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AKM21G-ENGN2-00 Kollmorgen

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The Kollmorgen AKM21G-ENGN2-00 is part of the AKM Synchronous Servo Motors series and features a 58mm frame with a smooth shaft. This standard servo motor uses a Comcoder feedback system with 2048 lines per revolution and has a single turn optical feedback type EPC 15T. It comes equipped with two SpeedTec Ready connectors and does not include a brake system.

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Product Description:

The AKM21G-ENGN2-00 motor is manufactured by Kollmorgen and belongs to the AKM Synchronous Servo Motors series. As a brushless AC servo unit, it delivers controlled torque and velocity for positioning tasks in industrial automation systems that rely on tightly regulated motion. Its compact frame lets the device fit into pick-and-place modules, indexing tables, and small-format packaging axes where high dynamic response and accurate feedback are essential.

At the core of its control loop, a 2048 lines/rev incremental encoder is combined with a Comcoder feedback interface, giving the drive controller fine angular resolution while remaining electrically simple. The laminated stator stack follows the manufacturer’s G winding designation so phase resistance and inductance match drives sized for this torque class. The motor’s square profile measures 58 mm across the mounting face, an envelope that fits compact gearheads and slide stages without interfering with adjacent components. For power and feedback cabling, two SpeedTec Ready connectors are oriented tangentially, allowing quick tool-free connection and keyed polarity to help prevent wiring errors.

This configuration uses the standard customization level, so no user-specific machining or coating is applied. The rotor length index of 1 uses the shortest active stack, which helps lower inertia for quick acceleration. The encoder is a single-turn optical design, so position is tracked within one mechanical revolution. Its code format follows the EPC 15T standard for compatibility with Kollmorgen AKD servo drives. A precision-ground smooth shaft couples to zero-backlash clamps or couplings, minimizing torsional windup in cyclic loads. The rotor is supplied without a brake, making the unit suitable for axes that use external holding devices or where free-spinning is required during manual setup.

Brake System
Without brake
Connector Arrangement
2 SpeedTec Ready connectors
Customization Level
Standard
Feedback Resolution
2048 lines/rev
Feedback System
Comcoder
Feedback Turns
Single turn, optical
Feedback Type
EPC 15T
Frame Dimension
58mm
Product Family
AKM Synchronous Servo Motor
Rotor Length Index
1
Shaft Detail
Smooth Shaft
Winding Designation
G

Frequently Asked Questions about AKM21G-ENGN2-00:

Q: Does the AKM21G-ENGN2-00 feature an integrated brake system?

A: The AKM21G-ENGN2-00 servo motor does not include a brake system.

Q: What type of connector arrangement does the AKM21G-ENGN2-00 use?

A: This model is equipped with two SpeedTec Ready connectors for simplified installation.

Q: What is the feedback resolution of the AKM21G-ENGN2-00 servo motor?

A: The AKM21G-ENGN2-00 provides a feedback resolution of 2048 lines per revolution through its feedback system.

Q: What type of feedback is integrated in the AKM21G-ENGN2-00?

A: This motor utilizes a single-turn optical feedback system with an EPC 15T type.

Q: What are the frame size and shaft detail of the AKM21G-ENGN2-00 motor?

A: The AKM21G-ENGN2-00 has a 58mm frame dimension with a smooth shaft.


Internal Product Review

  • ‘‘The AKM21G-ENGN2-00 is a Kollmorgen AKM synchronous servo motor featuring a Comcoder feedback system and 2048 lines/rev resolution. Dual SpeedTec Ready connectors streamline installation, while the smooth shaft supports accurate mechanical coupling. A well-balanced configuration for precise motion control in standard servo applications.’’

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