Description
Product Introduction
The Kollmorgen AKM54K-ANC2AA00 is a large-frame AKM-series brushless synchronous servo motor intended for demanding packaging, converting, material-handling, and industrial automation axes. It combines a 108 mm IEC square flange, K winding, and 640 VDC-class operation with resolver feedback for closed-loop torque, speed, and position control.
This is not a small auxiliary-axis motor. With approximately 14.4 Nm stall torque and a 4000 rpm rating, it is aimed at higher-load axes where a compact AKM2 or AKM4 frame would run out of torque or thermal margin. One thing to watch out for: third-party listings disagree on some secondary details, so the motor nameplate and OEM drawing remain the final authority.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Kollmorgen / Danaher Motion |
| Series | AKM Synchronous Servo Motors |
| Motor type | Three-phase brushless permanent-magnet synchronous servo motor |
| Frame / flange | 108 mm IEC square flange; approximately NEMA 42 equivalent |
| Winding | K winding, optimized for 640 VDC bus operation |
| Feedback | 16-bit, 2-pin resolver |
| Rated power | 3.87 kW / 5.19 hp at 640 VDC bus |
| Stall torque | 14.4 Nm / 127 lb-in continuous |
| Nominal torque | 9.25 Nm / 82 lb-in |
| Rated speed | 4000 rpm |
| Maximum mechanical speed | 6000 rpm |
| Maximum DC bus voltage | 640 VDC |
| Shaft | Keyed shaft configuration, per model suffix interpretation; verify OEM drawing |
| Brake | Not indicated by the 00 suffix; confirm OEM documentation before assuming brake availability |
| Protection | IP54 to IP65, depending on source and configuration; verify nameplate |
| Insulation class | Class F |
| Compatible drives | Kollmorgen AKD 640 V-class, S700 series, or equivalent 640 VDC-class servo amplifiers |
Application Scenarios & The “Trench” Experience
A converting line’s main pull-roll axis begins losing torque during long production runs. The drive does not trip immediately, but the web tension drifts and the operator compensates manually. Eventually the axis faults on overload. On a 108 mm AKM motor, that pattern often points to degraded winding insulation, a failing resolver connection, or a mechanical load that has quietly increased—not simply an amplifier tuning issue.
- Packaging machinery – Main transport, rotary-table, and high-load indexing axes – Required for its 14.4 Nm stall torque and 4000 rpm capability.
- Converting and printing – Pull rolls, tension zones, and register-control axes – Required for sustained torque under continuous duty and precise speed regulation.
- Material handling – Heavy conveyor, lifting, and transfer axes – Required for high torque in a standardized 108 mm IEC mounting envelope.
- Industrial robotics – Large joint, gantry, or transfer-unit axes – Required for resolver-based closed-loop commutation and 640 VDC drive integration.
- Legacy machine repair – Direct replacement of a failed AKM54K-ANC2AA00 – Required because winding, feedback, shaft, connector, and voltage class are all suffix-specific.
Field case study: A palletizing conveyor’s main drive axis began overheating after a gearbox replacement. The maintenance team increased the drive’s torque limit; the motor then tripped on overload. Inspection showed the replacement gearbox ratio was wrong, forcing the AKM54K to operate outside its torque envelope. After correcting the ratio and reinstalling the original motor, the axis ran within specification. The lesson: before replacing a large servo motor, verify the mechanical load path and gearbox ratio.
AKM54K-ANC2AA00
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; we test them on compatible Kollmorgen servo hardware where available.
- Inbound inspection: Verify model marking, flange condition, shaft and keyway condition, connector threads, cable integrity, and signs of impact, moisture, or prior repair.
- Anti-counterfeit check: Compare nameplate format, housing construction, magnet/rotor behavior, and connector hardware against known Kollmorgen AKM examples.
- Live rig testing: Connect to a compatible 640 VDC-class Kollmorgen servo amplifier, verify resolver recognition, commutation, and stable closed-loop torque/speed operation.
- Electrical checks: Measure winding resistance, phase balance, and insulation resistance; inspect for shorted turns, grounded windings, or thermal damage.
- Feedback verification: Rotate the shaft through a full revolution and confirm stable resolver signal and correct commutation alignment.
- Mechanical checks: Check bearing noise, shaft runout, axial play, keyway condition, and abnormal drag.
- Final QC and packaging: Record test data, protect the shaft and connectors, and ship in anti-static, impact-resistant packaging.
The Veteran’s Tech Trap Guide
- ⚠️ Do not assume every AKM54K is interchangeable. The suffix
ANC2AA00defines winding, feedback, shaft, connector, and brake configuration. A visually similar AKM54K can have a different feedback device or voltage class. - ❗ Verify the 640 VDC bus class. This motor is specified for 640 VDC bus operation. Connecting it to a 320 VDC-class drive without confirming compatibility can leave you short on voltage headroom at speed.
- ⚠️ Check the resolver pigtail before replacing the motor. On a high-duty axis, heat and vibration commonly damage the feedback connector or cable shield first.
- ❗ Do not connect it directly to mains. It requires electronic commutation from a compatible servo amplifier. Direct line power will damage the motor and create a serious safety hazard.
- ⚠️ Confirm brake requirements separately. The
00suffix generally indicates no brake, but verify the OEM drawing and machine safety assessment before using it on a vertical or gravity-loaded axis.
Frequently Asked Questions
Q: Is the AKM54K-ANC2AA00 hot-swappable?
A: No. Remove drive power, allow the servo-drive DC bus to discharge, lock out the machine, and verify zero voltage before disconnecting motor or feedback connectors.
Q: What feedback does it use?
A: A 16-bit, 2-pin resolver. Do not substitute an SFD, encoder, or HIPERFACE feedback variant without confirming drive and mechanical compatibility.
Q: Can I use it with an AKD drive?
A: Yes, but only with a 640 VDC-class AKD or equivalent amplifier that supports resolver feedback and the motor’s continuous and peak current requirements.
Q: Does it include a brake?
A: The available information does not confirm an integrated brake for this exact suffix. Treat it as a non-brake motor unless the OEM drawing or motor nameplate proves otherwise.
Q: Is it compatible with AKM54K-ANC2R-00?
A: Not as a direct replacement. The R variant is identified as a resolver-with-brake configuration, while the AA00 suffix indicates a different connector/brake configuration. Verify the complete suffix before ordering.
Q: Why is surplus stock cheaper than a new OEM motor?
A: Surplus suppliers source discontinued inventory, excess project stock, and decommissioned machines. The lower price reflects variable availability and cosmetic condition, not necessarily lower electrical quality—provided the unit has passed winding, insulation, resolver, and live commutation testing.
Q: What warranty is reasonable?
A: For a tested refurbished or surplus unit, 12 months is a reasonable baseline. Confirm whether coverage includes functional failure, replacement, repair labor, and exclusions for incorrect drive configuration or mechanical overload.
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