases, the AKM52K lands around the 3–6 N·m continuous torque class with substantially higher peak torque for fast indexing. If you’re upgrading an older axis, matching this motor with an AKD drive plus an SFD/resolver feedback loop keeps commissioning straightforward and quick.

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Key Features

• AKM dynamic core – Low inertia rotor and high copper fill for rapid acceleration and tight control loops.
• Frame size 5, length 2 – A compact build that typically covers mid‑range torque without a bulky cabinet layout.
• ACCNR configuration – Standard metric flange/shaft, Kollmorgen-compatible feedback, no brake, radial connector orientation for tidy routing.
• Drive pairing made easy – Optimized to run with KOLLMORGEN AKD servo drives; cabling sets and feedback pinouts are well-documented.
• Industrial durability – Rugged mechanical design with sealed connectors; ingress protection up to IP65 is common on AKM builds with appropriate sealing.
• Thermal protection – Integrated PTC/KTY thermal sensor in most AKM variants to protect windings during overload conditions.
• Smooth motion – Cogging-minimized design helps with precise low‑speed moves in inspection and dispensing applications.

Technical Specifications

Application Fields

This model suits multi‑axis machines where you want fast response and precise repeatability:

• Packaging: form‑fill‑seal, seal jaws, feeders, turret indexing.
• Electronics & assembly: screwdriving, pick‑and‑place axes, gantries.
• Machine tools & wood/metal processing: auxiliary spindles, tool changers, axes with rapid starts/stops.
• Printing & converting: tension control rollers, registration axes.
• Inspection & dispensing: slow‑speed smooth motion with minimal cogging.

Customer feedback: “Swapped an older motor for AKM52K and shaved ~25% off our cycle time without touching the mechanics. Cabling to the AKD drive was straightforward.”

Advantages & Value

• Reliability – AKM motors are known for long bearing life and consistent thermal behavior, which typically reduces unplanned downtime.
• Compatibility – Native fit with AKD drives and standard feedback options makes retrofits simpler, cutting engineering hours.
• Lower total cost – Efficient windings mean smaller drive sizes in many cases, plus less heat to manage inside cabinets.
• Support & documentation – Well‑documented pinouts, CAD, and drive libraries speed up commissioning and future service.

Installation & Maintenance

• Mounting: Use the metric flange pilot for concentricity. Align couplings to minimize shaft loading; avoid side loads beyond spec.
• Environment: Install in a clean, dry area. Provide ventilation in the enclosure; keep ambient typically within 0…40 °C.
• Wiring: Use Kollmorgen‑approved power and feedback cables. Proper shielding and grounding are essential for EMI control.
• Safety: Lockout/tagout before servicing. Discharge the drive’s DC bus and verify zero energy prior to handling connectors.
• Routine checks: Periodically inspect connectors, seals, and cabling strain relief. Clean dust buildup to maintain heat dissipation.
• Calibration: Run the drive’s autotune for optimal current and velocity loops; update firmware on the AKD drive when recommended.
• Mechanical care: Monitor bearing noise and vibration trends. Replace couplings if backlash or wear increases.

Quality & Certifications

• CE compliant for industrial use (EMC and Low Voltage directives)
• UL Recognized component (region dependent)
• RoHS compliant materials
• Manufactured under ISO 9001 quality systems
• Manufacturer’s warranty typically provided; our warranty: 365 days

One thing I appreciate is how forgiving the AKM52K is during commissioning—if your application is servo‑stiff and you need crisp settling, selecting the right “K” winding with the AKD’s autotune usually gets you there fast. If you’d like, share your target torque, speed, and bus voltage, and I’ll confirm the winding and feedback specifics of this exact ACCNR build against the nameplate.