Technical Specifications
- Frame Classification: AKM3 90mm IEC standard square mounting flange
- Continuous Rated Shaft Torque: 4.7 N·m
- Peak Transient Overload Torque: 14.1 N·m
- Base Rated Continuous Rotational Speed: 4800 RPM
- Absolute Maximum Mechanical Shaft Speed: 8500 RPM
- Stator Winding Voltage Class: 240VAC universal industrial winding
- Rotor Inertia: 0.00082 kg·m² ultra-low inertia rotor design
- Feedback Hardware (ANCNR Code Definition): Digital high-resolution incremental encoder with 20-bit single-turn absolute position sensing
- Shaft Structure: Standard solid keyed output shaft, hollow bore not included
- Brake Configuration: No integrated electromagnetic holding brake
- Enclosure Environmental Rating: IP65 full motor housing; IP67 front output shaft sealing gasket
- Winding Insulation Temperature Class: Class F, maximum sustained winding temperature 155°C
- Nominal Operating Ambient Temperature: -5°C ~ +40°C (full torque rating below 1000m altitude)
- Storage Temperature Operating Band: -40°C ~ +85°C
- Allowable Relative Humidity: 5% to 90% RH non-condensing atmosphere
- Vibration Standard Compliance: IEC 60034-14 Grade A low vibration classification
- Standard Physical Dimensions: 182mm (Length) × 90mm (Width) × 90mm (Height)
- Single Unit Net Weight: 3.05kg
- Global Compliance Certifications: CE, UL Listed, RoHS Restriction of Hazardous Substances, IE4 premium energy efficiency grade
Functional Features
- Ultra-low inertia rotor construction delivers instantaneous high acceleration response for high-cycle fast indexing automation equipment
- 20-bit single-turn absolute digital encoder feedback provides high-accuracy absolute rotor position data upon power-up without homing cycle execution
- Optimized stator tooth magnetic geometry minimizes cogging torque, ensuring vibration-free smooth constant-speed rotation at low and high operating velocities
- Class F high-temperature winding insulation tolerates long-duration cyclic overload operation without thermal degradation of winding insulation
- Unified IP65 full housing sealing withstands factory dust, oil mist, coolant splashes without ingress of contaminant particles
- 240VAC universal winding compatible with global industrial standard single/three-phase servo drive power supply architectures
- Standard 90mm IEC flange interchangeable with all third-party 3-frame servo motor mechanical mounting accessories
- IE4 ultra-high efficiency permanent magnet rotor reduces steady-state power consumption during continuous production operation
Working Principle
Three-phase sinusoidal current output from a paired Kollmorgen AKD servo drive energizes distributed copper stator windings, generating a continuously rotating alternating electromagnetic field inside the motor stator chamber. High-energy neodymium permanent magnets fixed to the rotor core magnetically couple to the stator rotating field, producing continuous variable rotational torque proportional to drive output current magnitude. A rear-mounted 20-bit absolute digital encoder precisely captures real-time rotor angular position and rotational velocity, transmitting digital serial feedback signals to the servo drive controller. The drive processes feedback data to execute closed-loop torque, velocity and position control algorithms, dynamically adjusting output current to maintain target motion parameters regardless of fluctuating external mechanical load conditions. Low-cogging tooth geometry suppresses magnetic flux ripple to eliminate velocity fluctuation and workpiece surface defects during precision machining processes.
Material & Structural Composition
- Motor Outer Housing: Die-cast lightweight aluminum alloy finished with matte black anti-corrosion powder coating
- Rotor Core Assembly: Laminated cold-rolled silicon steel stack with sintered neodymium iron boron rare earth permanent magnets
- Stator Assembly: Stacked silicon steel stator core with enamel insulated copper distributed three-phase windings
- Output Drive Shaft: Precision ground hardened alloy steel with machined anti-slip keyway for mechanical load coupling
- Bearing Assembly: Dual sealed deep-groove high-temperature ball bearings filled with long-life industrial synthetic grease
- Feedback Encoder Module: Hermetically sealed digital absolute encoder with aluminum protective rear cover
- Sealing Hardware: Nitrile rubber elastomer gaskets and shaft oil seals for IP65/IP67 environmental ingress protection
Advantage Highlights
- 20-bit absolute encoder eliminates mandatory homing routine after equipment power loss, drastically reducing production downtime during machine restarts
- Ultra-low rotor inertia enables rapid acceleration/deceleration cycles, raising overall machine throughput for high-speed packaging and automation lines
- Near-zero cogging torque guarantees ultra-smooth rotation, eliminating surface finish defects for laser cutting, printing and precision grinding applications
- IP65 unified enclosure removes requirement for external protective shrouding on workshop floor machine installations
- IE4 premium energy efficiency lowers factory electrical operating expenditure over multi-year continuous production service life
- Digital absolute encoder feedback exhibits superior electromagnetic noise resistance compared to analog resolver sensors in VFD-dense electrical cabinet environments
- Long-life sealed bearing assembly delivers 200,000 hours of rated continuous operation without scheduled bearing lubrication maintenance
Applicable Industries
High-speed packaging automation, precision laser cutting equipment, semiconductor wafer handling robots, textile digital printing machinery, medical automated diagnostic motion stages, CNC small-part high-speed machining centers, electronic component pick-and-place assembly equipment
Installation Mandatory Requirements
- Mount motor via standard 90mm square IEC flange utilizing four minimum M8 Grade 8.8 high-tensile mounting bolts, tightened to factory specified 28 N·m torque value
- Maintain unobstructed natural convection airflow around all exterior motor housing surfaces; fully enclosed unventilated mounting housings without forced cooling fans are prohibited
- Separate shielded motor power cable and digital encoder feedback cable by a minimum 10cm physical separation inside cable trays and wiring conduits
- Full rated torque performance valid only for installation altitude ≤1000m above sea level; continuous torque output must be derated 6% per additional 1000m elevation
- Exclusively deploy original factory Kollmorgen shielded power and encoder feedback cables to retain full EMC electromagnetic interference compliance
- Mount motor within 0° to ±20° horizontal tilt range; vertical downward shaft mounting is restricted to avoid premature front bearing grease depletion
Operation & Maintenance Precautions
- Do not operate motor beyond the published maximum mechanical speed of 8500 RPM to prevent permanent bearing fatigue and rotor magnet delamination damage
- All external radial and axial mechanical loads applied to the output shaft must remain within factory defined load limits to avoid shaft bending and bearing failure
- Perform annual visual inspection of front shaft oil seal to identify coolant or grease leakage in oil mist heavy production environments
- Clear accumulated metal shavings, dust and coolant residue from motor housing outer surfaces monthly to maintain passive heat dissipation efficiency
- Disassembly of rear encoder housing voids product warranty and erases factory encoder position calibration data
- Prevent sustained continuous peak torque operation exceeding 30 seconds duration to avoid irreversible thermal damage to Class F stator winding insulation
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