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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification / Value |
| Manufacturer | Kollmorgen |
| Part Number | AKM21C-ANBNR-00 |
| Product Series | AKM Synchronous Servo Motor Series |
| Frame Size | Size 2 (58 mm flange / IEC standard) |
| Rotor Stack Length | Length C (Medium stack length) |
| Winding Type | N-Winding (Standard voltage / speed configuration) |
| Feedback Device | Resolver (Robust feedback for harsh environments) |
| Shaft Type | Smooth shaft without keyway (A-type) |
| Holding Brake | No holding brake (N-type) |
| Connector Type | Right-angle rotatable dual Intercontec connectors |
| Mounting / Flange | IEC standard flange with 0.50 in pilot |
| Protection Rating | IP65 housing protection (with shaft seal) |
| Weight | Approx. 1.1 kg (2.4 lbs) |
Product Introduction & Supply Chain Strategy
The Kollmorgen AKM21C-ANBNR-00 is a high-performance brushless AC servo motor designed for demanding motion control applications such as packaging automation, robotics, semiconductor processing, and CNC machinery. Built with a compact 58 mm frame and featuring resolver feedback, this motor provides exceptionally smooth low-speed performance and high dynamic responsiveness.
Carrying this motor in your inventory as New Surplus provides an unbeatable combination of immediate availability and cost efficiency. Motion axes are vulnerable to mechanical overload, bearing fatigue, or winding burnouts during high-duty cycles. Maintaining an unused, OEM-original AKM21C-ANBNR-00 in safety stock protects your facility against long factory lead times, keeping production lines online and lowering overall Total Cost of Ownership (TCO).
Installation & Configuration Guide
1.Pre-Installation & Mechanical Safety:Disconnect main drive power and verify mechanical alignment.
- Lock out and tag out all electrical power to the servo drive before attempting installation.
- Inspect the machine mounting face and the motor shaft to ensure both are clean, dry, and free of burrs or scoring.
- Ensure the coupling bore matches the smooth shaft diameter of the AKM21C motor exactly to prevent axial or radial misalignment.
2.Mechanical Mounting & Coupling Attachment:
- Align the motor flange with the mounting bracket and hand-tighten the mounting bolts evenly in a diagonal pattern.
- Slide the flexible clamping coupling onto the smooth motor shaft without using hammer blows or excessive force that could damage internal motor bearings.
- Torque the mounting bolts and shaft coupling clamp screws to the specified torque values.
3.Electrical & Feedback Wiring:
- Route power and feedback cables through separate cable carriers or conduits to minimize electro-magnetic interference (EMI).
- Connect the power cable to the motor’s power connector, ensuring the protective earth (PE) grounding lead is firmly secured.
- Connect the resolver feedback cable connector and rotate the locking collar to secure the IP65 seal against moisture and dust ingress.
4.Power-On & Motion Commissioning:
- Apply 24 V logic power to the servo drive and load the correct motor parameter file (AKM21C-ANBNR-00) in the drive commissioning software.
- Perform an initial commutation angle verification check and low-speed manual jog test to confirm correct rotation direction.
- Enable full bus power and verify smooth position tracking across the machine’s full operating speed range.
AKM21C-ANBNR-00
AKM21C-ANBNR-00
Firmware/Software Versions & Upgrade Notes
- Drive Parameter Configuration: Kollmorgen AKM motors use electronic motor nameplate data or standard motor database files (.akm) in Kollmorgen AKD and Servostar drives. Ensure your drive setup file selects the exact “21C” stack and “N” winding configuration to ensure correct current limits and thermal protection models.
- Resolver Alignment: The feedback resolver is factory-aligned to the stator winding commutation angle. Never attempt to loosen the rear feedback housing screws, as shifting the resolver alignment will cause drive commutation faults (e.g., runaway or overcurrent trips).
- Brake Considerations: This specific model suffix (“N”) designates a no-brake configuration. If replacing a motor on a vertical axis, verify that an external mechanical holding brake or counter-weight system is in place to prevent axis dropping when drive power is disabled.
Frequently Asked Questions (FAQ)
Is this Kollmorgen AKM21C-ANBNR-00 motor brand new or reconditioned?
This motor is New Surplus (Original New). It is unissued, unused OEM stock sourced from system integration overstock and strategic factory spares. It has never been installed on a machine or operated in a production environment.
Why buy New Surplus servo motors instead of refurbished ones?
Refurbished servo motors often undergo shaft grinding, bearing replacements, or rewinding that alter internal magnetic tolerances and thermal characteristics. They are also prone to worn resolver feedback components that cause encoder/resolver feedback noise. Sourcing New Surplus guarantees factory-original performance, full insulation life, and zero mechanical wear at a fraction of OEM list price.
Does this motor have a shaft keyway?
No. The “A” shaft option designation in the part number indicates a smooth cylindrical shaft without a keyway. It is designed for use with high-precision friction clamping couplings.
Can I replace an AKM21C-ANBNR-00 with a brake-equipped model?
Physically yes, but you must ensure the servo drive can deliver 24 V DC brake release power and that the motor’s additional length (for the internal brake) fits within your machine’s mechanical envelope.
What warranty is provided with this product?
We back this unit with a 1-Year Comprehensive Replacement Warranty. Every motor undergoes visual inspection, winding resistance testing, and resolver continuity checks prior to shipment.
