Kolmorgen AKM63G-ACSNR-02 Servo Motor Detailed Product Description

I. Product Overview

AKM63G-ACSNR-02 is a 6-frame (138mm flange), three-stage medium-long rotor, high-voltage brushless synchronous servo motor from the AKM series of Kolmorgen. The core configuration includes G-level high-voltage windings, rotary transformer feedback, shaft with keyway, no electromagnetic brake, IP65 protection, and custom 02 connector. It is mainly characterized by high torque density, high dynamic response, high reliability, strong anti-interference, and is compatible with 480VAC / 640VDC busbars. It is specially designed for heavy-duty, high-speed, high-precision positioning, and no-power-off retention scenarios in heavy industrial automation. 

II. Model Code Analysis (AKM63G-ACSNR-02)

AKM: Kolmorgen standard brushless servo motor series

63:

6: Frame size (6 number, 138mm IEC flange)

3: Rotor length (3 stacked segments, medium-long rotor, balancing torque and dynamic performance)

G: Winding grade (G grade, suitable for 480VAC industrial grid / 640VDC bus)

A: Installation method (IEC standard B5 flange, N tolerance)

C: Shaft end form (solid shaft, with standard key slot, key connection transmission)

S: Feedback device (rotary transformer Resolver, single coil, highly reliable, anti-interference)

N: Brake configuration (no electromagnetic brake, no power-off self-locking function)

R: Winding electrical parameters (R type, standard adaptation)

02: Custom configuration (special connectors, reinforced sealing, customized wiring)

III. Core Technical Parameters

(1) Electrical Parameters

Maximum DC bus voltage: 640VDC

Rated power: 6.16kW (640VDC bus)

Continuous stall torque: 25.0Nm

Peak torque: 65.2Nm (≈2.6× continuous)

Continuous stall current: 14.5Arms

Peak current: 39.0A

Reverse electromotive force constant: 98.5Vrms/krpm

Phase-to-phase DC resistance (25℃): 0.58Ω

Rated speed: 4000rpm

Maximum speed: 6000rpm (reduction to 8000rpm is possible)

Insulation class: F grade (155℃)

Winding temperature rise: 100K (relative to 40℃ environment)

Thermal protection: Built-in PTC thermistor (action at 155℃ ± 5%)

Thermal time constant: 38 minutes

(2) Mechanical Parameters

Flange size: 138×138mm (IEC B5)

Shaft diameter: 24mm (solid shaft, with standard key slot)

Rotor rotational inertia: 0.00285kg·m²

Overall weight: 12.5kg (without brake)

Bearing life: ≥20000 hours (rated conditions)

Installation direction: Any direction (V1/V3 universal)

(3) Environment and Protection

Protection grade: Shell IP65, shaft end IP40

Operating temperature: -5℃ ~ +40℃ (altitude ≤1000m)

Storage temperature: -40℃ ~ +85℃

Humidity: 95% RH (no condensation)

Vibration / Shock: Compliant with IEC 60068-2-6 / 2-27

Certifications: CE, UL, cURus certification

(4) Feedback and Connection

Feedback system: 16-bit rotary transformer (single coil, no optical components, temperature resistant, moisture resistant, dust resistant, strong vibration resistant, zero faults in extreme industrial environments, suitable for high-speed, high-temperature, oil contamination, strong electromagnetic interference scenarios).

Key shaft with key slot high rigidity 24mm keyway shaft design, standard key connection, easy installation, strong transmission rigidity, capable of withstanding large torque impact, frequent forward and reverse rotations, and stable and reliable transmission without requiring a tensioning sleeve.

Lightweight and high dynamic without brake

No electromagnetic brake design, reducing weight, lowering inertia, and improving dynamic response. Maximum speed 6000rpm (reduced to 8000rpm under load), suitable for high-speed positioning, rapid start-stop, and heavy-duty non-vertical axis applications.

IP65 high protection and durability

Fully sealed IP65 housing, F-class insulation, custom 02 sealing connector, dustproof, oilproof, splash-proof, resistant to chemical corrosion, suitable for harsh industrial environments, continuous heavy-load scenarios, MTBF ≥ 50,000 hours.

Flexible wiring plug-and-play

Rotating M23 connector with 360° adjustable range, no dead corners in on-site wiring; automatically identified with AKD driver and parameter self-matched, efficient debugging, significantly shortening equipment development cycle. Kollmorgen

V. Typical Application Scenarios

Heavy-duty machine tools: CNC milling machines, gantry machining centers, boring machines, grinding machines (heavy-duty high-speed feed, high-precision positioning)

Rubber and plastic machinery: injection molding machines, extruders, plastic mixers (large torque, continuous heavy-duty operation, stable control)

Textile machinery: high-speed winding heads, twisting machines, knitting machines (high-speed synchronization, tension stability)

Packaging machinery: heavy-duty die-cutting, offset printing, deviation correction, shearing (heavy-duty high-speed, precise positioning)

Automation lines: heavy-duty assembly, robot joints, high-speed conveying (high dynamics, continuous heavy-duty operation)

Printing equipment: gravure printing, flexographic printing, digital printing (precise offset printing, high-speed stability)

Metal processing: cutting, stamping, bending (large torque impact, frequent start-stop)

VI. Suggested Accessories and Configuration

Compatible drivers: Kollmorgen AKD series (AKD-P03606, AKD-P04806)

Recommended cables: M23 power cable (4×2.5mm²), feedback cable (4×2×0.25mm²)

Optional accessories: shaft end seal (IP65), keyway, flange adapter, special length cable

VII. Summary of Product Advantages

AKM63G-ACSNR-02 is the flagship model of the AKM6 series, featuring high voltage, heavy-duty, high speed, high reliability, resolver feedback, key slot, IP65 protection. With 25.0Nm large torque, 640VDC high voltage compatibility, high reliability resolver, key slot shaft high rigidity, lightweight without brake, customized 02 seal as core advantages, it perfectly meets the requirements of heavy-duty, high-speed, high-precision, harsh environment, and no need for power-off maintenance in heavy industry automation. It is the preferred solution for high-performance servo control in heavy machinery, rubber and plastic machinery, textile and packaging fields.