Servo Motors
2G Motion System
AKM2G Servo Motor
AKM Family
Stainless Steel AKMH Series
AKM2G & AKM Low Voltage DC Servo Motors
Kollmorgen Goldline® Series Servo Motors
EKM Series Servo Motors
Serviced Motors

Kollmorgen’s brushless servo motors offer the highest torque/inertia ratio over a broad range of speeds—including high speed capabilities up to 8,000 rpm for standard designs and up to 70,000 rpm for special designs.

Kollmorgen introduces the next generation of motion for more ambitious machines built on more capable performance and more confident engineering. The Kollmorgen 2G Motion System harnesses the full performance potential of our leading AKM2G servo motors and perfectly matched AKD2G drives designed to deliver unrivaled power density and control. The result is significantly enhanced torque, responsiveness and SafeMotion capabilities in a compact footprint that enables easy installation and total flexibility.

AKM2G represents the latest evolution of the industry-leading AKM motor family. With significant torque increases in the same motor size OEMs can achieve substantial performance improvement without changing the motor mounting or using more machine space.

Our best-in-class, high-performance servomotors offer a wide range of mounting, connectivity, feedback and other options. More than 500,000 standard models are available along with co-engineered modifications to suit almost any application requirement. Gearmotor, washdown and food-grade versions are available.

The AKMH Series is built to withstand the most rigorous of washdown regimens. The combination of the AKMH’s IP69K construction and corrosion resistant materials make for a servo motor that will last the life of your machine.

AKM and AKM2G Low Voltage servo motors are designed for high-performance, demanding dynamic applications which require 24-96 VDC bus input.

The Kollmorgen Goldline® Series provides optimum performance for applications that involve rapid acceleration/deceleration, compliant loads or large inertia mismatches. These motors are available for 230 and 400/480 VAC line voltage. We also offer explosionproof, washdown and submersible models.

These enhanced, high performance motors are MilSpec 810E rated and IP67 sealed. They are supplied standard with a stainless steel shaft and chemical agent-resistant paint for reliable duty in harsh environmental conditions.

While these servomotors are not available for new applications, Kollmorgen continues to provide replacement motors and support for existing customers.

Kollmorgen pioneered the development of direct drive technology. Today, our Direct Drive Rotary (DDR) and Direct Drive Linear (DDL) motors bring you industry-leading performance, zero maintenance, clean mechanical assembly, improved accuracy, higher throughput, better reliability, and smooth, quiet operation.

Our exclusive Cartridge DDR® servomotors combine the performance advantages of a frameless motor with the ease of installation of a full-frame motor. The advanced electromagnetic design provides up to 50 percent more torque density than comparably sized conventional servo motors.

Housed DDR servomotors offer high torque density, precise performance and zero maintenance in an easily installed servo solution.

The KBM series offers high performance, long life, simple installation in a motor kit that can be embedded directly in your mechanical design. A huge selection of standard motors and cost-effective modifications ensure a perfect fit.

Our TBM series provides direct drive frameless motors designed to be directly embedded in the mechanical structure of your systems, minimizing weight, size and inertia without sacrificing performance.

The frameless configuration of these relatively high-torque, low-speed, pancake-style motors eliminates shaft, bearings, endbells and couplings for reduced volume, weight and complexity when integrated directly with the load.

A Direct Drive Linear (DDL) motor is basically a rotary motor that is laid out flat and directly coupled to the driven load, eliminating the need for ball/lead screws, rack and pinions, belts/pulleys and gearboxes.

Our high-performance, brushless, maintenance-free stepper motors provide precise, extremely cost-effective motion control.

The PMX family of hybrid stepper motors offers unmatched versatility through a wide range of standard and customizable options, unmatched value through exceptional performance at an affordable cost, and unmatched reliability through Kollmorgen’s superior motion expertise and build quality.

The POWERMAX II® M and P Series are NEMA 23 stepper motors feature an octagonal housing and are available in half-, single-, and two-stack configurations. These units offer a wide variety of standard options and affordable co-engineered modifications, without sacrificing scalability and lead time.

The POWERPAC series includes rugged NEMA 34 and 42 hybrid stepper motors designed to achieve extremely high torque. These units are available with standard options and co-engineered modifications to provide an exact application fit.

Featuring a conventional round frame, these high-efficiency, low-loss stepper motors provide lower rotor inertia and higher acceleration compared to other motors in their class. They are available in NEMA 23, 34, and 42 frame sizes.

Our T2, T, KM and MH172 Series stepper motors provide the highest torque in a wide range of frame sizes. These motors offer a high-performance, cost-effective alternative to pneumatic, hydraulic and servomotor systems.

CT series Nema 17 and 23 motors incorporate innovative cooling technology, high-torque magnetic designs, rugged bearings and high-voltage insulation systems. These motors support large mechanical loads and can be used with any stepper drive.

MX Series are Explosion-proof rated stepper motors, designed to meet Class I, Division 1, Group D hazardous location requirements. They are available in NEMA 34 and 42 frame sizes providing minimum holding torques from 1.27 to 9.82 N-m (180 to 1,390 oz-in).

AC Synchronous Motors
ST/SN
KS & SS Series
Hazardous Duty Synchronous Motors

Kollmorgen offers two brands of AC Synchonous motors in their Pacific Scientic ST/SN Series and Superior Electric products. High performance in four frame sizes, NEMA 23, 34, 42, 66 are available. Resistor - capacitor kits are also available.

ST and SN Series synchronous motors provide high performance in three frame sizes, NEMA 23, 34 and 42 (60, 90 and 110 mm). Resistor-capacitor kits are also available.

These high-torque synchronous motors are available in NEMA 23, 34 and 42 frame sizes (60, 90 and 110 mm), providing up to 1,500 oz-in (1,059 N-cm) of torque.

Providing torque up to 1,500 oz-in (1,059 N-cm), these synchronous motors are available in UL Listed versions suitable for use in Class I, Division 1, Group D hazardous locations. Frame sizes are NEMA 42 and 66 (110 mm and 170 mm).

Brush DC Motors
DC Torque Motors
Permanent Magnet DC (PMDC)
Serviced Motors

Kollmorgen’s family of brush DC motors offers an extremely wide variety of sizes and package types.

Direct drive brush DC torque motors are ideal for minimizing size, weight, power and response time while maximizing rate and position accuracies. They provide a servo actuator that can be attached directly to the driven load.

Our permanent magnet brush DC motors offer rugged, quality construction and dependable operation. Many options are available, including explosionproof models, washdown models, co-engineered modifications and more. With a well-deserved reputation for value, these motors are backed by a two-year warranty.

Our low-inertia brush DC servomotors are no longer available for new applications. We continue to service them for existing customers.

Washdown Food Grade
Stainless Steel AKMH Series
STF Washdown Motor - Food Grade
AKM Washdown and Food Grade

Quality standards and legal regulations impose strict hygienic requirements on equipment used in the food and beverage, meat and dairy, pharmaceutical, and cosmetics industries.

These permanent magnet DC (PMDC) motors are SCR-rated and adhere to NEMA standards. They are available 90 or 180 VDC, from 1/4 to 2 HP.

AKM Washdown and Washdown Food Series servomotors incorporate a protective 2-K coating, IP67-rated seals, stainless steel hardware, special greases and other materials designed for applications such as food, beverage and pharmaceutical processing where hygiene and frequent cleaning are critical requirements.

Explosion Proof
EP Series Explosion Proof
Hazardous Duty Synchronous Motors
Goldline EB Series
MX Series Hazardous Duty

Explosion-proof versions of motors are designed to minimize the risk of explosion, and to contain any internal explosion that may occur without allowing it to propagate to the outside environment.

These permanent magnet DC (PMDC) motors are SCR-rated and adhere to NEMA standards. They are available in a variety of DC voltages, from 1/4 to 3/4 HP.

Based on the 230 VAC B and M Series, the EB Series provides a high-performance explosionproof servomotor that is UL Listed for use in Class I, Division 1, Group C and D hazardous locations.

Accessories
Accessories for Digital Motion Systems in Europe
KCM Capacitor Module
Servo Cables
Regen Resistors

Kollmorgen is your single-source supplier for all the accessories you need to install your complete motor/drive solution.

Accessories for digital Motion Systems in Europe

The modules support the DC link and allow a reduction of energy losses when decelerating as well as the bridging of short power outages

Drive-to-motor connection methods vary widely depending on rated current and voltage, minimum code distances, different shielding concepts and other factors. We supply pre-assembled ready-to-use cables that meet relevant CE and UL requirements for any power and feedback requirement.

During braking with the aid of the motor, electrical energy is fed back into the drive. If excess energy is not dissipated, an over-voltage fault can occur. A regeneration or “regen” resistor allows your drive to function normally during deceleration.

AKM2G Servo Motor

AKM2G represents the latest evolution of the industry-leading AKM motor family

With significant torque increases in the same motor size OEMs can achieve substantial performance improvement without changing the motor mounting or using more machine space.

Designers needing to reduce machine size benefit from AKM2G’s ability to deliver increased power and torque density in a smaller footprint.

Extensive selection of feedback options to match application and performance requirements including options that support functional safety
Shaft, mounting, and connector options
Holding brake and thermal sensor options
Available low voltage models bring the benefits of AKM2G to portable, mobile and battery powered applications where higher efficiency translates to a smaller motor with lower energy demand

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Product available worldwide

Deliver Higher Machine Performance

Higher power and torque density, lower inertia rotor design and Ready for Co-Engineering capability enable you to design your highest performing machine.

Performance Overview

Achieve Your Desired Perfomance in Less Space

The AKM2G drops right into existing machine designs to increase performance, when compared to competing motors, without increasing the size of the motor.

See specs 2D/3D Models

Increase Feedback Performance

Available standard with choice of single cable Kollmorgen Smart Feedback device, HIPERFACE DSL or EnDat 2.2 digital encoders. Dual cable resolver feedback also available standard along with user-specified feedback devices available through co-engineering. Available options support functional safety applications. For low voltage motors a standard commutating encoder option is available.

Standard Voltage Feedback Options Low Voltage Feedback Options

Reduce Cabling

Single hybrid combined power and feedback cables for Kollmorgen Smart Feedback device, HIPERFACE DSL or EnDat 2.2 digital encoders. Dual independent power and resolver feedback cables are also available standard along with other optional configurations. Kollmorgen 2G cables provide the correct design for use in Kollmorgen 2G Systems that incorporate functional safety rated feedback devices.

2G Cables Selection Guide

Features

Standard winding choices for 120 Vac to 480 Vac operation, and low voltage winding choices for 24 to 96 volts (Vdc or Vac) with various speed/torque performance curves
Feedback options to match application requirements and drive selection
- Kollmorgen SFD3
- HIPERFACE DSL (supports functional safety applications)
- EnDat 2.2 (supports functional safety applications)
- Resolver
- Commutating Encoder is available as a standard option for low voltage motors
- Customer-specified feedback devices available through co-engineering
Connector options (as appropriate for feedback type and motor size)
- SpeedTec (standard for single or dual cable designs)
- ytec (dual connector with single insertion at motor for size 2 motors)
System cable options for use with Kollmorgen AKD2G servo drives and other AKD family servo drives
- Single cable SFD3/HIPERFACE DSL/EnDat 2.2
- Two-cable variant for resolver including ytec connector motors and commutating encoder

Standard IP54 rating, IP65 with optional shaft seal. Other optional ratings available through co-engineering
International standard mount with choice of smooth shaft or closed keyway
- Other mount and shaft options available through co-engineering
24VDC mechanical holding brake option
Thermal sensor options for maximum motor protection and servo drive compatibility
Low friction shaft seal options for both wet and dry running applications

Get a Quote

Specifications

AKM2G Performance Data (by frame size)

			AKM2G-2x				AKM2G-3x			AKM2G-4x
Parameter	Sym	Unit	1	2	3	4	1	2	3	1	2	3	4
Continuous Torque at Stall	T_c	Nm	0.65	1.12	1.51	1.85	1.70	2.90	3.86	2.87	5.12	6.98	8.51
Rated Speed	N_rtd	rpm	8000	8000	8000	8000	8000	7600	8000	6000	6000	6000	5400
Rotor Inertia	J_n	kg-cm²	0.0930	0.1549	0.2169	0.2789	0.4264	0.8130	1.200	0.774	1.36	1.95	2.53

			AKM2G-5x				AKM2G-6x				AKM2G-7x
Parameter	Sym	Unit	1	2	3	4	2	3	4	5	1	2	3	4
Continuous Torque at Stall	T_c	Nm	6.83	12.0	16.2	20.1	15.3	21.5	27.0	32.7	23.0	41.1	57.8	72.1
Rated Speed	N_rtd	rpm	6000	5600	5100	4800	5000	4500	4200	3800	4900	3400	3200	3000
Rotor Inertia	J_n	kg-cm²	2.52	4.58	6.64	8.70	9.10	13.0	16.9	20.8	25.9	46.8	67.7	88.6

Values shown are representative of each model. For exact information, refer to the Selection Guide, Installation manual, or Motioneering and/or our curve generator tools.

Standard Voltage Selection Guide Low Voltage Selection Guide Design Tools

AKM2G Dimensional Overview

AKM2G Series	Flange IEC	Length by Stacks					A	Ø B	C	Ø D	Ø E	F	Ø G
AKM2G Series	Flange IEC	1	2	3	4	5	A	Ø B	C	Ø D	Ø E	F	Ø G
AKM2G2x	58	111	130	149	168	-	23.0	11.0	2.50	63.0	5.5	M4 DIN 332	40.0
AKM2G3x	72	121	153	184	-	-	30.0	14.0	2.50	75.0	5.5	M5 DIN 332	60.0
AKM2G4x	88	125	151	177	203	-	40.0	19.0	3.00	100.0	6.6	M6 DIN 332	80.0
AKM2G5x	114	143	172	202	231	-	50.0	24.0	3.00	130.0	9.0	M8 DIN 332	110.0
AKM2G6x	142	-	168	190	212	234	58.0	32.0	3.50	165.0	10.19	M12 DIN 332	130.0
AKM2G7x	192	169	203	237	271	-	80.0	38.0	4.00	215.0	13.4	M12 DIN 332	180.0

All values in millimeters. Nominal dimensions shown for resolver and Smart Feedback SFD3 motors of less than 20 amps continuous. See individual motor schematics for tolerances and complete dimensions including other feedbacks and motors rated greater than 20 amps continuous.

2D/3D Models Standard Voltage Selection Guide Low Voltage Selection Guide

Servo Motor Product Selector

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Design Your Motion Solution

Performance Curve Generator Tools

Adjust winding factor, ambient temperature, drive current, and more to generate speed/torque curves for frameless & housed motors.

Learn More >>

Product Selectors

Enter your performance and sizing requirements to find the right Kollmorgen products for your application.

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Motioneering

Are you unsure of the required torque and speed even though you know the application requirements? Use Motioneering to determine the scale of the mechanical project and find the combination of motors and drive systems that match the requirements.

Learn More >>

AKM2G Application Successes

Extending Design Life and Performance

Kollmorgen Solution Catapults PET Bottle Blow Molding Machine to Top Producer in the World

IMS Gear - Servo drives simulate road behavior

Consult an Expert

Count on Kollmorgen support to help you design and build a successful machine and keep it reliably productive, anywhere in the world. Our co-engineering experts will work with you to tailor a perfect-fit solution for your motion requirements.

Talk to a motion expert

For more than 100 years, Kollmorgen has been creating innovative solutions that bring big ideas to reality, keep the world safer and improve lives. Our history of reliability is unsurpassed, and our solutions are supported through engineering centers of excellence and customer service in all major regions of the world.

See the Kollmorgen global footprint | Discover the Kollmorgen difference

Media & Downloads

Manuals Literature 2D/3D Interactive Drawings Support

Documentation
Title	Language(s)	Date	Size
AKM2G Installation Manual EN DE IT ES FR RU (REV E)	English, French, German, Italian, Russian, Spanish	31 Aug 2020	9.07 MB	Copy URL
AKM2G Performance Curves	English	27 Jun 2019	8.45 MB	Copy URL

Certifications
Title	Language(s)	Date	Size
AKM2G EU Declaration of Conformity	English	20 Jun 2020	227.31 KB	Copy URL
AKM2G UL Certificate of Compliance	English	18 Dec 2019	354.8 KB	Copy URL
EAC Certification for Motors	English, Russian	09 Dec 2020	98.97 KB	Copy URL
Kollmorgen CE Technical Notice - Servo and Stepper Motors Efficiency	English	26 Aug 2020	389.92 KB	Copy URL

Datasheet
Title	Language(s)	Date	Size
Kollmorgen 2G Cable Guide	English	14 Mar 2019		Copy URL

Brochure
Title	Language(s)	Date	Size
2G Motion System Brochure	English	29 Jan 2020	1.58 MB	Copy URL

Catalog
Title	Language(s)	Date	Size
AKM2G Low Voltage Selection Guide	English	13 Apr 2020	5.15 MB	Copy URL
AKM2G Servo Motor Selection Guide	English	30 Mar 2019	9.06 MB	Copy URL
Kollmorgen 2G Cable Guide	English	14 Mar 2019	21.67 MB	Copy URL
Kollmorgen Automation and Motion Control	English	14 Jun 2021	15.53 MB	Copy URL

These 3D models are intended to guide your design activities and may be used as reference information. Be sure to consult a Kollmorgen expert to ensure you have the most current and accurate information for critical aspects of design work

Drawings
Title	Language(s)	Date	Size
AKM2G 3D Models & 2D Dimensions	English	31 Jul 2018		Copy URL

Article
AKD2G Standard Voltage and Low Voltage Winding Thermal Sensor Options	Standard Option 0 is a PT1000 linear device with an avalanche PTC in series. So you get some linear ohms vs temperature curve until the motor temperature approaches 155C, then the resistance...
PxMM Fault Handling For The AKD2G Drive	Introduction Sample KAS Fault Handling code and project has been created for KAS applications that utilize the AKD2G drive. Differences in parameter names and functionality between the AKD...
KAS v3.04 is now available!!	New Features TCP/IP Function Blocks BBH FSoE Master + SafePLC with KAS-IDE and AKD2G w/ SMM: BBH SCU-1-EC support (FSoE Master device and ESI file available from BBH) Map read-only...
KAS v3.03 is now available!!	New Features FailSafe over EtherCAT (FSoE) "Black Channel" Communication AKD2G Drive Integration: Backup/Restore AKD2G with SMM options #2 (basic) and #3 (advanced) Robotic...
Ingress Protection of Servo Motors	[toc] Sealing is an important design tool used to prolong the life of motors against harsh environments containing dust or liquid contaminants. There are arguably an unlimited number of...

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