Kolmorgen AKM42E-EKGNR-01 Servo Motor Detailed Product Description

I. Complete Model Analysis

1. Main Model: AKM42E

AKM: Kolmorgen high-performance permanent magnet synchronous servo motor series

4: 4-slot base → 84×84mm NEMA standard square flange

2: Stator overlap length 2 → Medium body length, torque and rotor inertia balanced

E: High-voltage winding → Suitable for three-phase 400-480V AC, DC bus 640V DC

2. Configuration Code: EKGNR

E: Installation form → 84×84mm NEMA square flange

K: Output shaft → φ14mm shaft with key slot (standard key slot), shaft end with M8 fixing screw holes

G: Feedback type → 16-bit 2-pole hollow shaft resolver (Resolver)

N: Electromagnetic brake → No built-in brake

R: Connector → Double M23 straight connectors (power + feedback separation)

3. Suffix -01

Special customized version, extended shaft extension (31.75mm), with shaft sealing, double sleeve

Protection level increased to IP67 (body + shaft end)

Standard factory standard, F-class insulation, lifetime lubrication standard bearings 

II. Core Electrical Parameters

Continuous no-load torque: 3.42 N·m

Rated torque: 2.72 N·m

Peak torque: 10.2 N·m (3 times rated)

Rated power: 1.14 kW (640V DC bus)

Rated speed: 4000 rpm

Maximum speed: 5470 rpm

Applicable voltage: Three-phase 400/480V AC

DC bus: 640V DC

Rated current: 2.74 A RMS

Peak current: 8.22 A RMS

Pole number: 6 poles

Rotor inertia: 0.00015 kg·m²

Insulation class: F grade 155℃

Overall machine weight: approximately 3.4 kg

III. Feedback System (16-bit resolver)

Type: 16-bit 2-pole hollow shaft resolver (Resolver)

Resolution: 16-bit (65536 ppr)

Core features:

High shock resistance, high temperature resistance, oil resistance, extremely strong reliability in extreme industrial environments

No electronic components, superior anti-interference ability than encoders

Compatible with all models of KEMA drivers, supports speed and position closed-loop control

Sturdy structure, long lifespan, maintenance-free

IV. Mechanical Structure Specifications

Installation flange: 84×84mm NEMA square flange

Shaft diameter / shaft type: φ14mm with keyway shaft, extended shaft length 31.75mm

Shaft seal: Standard shaft seal ring

Shaft sleeve: Double shaft sleeve design

Brake: No built-in brake, lower rotor inertia, faster dynamic response

Connector: Double M23 straight connectors (power, feedback separation)

Protection class: IP67 for the entire machine (body + shaft end)

Shell: RAL 9005 matte black enamel

Bearings: Industrial-grade lifetime lubrication maintenance-free bearings

V. Environment and Certification

Operating temperature: -20℃ ～ +40℃

Storage temperature: -30℃ ～ +85℃

Relative humidity: 5%～95% RH, no condensation

Anti-vibration / shock: Industrial-grade high anti-vibration design

Compliance certifications: CE, UL, cULus, RoHS

VI. Core Product Features

480V high-voltage E winding

Compatible with industrial 400/480V high-voltage power grid, small current, low wiring loss, high system efficiency.

84mm NEMA standard flange

North American standard installation dimensions, compatible with North American specification equipment, easy replacement.

Balanced torque / inertia for medium-heavy load capacity and high-speed dynamic response, suitable for high-frequency start-stop precise positioning.

16-bit highly reliable resolver

Stable operation in extreme environments (high temperature, high vibration, dusty), stable positioning accuracy.

Extended keyway shaft + seal

31.75mm extended shaft, with keyway, shaft seal, double shaft sleeve, suitable for heavy load, long shaft extension, oil-proof and water-proof scenarios.

Double M23 straight connectors

Flexible wiring, convenient installation, anti-vibration, separate design for easy maintenance.

No brake design

Suitable for horizontal moving shafts, no vertical fall risk conditions, lower inertia, faster acceleration.

IP67 high protection

Dust-proof, water-proof, suitable for harsh industrial environments with humid, oily, and dusty conditions.

VII. Compatible Drives

KEMA 480V/640V high-voltage series:

AKD-P02407, AKD-P03607

AKD2G models of the same voltage level

Supported protocols: resolver feedback, EtherCAT, CANopen, pulse / analog quantity

VIII. Typical Applications

Numerical control equipment, packaging machinery, textile machinery, material conveying systems, injection molding machines, woodworking machinery, semiconductor equipment, food processing machinery; Compatibility: 84mm NEMA flange, 480V high voltage, medium load high precision, high reliability tachometer, extended keyway shaft, no brake, IP67 high protection scenario.

IX. Summary in one sentence for the model

AKM42E-EKGNR-01:

84mm NEMA square flange, 4-position base with medium overlap length, 480V high voltage, extended keyway shaft (31.75mm), 16-bit tachometer, no brake, double M23 straight connectors, IP67 high protection servo motor;

Positioning: General high voltage, medium heavy load, high reliability, extreme harsh environments, long shaft extension heavy load transmission.