Kollmorgen AKM41S-ANS22-02

Product Name AKM41S Medium-Frame Permanent Magnet Synchronous Servo Motor

Product Overview The AKM41S-ANS22-02 is a medium-frame brushless servo motor in the Kollmorgen AKM series, featuring a 130 mm IEC flange, high-energy winding, resolver feedback, keyed shaft, and IP65 protection. It delivers high continuous and peak torque for demanding industrial motion axes.

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Description

Technical Specifications Frame Size: AKM4 (130 mm IEC square flange) Stack Length: S (standard stack) Continuous Stall Torque: 4.77 Nm Peak Torque: 14.3 Nm (3 × continuous) Rated Speed: 3000 rpm Maximum Speed: 5000 rpm Continuous Current: 4.0 Arms Peak Current: 12.0 Arms Rotor Inertia: 0.00087 kg·m² Torque Constant: 1.19 Nm/Arms Back-EMF Constant: 125 V/krpm Winding Code: AN (240 V class) Feedback: S — Resolver (multi-pole, high-resolution analog) Shaft: 2 — Keyed shaft with keyway, no holding brake Connector: 2 — Fixed straight connector (top/rear exit) Protection: IP65 (suffix 02, shaft seal + sealed connectors) Insulation Class: F (155 °C) Ambient Temperature: 0 °C to 40 °C (full torque), derated to 55 °C Weight: Approximately 5.4 kg

Functional Features High-torque-density design with skewed stator for low cogging Resolver feedback immune to dust, vibration, and electromagnetic noise Keyed shaft for positive torque transfer with pulleys, gears, and couplings IP65 rating enables use in washdown and coolant-exposed environments Integrated PTC thermistor for overtemperature protection Compatible with Kollmorgen AKD, S300, S700 servo drives

Application Scenarios Machine tool feed drives and spindle positioning Injection molding and die-casting machine ejector axes Converting, printing, and paper processing machinery Material handling gantries and robotic joint actuators

Material Composition Housing: Aluminum alloy with powder-coated finish Shaft: Chrome-plated alloy steel, hardened and ground Magnets: Sintered NdFeB with nickel-copper-nickel coating Stator: Low-loss silicon steel laminations, class-F copper winding Bearings: Double-row angular-contact ball bearings, lifetime-lubricated Seals: Nitrile rubber shaft seal, IP65 rated

Structural Features 130 mm square flange with 100 mm pilot, four M8 mounting holes Shaft diameter 19 mm, keyway 6 × 6 mm per DIN 6885 Rear-mounted resolver with straight fixed connector Internal thermal sensor wired to connector Optimized finned housing for natural convection cooling

Working Principle Three-phase stator current generates a rotating magnetic field; the resolver tracks rotor angular position and transmits it to the drive; the drive performs field-oriented control to regulate torque, speed, and position with closed-loop bandwidth up to several kHz.

Installation Requirements Mount on rigid machine frame; flatness tolerance ≤ 0.05 mm Use keyed coupling or pulley with interference fit and setscrew Align driven load to shaft within 0.05 mm TIR Tighten flange bolts to 24 N·m Provide minimum 50 mm clearance around motor for heat dissipation

Usage Precautions Radial load at shaft midpoint must not exceed 250 N; axial load ≤ 100 N Do not pressure-wash directly at connector; IP65 excludes immersion Do not operate above maximum speed; bearing and resolver damage will occur Verify drive current rating matches motor peak current Replace motor if shaft seal shows wear or oil leakage

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