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
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

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 & AKM Low Voltage DC Servo Motors

AKM2G and AKM Low Voltage servo motors provide the same dynamic performance of our standard motors, but with winding optimized for 24–96 Vdc bus input. They are ideal for battery-operated applications such as mobile robots, portable medical equipment, AGVs and more.

Selection Guide

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Product available worldwide

Kollmorgen AKM1 DC Servo Motor Low Voltage Size Comparison_l

Features

Derived from existing AKM2G and AKM electromagnetics, these servo motors incorporate low voltage windings that have been hand-selected by Kollmorgen engineering to deliver optimized performance for axes with low voltage power input requirements.

AKM2G and AKM Low Voltage variants are available with a wide range of configurable options and features—plus OEM-specific co-engineered solutions—as offered in our larger AKM2G and AKM product portfolios.

Features:

AKM2G variants rated for 24–96 Vdc: One design size with stall torque range 1.73 to 3.83 Nm, and motor speeds up to 8000 rpm.
AKM variants rated for 24–48 Vdc: Three design sizes with stall torque range 0.18 to 1.25 Nm, and motor speeds up to 4500 rpm.
CE Compliant / UL-Recognized (U.S & Canada)
Identical motor construction, design features and benefits as base AKM2G and AKM servo motor series.

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Specifications

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.

AKM2G-2x Specifications

Parameter	Sym	Unit	AKM2G-21	AKM2G-22	AKM2G-23	AKM2G-24
Max Continuous Torque (Stall)¹	T_cs	Nm	0.642	1.12	1.50	1.82
Max Peak Torque	Tp	Nm	1.79	3.35	4.73	5.97
Max Rated Speed	N_rtd	rpm	8000	8000	8000	8000
Max Rated Power (speed)	P_rtd	kW	0.452	0.791	0.989	1.085
Rotor Inertia (includes Resolver feedback)²	J_m	kg-cm²	0.093	0.155	0.217	0.279
Weight without brake³	W	kg	1.1	1.4	1.7	2.0

¹Motor winding temperature rise, ∆T = 100° C, at 40° C ambient
²Add parking brake if applicable for total inertia
³Brake motor adds 0.45 kg

AKM2G-3x Specifications

Parameter	Sym	Unit	AKM2G-31	AKM2G-32	AKM2G-33
Max Continuous Torque (Stall)¹	T_cs	Nm	1.73	2.89	3.83
Max Peak Torque	Tp	Nm	6.14	10.7	14.6
Max Rated Speed	N_rtd	rpm	7800	6400	4700
Max Rated Power (speed)	P_rtd	kW	1.15	1.51	1.50
Rotor Inertia (includes Resolver feedback)²	J_m	kg-cm²	0.426	0.813	1.2
Weight without brake³	W	kg	1.8	2.5	3.3

¹Motor winding temperature rise, ∆T = 100° C, at 40° C ambient
²Add parking brake if applicable for total inertia
³Brake motor adds 0.45 kg

AKM2G-4x Specifications

Parameter	Sym	Unit	AKM2G-41	AKM2G-42	AKM2G-43	AKM2G-44
Max Continuous Torque (Stall)¹	T_cs	Nm	2.91	5.17	7.07	8.6
Max Peak Torque	Tp	Nm	7.28	14.5	21.2	27.1
Max Rated Speed	N_rtd	rpm	5000	2800	1900	1600
Max Rated Power (speed)	P_rtd	kW	1.31	1.39	1.32	1.36
Rotor Inertia (includes Resolver feedback)²	J_m	kg-cm²	0.774	1.36	1.95	2.53
Weight without brake³	W	kg	2.90	3.86	4.81	5.76

¹Motor winding temperature rise, ∆T = 100° C, at 40° C ambient
²Add parking brake if applicable for total inertia
³Brake motor adds 0.45 kg

Selection Guide Design Tools

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.

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We Can Also Fully Customize

Don’t see what you need? We’ll work with you to customize a perfect fit for your application, with rapid prototyping and ramp-up to full-rate production. Get in touch and let us know what you are looking for.

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Success Stories

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Opteq - Mobile Robots - Self-driving systems for internal material flow

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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.

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Media & Downloads

Manuals Literature 2D/3D Interactive Drawings Support Certifications

Documentation
Title	Language(s)	Date	Size
AKM Instruction Manual EN DE IT ES FR RU (REV 06/2021)	English, French, German, Italian, Russian, Spanish	01 Jul 2021	8.5 MB	Copy URL
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

Application Notes
Title	Language(s)	Date	Size
AKM2G 低压伺服电机选型指南	Chinese, Simplified	06 Jan 2020	8.96 MB	Copy URL

Datasheet
Title	Language(s)	Date	Size
AKM2G 低压电机Flyer	Chinese, Simplified	04 Mar 2020	497.74 KB	Copy URL
Kollmorgen 2G Cable Guide	English	14 Mar 2019		Copy URL

Catalog
Title	Language(s)	Date	Size
AKM2G Low Voltage Selection Guide	English	01 Feb 2022	7.19 MB	Copy URL
Kollmorgen Automation and Motion Control	English	14 Jun 2021	15.53 MB	Copy URL

Brochure
Title	Language(s)	Date	Size
Kollmorgen AKM DC Servo Motor Low Voltage Flyer	English	26 Apr 2017	537.91 KB	Copy URL
Kollmorgen AKM Low Voltage Winding Data and Performance Curves	English	18 Dec 2019	1.13 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
AKM 3D Models & 2D Dimensions	English	05 Jun 2018		Copy URL

Article
Resolving Servo Feedback Choices	This PowerPoint presentation explains the differences between different types of servo motor feedback devices, including: The differences between absolute and incremental devices. The...
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...
DESINA Farbkodierung	DESINA steht für DE zentralisierte und S tandardisierte IN st A llationstechnik für Werkzeugmaschinen und Produktionssysteme.DESINA beschreibt die...
Conflict Minerals	Kollmorgen is committed to sourcing components and materials from companies that share our values regarding respect for human rights, integrity and environmental responsibility. Kollmorgen is also...
CCC Marking	The CCC-Certificate is the Chinese compulsory certificate for different groups of products since May 2002, in particular, consumer goods, electronic products, and automotive products. Due to the...

Pages

Title	Language(s)	Date	Size
AKM EU RoHS Declaration (RoHS10W)	English	09 Nov 2021	279.41 KB	Copy URL
AKM REACH SVHC Certificate of Compliance	English	01 Feb 2022	279.3 KB	Copy URL
CEL China Efficiency Labelling for Servo and Stepper Motors	English	17 Dec 2021	139.72 KB	Copy URL
EU-Konformitätserklärung AKM	German	19 Apr 2016	126.62 KB	Copy URL
Kollmorgen CE Technical Notice - Servo and Stepper Motors Efficiency	English	26 Aug 2020	389.92 KB	Copy URL

AKM2G & AKM Low Voltage DC Servo Motors

Features

Features

Specifications