Description
Kollmorgen AKM21C-ANBNR-00 | Quantified Spec 0.58kW Compact Motor
Dynamic Product Introduction
Stepping up mechanical frame sizes without inflating cabinet or machine footprints presents a distinct design challenge. The Kollmorgen AKM21C-ANBNR-00 packs increased thermal mass and higher torque output into a compact 58mm flange envelope, making it a favorite for demanding packaging and robotics applications. When replacing legacy actuators, verifying the exact winding code and feedback variation prevents costly drive-matching errors on the shop floor.
AKM21C-ANBNR-00
Key Technical Specifications
| Technical Parameter | Specification Value |
| Flange Size | 58 mm (Frame 2) |
| Stack Length | 1 (Short core length) |
| Winding Type | C (Standard high-speed winding variant) |
| Feedback Device | SFD (Smart Feedback Device, digital single-cable protocol) |
| Electrical Interface | Rotatable Intercontec speed-tec connectors |
| Holding Brake | None (-N suffix) |
| Thermal Protection | Integrated PTC thermistor |
| Enclosure Rating | IP40 (Standard indoor industrial cabinet use) |
| Shaft Design | Smooth shaft without keyway |
| Insulation Class | Class F per IEC 60034-1 |
Global Sourcing & Live-Test SOP (Transparency Core)
Procuring secondary or surplus servo actuators requires strict verification of magnetic flux and bearing concentricity. Every AKM21C-ANBNR-00 unit goes through a comprehensive inspection pipeline:
- Inbound Verification: Serial number tracing against OEM production records, anti-counterfeit holographic check, and laser-etched nameplate validation.
- Live Simulation: Mounted on a dynamic dynamometer load bench paired with a compatible digital drive amplifier.
- Diagnostics: 1000VDC megger isolation test, phase-to-phase back-EMF voltage symmetry checks, and 24-hour heat run to ensure thermal stability under load.
- Final Prep: Protective shaft cap installation, moisture-barrier wrapping, and heavy-duty ESD-safe vacuum sealing.
The Field Engineer’s Pitfall Guide
- ❗ Feedback Signal Degradation: Routing the SFD single-cable hybrid line through dense high-voltage cable trays without shielding separation will induce noise, causing random drive communication dropouts.
- ❗ Shaft Coupling Misalignment: Forcing a rigid coupling onto the smooth 58mm frame shaft without precise laser alignment will side-load the front bearing, inducing early mechanical wear and audible whining.
- ❗ Thermal Overload in Static Holds: Neglecting to account for the lack of a holding brake on vertical axes will let payloads slip, while continuous stall-torque operation without adequate heatsink mounting will trip the internal PTC.
Intent-Driven FAQ
- Does the AKM21C-ANBNR-00 require an internal battery for positioning?
No. The Smart Feedback Device (SFD) transmits absolute position data digitally over two wires without relying on an onboard backup battery.
- Can this motor handle washdown environments out of the box?
No. The -40 rating indicates standard IP40 protection; operating this motor in wet or high-moisture washdown zones requires an external protective shroud or an upgraded IP67 variant.
- What indicates a failing stator winding during maintenance checks?
Using a low-resistance digital multimeter to find a phase-to-phase resistance imbalance greater than three percent strongly points toward an internal short or degraded winding insulation.
- Are mating power and feedback connectors included with surplus units?
Surplus motors generally ship with integrated housing receptacles only; matching cable assemblies must be selected and ordered based on your specific cabinet distance.
- What type of warranty covers this surplus hardware?
Verified units are backed by an industry-standard replacement warranty covering electrical and mechanical functionality under rated operational limits.
