Digital guide
You are here:
Kollmorgen AEM-090-30
Product Series: AEM Series — Frameless/Housed AC Servo Motor
Product Introduction:
The AEM-090-30 is a high-performance AC synchronous servo motor from Kollmorgen’s AEM product line. Designed for applications demanding high power density, low cogging torque, and excellent dynamic response. The motor features a robust construction suitable for continuous-duty operation in demanding industrial environments.
Detailed content
Model Designation Breakdown:
- AEM = AC Servo Motor (AEM Series)
- 090 = Frame Size 90 (approx. 90mm outer diameter)
- 30 = Speed Rating 30 (3000 RPM base speed)
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 90 mm |
| Continuous Torque | 8.5 Nm |
| Peak Torque | 25.5 Nm |
| Rated Speed | 3000 RPM |
| Rated Power | 2.7 kW (3.6 HP) |
| Supply Voltage | 480 VAC (3-Phase) |
| Frequency Range | 0 – 400 Hz |
| Motor Type | AC Synchronous (Permanent Magnet) |
| Cooling Method | Convection / Liquid Cooled (optional) |
| Encoder Type | Multi-Turn Absolute, Hiperface DSL |
| Encoder Resolution | 128 cycles/rev (512 counts/rev) |
| Protection Class | IP65 (with connector) / IP44 (standalone) |
| Insulation Class | Class F (155°C) |
| Weight (approx.) | 4.2 kg |
Material Composition:
- Stator Core: High-grade silicon steel laminations (low core loss)
- Stator Windings: Copper windings with Class F insulation
- Rotor: High-energy rare-earth permanent magnets (NdFeB)
- Housing: Aluminum alloy (anodized for corrosion resistance)
- Shaft: Hardened stainless steel (ground and polished)
- Bearings: Deep-groove ball bearings (sealed, grease-lubricated for life)
Structural Features:
- Compact cylindrical design with optimized electromagnetic geometry
- Integrated encoder mounting on non-drive end (NDE)
- Keyed shaft output with DIN 6885 standard keyway
- Thermal sensor (PTC/KTY) embedded in stator windings
- Balanced rotor for low vibration at high speed
Working Principle:
The AEM-090-30 operates on the principle of a three-phase permanent magnet synchronous motor (PMSM). The stator windings are energized by a three-phase AC supply from the servo drive, generating a rotating magnetic field. The permanent magnet rotor locks to this rotating field and follows it synchronously. The servo drive continuously adjusts the phase, frequency, and amplitude of the stator current to precisely control torque, speed, and position. The multi-turn absolute encoder provides real-time rotor position feedback to the drive for closed-loop control.
Key Advantages:
- High power-to-weight ratio — delivers 2.7 kW from a 90mm frame
- Ultra-low cogging torque (< 1% of rated torque) for smooth motion
- Wide speed range — constant torque up to 3000 RPM, field weakening beyond
- Multi-turn absolute encoder — no homing required after power loss
- Liquid cooling option — enables continuous high-torque operation
- IP65 rated — suitable for harsh industrial environments
Applicable Industries:
- CNC Machine Tools
- Industrial Robotics
- Printing & Packaging Machinery
- Semiconductor Manufacturing Equipment
- Laser Cutting & Welding Systems
Installation Requirements:
- Mount using DIN flange or foot mounting (flange: 4-bolt pattern, M6 threads)
- Ensure shaft alignment tolerance < 0.05 mm (angular < 0.1°)
- Use shielded power and feedback cables (Kollmorgen B-series recommended)
- Verify cooling system flow rate if liquid-cooled (min. 2 L/min)
- Ground the motor housing to < 1 Ω earth resistance
Usage Precautions:
- Do not exceed rated voltage (480 VAC) — overvoltage damages insulation
- Do not operate without encoder connected — drive will fault
- Ambient temperature range: -10°C to +40°C (derate above 40°C)
- Avoid exposure to conductive dust or liquids beyond IP rating
- Follow torque-speed curve strictly — do not sustain peak torque continuously
