Kollmorgen AKM33E-ANCNR-00

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

1. Ultra-low inertia rotor construction delivers instantaneous high acceleration response for high-cycle fast indexing automation equipment
2. 20-bit single-turn absolute digital encoder feedback provides high-accuracy absolute rotor position data upon power-up without homing cycle execution
3. Optimized stator tooth magnetic geometry minimizes cogging torque, ensuring vibration-free smooth constant-speed rotation at low and high operating velocities
4. Class F high-temperature winding insulation tolerates long-duration cyclic overload operation without thermal degradation of winding insulation
5. Unified IP65 full housing sealing withstands factory dust, oil mist, coolant splashes without ingress of contaminant particles
6. 240VAC universal winding compatible with global industrial standard single/three-phase servo drive power supply architectures
7. Standard 90mm IEC flange interchangeable with all third-party 3-frame servo motor mechanical mounting accessories
8. IE4 ultra-high efficiency permanent magnet rotor reduces steady-state power consumption during continuous production operation

Working Principle

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

1. 20-bit absolute encoder eliminates mandatory homing routine after equipment power loss, drastically reducing production downtime during machine restarts
2. Ultra-low rotor inertia enables rapid acceleration/deceleration cycles, raising overall machine throughput for high-speed packaging and automation lines
3. Near-zero cogging torque guarantees ultra-smooth rotation, eliminating surface finish defects for laser cutting, printing and precision grinding applications
4. IP65 unified enclosure removes requirement for external protective shrouding on workshop floor machine installations
5. IE4 premium energy efficiency lowers factory electrical operating expenditure over multi-year continuous production service life
6. Digital absolute encoder feedback exhibits superior electromagnetic noise resistance compared to analog resolver sensors in VFD-dense electrical cabinet environments
7. Long-life sealed bearing assembly delivers 200,000 hours of rated continuous operation without scheduled bearing lubrication maintenance

Applicable Industries

Installation Mandatory Requirements

1. 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
2. Maintain unobstructed natural convection airflow around all exterior motor housing surfaces; fully enclosed unventilated mounting housings without forced cooling fans are prohibited
3. Separate shielded motor power cable and digital encoder feedback cable by a minimum 10cm physical separation inside cable trays and wiring conduits
4. Full rated torque performance valid only for installation altitude ≤1000m above sea level; continuous torque output must be derated 6% per additional 1000m elevation
5. Exclusively deploy original factory Kollmorgen shielded power and encoder feedback cables to retain full EMC electromagnetic interference compliance
6. 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

1. Do not operate motor beyond the published maximum mechanical speed of 8500 RPM to prevent permanent bearing fatigue and rotor magnet delamination damage
2. 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
3. Perform annual visual inspection of front shaft oil seal to identify coolant or grease leakage in oil mist heavy production environments
4. Clear accumulated metal shavings, dust and coolant residue from motor housing outer surfaces monthly to maintain passive heat dissipation efficiency
5. Disassembly of rear encoder housing voids product warranty and erases factory encoder position calibration data
6. Prevent sustained continuous peak torque operation exceeding 30 seconds duration to avoid irreversible thermal damage to Class F stator winding insulation