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Kollmorgen AKM73P-ACCNAA0
Product Brief: High-torque-density 3-phase PMSM servo motor in size 73 (132 mm square flange), medium stack length (code P = stack 3 of 4 for AKM7), optimized for continuous-duty industrial motion axes. Factory-fitted with resolver feedback, smooth (no keyway) shaft, no holding brake, standard IP65 seals, and rotatable military-style circular connector. Directly auto-recognizable by AKD-family drives via motor ID resistor network in connector.
Detailed content
Frame Size Designation: AKM73 — Frame 7, 132 mm × 132 mm flange, shaft Ø 24 mm (typical for AKM7)
Stack Length Code: P = 3rd stack length (medium — continuous stall torque mid-range of AKM7 family)
Rated / Continuous Stall Torque (Tc): ≈ 16.0 – 18.5 Nm (exact value winding-dependent; AKM73P typical ~17.0 Nm @ 40 °C ambient, 100 K temp rise)
Peak Torque (Tp, short term): ≈ 45 – 53 Nm (approx. 3× Tc, < 3 s)
Rated Speed (at max power): 3000 rpm (typical for standard 240/480 V windings); max speed 3500–5000 rpm winding-dependent
Rated Power (Continuous, @ 3000 rpm): ≈ 5.3 kW
Rated Current (Continuous, RMS): ≈ 10–12 A (winding dependent)
Peak Current (RMS): ≈ 30–36 A
Torque Constant (Kt, line-to-line): ≈ 1.5 – 1.7 Nm/A (winding dependent)
Back-EMF Constant (Ke, line-to-line): ≈ 90–110 V/krpm (sinusoidal, RMS line-to-line)
Winding Resistance (Line-Line, 20 °C): ≈ 0.6 – 1.0 Ω
Winding Inductance (Line-Line): ≈ 8 – 15 mH
Rotor Inertia (without brake): ≈ 28 × 10⁻⁴ kg·m² (28 kg·cm²)
Feedback Device: 2-pole Resolver (standard) — code “C” in ACCNAA0 = resolver, no commutation tracks required (drive synthesizes; hall-less)
Brake: None — “0” in last position
Shaft Type: Smooth shaft (no keyway) — “A” in code; optional keyway available on other variants
Sealing / Protection: IP65 (shaft seal + O-ring on connector); optional IP67 on special order
Insulation Class: F (155 °C), temperature rise rated 100 K above 40 °C ambient
Thermal Sensor: KTY84-130 or PTC (optional per winding) — standard on most AKM; check nameplate
Connector Type: Rotatable M23 (17-pin for resolver+power ID) or Intercontec M23, IP65 when mated
Housing Material: Black enameled steel laminated stator stack; aluminum alloy flange and end bell; neodymium-iron-boron (NdFeB) magnets
Cooling: Natural convection / surface radiation; no fan required
Operating Temperature (Ambient): 0 °C to +40 °C (rated); –20 °C to +55 °C with derating
Weight (approx.): ≈ 16–18 kg (stack-length dependent)
Mounting Pattern: IEC 132 mm flange, 4× M10 through-holes on 165 mm BCD
Compliance: cURus, CE, RoHS
Applicable Industries: Large-format converting winders/unwinders, injection molding eject axes, CNC rotary tables, heavy packaging form-fill-seal main drives, metalworking feed axes, printing press impression rolls
Installation Requirements: Mount on machined flange perpendicular to load coupling; align shaft coaxially to avoid side load > specified radial limit (~600 N max at shaft end for AKM7); tighten mounting bolts to torque spec; bond motor PE terminal to machine ground; connect shielded feedback cable with shield grounded at drive end only.
Usage Notes: AKM73P resolver is single-speed 2-pole — AKD drive auto-commutates from resolver signal; motor ID resistors in connector allow drive to auto-load default parameters — always execute “Tune” after first motor detect; if no brake fitted ensure no unintended coast during emergency stop; smooth shaft requires shrink disc or keyless locking device for torque transmission unless keyed variant used.
