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Kollmorgen AKM65K-ACC2R-0

Product Introduction

AKM65 frame size medium-large inertia high-torque synchronous servo motor, optimized for heavy load high acceleration continuous operation. Model coding breakdown: 65 = frame size, K = high stack length high torque winding, ACC2R = feedback, shaft, insulation, brake combination option, suffix 0 = no holding brake configuration. Fully compatible with Kollmorgen AKD / S700 series servo drives for plug-and-play automatic identification.
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Detailed content

Technical Specifications

  1. Mechanical Core Parameters
  • Frame Size: AKM65 (160 mm square flange)
  • Rotor Inertia: Medium-High Inertia Grade
  • Standard Shaft: Cylindrical k6 tolerance shaft with DIN 748 keyway
  • Bearing Rated Service Life: ≥ 20000 hours under rated continuous load
  1. Electrical Performance Specs
  • Continuous Stall Torque: 25.0 N·m
  • Peak Torque (2-second sustainable): 65.2 N·m
  • Rated Speed: 3000 RPM
  • Max Allowable Mechanical Speed: 6000 RPM
  • Winding Rated Voltage: 230 VAC matching drive bus 320 VDC
  • Insulation Grade: DIN 57530 Class F
  1. Feedback Configuration (ACC2R Code)
  • Built-in Hiperface Digital Absolute Multi-turn Encoder, 23-bit resolution
  1. Environmental Protection Grade
  • Motor Housing IP65; Shaft Seal IP65 with standard shaft lip seal
  1. Thermal Protection
  • Embedded PTC thermal sensor, trip temperature 155°C ±5%

Functional Features

  1. Rare-earth neodymium iron boron permanent magnet rotor design for ultra-high torque density
  2. Ultra-low cogging torque electromagnetic winding design, smooth low-speed operation without vibration
  3. Integrated single-cable encoder interface compatible with AKD/S700 drive SFD wiring standard
  4. Embedded PTC overheat protection sensor linked to drive fault diagnosis system
  5. Standard IM B5 flange mounting form, support vertical V1 / V3 installation orientation
  6. No built-in holding brake (suffix 0); optional external brake module for vertical load anti-falling application

Performance Highlights

  1. High peak-to-continuous torque ratio supports 260% overload capacity for rapid acceleration heavy load motion
  2. IE4 ultra-high energy efficiency grade, 30% lower power consumption than conventional asynchronous servo motors
  3. Wide constant torque speed range from 0 RPM to rated speed, stable torque output at zero low speed
  4. Multi-turn absolute encoder retains zero position data after full power loss, no homing required at equipment restart
  5. Low rotor inertia fluctuation ensures consistent dynamic response across full load range

Material Composition

  • Motor Stator Housing: Cast aluminum alloy with integral cooling fin structure
  • Rotor Core: Laminated silicon steel sheet with surface-mounted rare-earth permanent magnets
  • Stator Winding: Class F high-temperature resistant enameled copper wire, vacuum impregnated insulating varnish
  • Front/Rear Bearing Cover: Die-cast aluminum alloy
  • Output Shaft: Medium carbon quenched and tempered alloy steel, surface hardening treatment
  • Encoder Housing: High-strength PA66 glass fiber reinforced plastic

Structural Characteristics

  1. Integral cast aluminum housing with circumferential cooling fins for passive air convection heat dissipation
  2. Front double bearing support structure to improve radial load resistance of output shaft
  3. Rear integrated encoder chamber fully sealed with rubber O-ring to prevent dust and moisture ingress
  4. Single combined power + encoder cable outlet at rear end cap, single-cable wiring standard
  5. Standard circular mounting flange with evenly distributed fixing bolt holes for universal mechanical coupling installation

Working Principle

Three-phase sinusoidal alternating current output by servo drive generates rotating magnetic field inside motor stator; surface-mounted rare-earth permanent magnet rotor generates magnetic coupling torque with stator rotating field to drive output shaft rotation. Rear-end absolute encoder continuously samples rotor mechanical angle and rotational speed, transmits digital position signal to matched servo drive to form fully closed-loop position regulation. Embedded PTC thermal element monitors stator winding real-time temperature to trigger drive overheat protection once temperature exceeds threshold.

Applicable Industries

Heavy-duty CNC machine feed axes, metal cutting gantry equipment, injection molding robotic manipulators, large automated stamping transfer axes, new energy battery production heavy conveying platforms, hydraulic press servo replacement systems

Installation Requirements

  1. Standard IM B5 flange horizontal mounting preferred; vertical installation requires additional mechanical anti-fall locking device for vertical load
  2. Output shaft coupling coaxiality tolerance ≤ 0.02 mm to avoid bearing premature wear
  3. Leave minimum 100 mm clearance at motor rear encoder end cap for cable bending and maintenance
  4. Operating ambient temperature: -5°C ~ +40°C; altitude over 1000 m requires 6% torque derate per 1000 m elevation
  5. Install dust-proof protective cover if deployed in metal chip cutting workshop environment

Usage Precautions

  1. Do not apply impact hammer force on motor output shaft during coupling installation; permanent magnet rotor demagnetization will occur
  2. Avoid long-term continuous operation at 100% peak torque; permanent magnet irreversible demagnetization risk under high temperature overload
  3. Single-cable connector locking nut must be fully tightened to maintain IP65 waterproof and dustproof performance
  4. Do not expose motor housing to direct high-pressure water jet cleaning beyond IP65 rated protection limit
  5. Regularly inspect bearing lubrication grease every 12 months under continuous 24-hour production operation

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