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Altra Industrial Motion
Altra Industrial Motion
from Wikipedia
A Marland Clutch installed at the coal loading facility in Port Hedland, WA, Australia, together with two employees from Altra's sales and support office in Castle Hill, NSW.

Key Information

Warner Electric's United States facility and grounds in Columbia City, Indiana.
A Warner Electric elevator brake installed on a Japanese traction motor.

Altra Industrial Motion Corp. is an American manufacturer of mechanical power transmission products – brakes, clutches, couplings, and the like.[1] The company is headquartered in Braintree, Massachusetts.

While the products sound automotive to the layman, in fact most Altra products are used on industrial machinery, such as fail-safe brakes for elevators and forklifts, gearboxes on conveyors, heavy duty brakes on mining equipment, clutches for beverage capping equipment, etc.

Altra is the parent company of several power transmission industry brands, including: Ameridrives, Boston Gear, Warner Electric, TB Wood's, Stieber Clutch, Twiflex, Matrix International and Wichita Clutch.[2]

On March 27, 2023, the company was acquired by Regal Rexnord Corp.[3]

History

[edit]

The company was founded in 2004 through the acquisition of the Colfax Power Transmission Group (CPTG) and Kilian Manufacturing by private equity firm Genstar Capital. Which, at the time, consisted of several brands, including Ameridrives, Boston Gear, Formsprag, Marland, Nuttall/Delroyd, Stieber, Warner Electric and Wichita Clutch.

Following the foundation, Altra has made several strategic acquisitions, including TB Wood's, Hay Hall (Bibby, Matrix, Twiflex, Huco, and Inertia Dynamics), Svendborg Brakes, Bauer Gear Motor, Guardian Couplings, Lamiflex Couplings, and Bear Linear (now Warner Linear), Kollmorgen Corp, Thomson Linear, Portescap, Jacobs Vehicle Systems.

While Altra is a relatively young company, the brands have been in existence for many, many years.[4] The brands and the year they were founded are as follows:

TB Wood's (1857)
Boston Gear (1877)
Svendborg Brakes (1884)
Nuttall Gear (1897)
Bibby Transmissions (1919)
Kilian Manufacturing (1922)
Delroyd Worm Gear (1922)
Warner Electric (1927)
Stromag (1932)
Bauer Gear Motor (1927, de)
Ameridrives (1928)
Industrial Clutch (1930)
Marland Clutch (1931)
Matrix International (1939)
Stieber Clutch (1944)
Twiflex Limited (1946)
Formsprag Clutch (1946)
Guardian (1947)
Centric (1948)
Wichita Clutc (1954)
Huco Engineering (1965)
Inertia Dynamics (1971)
All Power (1986)
Lamiflex (1999)
Bear Linear (2001)

Altra Industrial Motion went public in December, 2006. It trades on the NASDAQ exchange under the symbol AIMC.[5] In 2019, they recorded sales of US$2 billion.

In October 2022, Altra Industrial Motion agreed to be acquired by Regal Rexnord Corp. in a deal worth around $5 billion including debt.[6] The acquisition was completed in March 2023.

Product platforms

[edit]

Altra's broad product range can be divided into Seven distinct divisions:[4][7]

  • Electric Clutches & Brakes (ECB): The Electric Clutches & Brakes Division consists of four brands that are grouped for maximum engineering and sales efficiency. Warner Electric, Matrix International, Inertia Dynamics and Warner Linear design and manufacture braking and positioning systems that are utilized in global markets including material handling, packaging machinery, food & beverage, elevator & escalator, medical, turf & garden, off-highway, forklift, marine and agriculture.
  • Couplings, Clutches & Brakes (CCB): Altra's coupling, heavy-duty clutch and brake, overrunning clutch and belted drive brands are grouped together to allow for extensive cross-brand engineering collaboration. TB Wood's, Ameridrives, Bibby Turboflex, Lamiflex, Ameridrives Power Transmission, and Huco, together with Wichita Clutch, Twiflex Limited, Svendborg Brakes, Industrial Clutch, Formsprag Clutch, Marland Clutch and Stieber Clutch provide drivetrain component solutions for global industries including energy, metals, mining, marine, oil & gas, food processing, pulp & paper, packaging, aerospace & defense, wastewater, concrete, and material handling.
  • Gearing: Altra's gear drive, gear motor and engineered bearing brands include Boston Gear, Nuttall Gear, Delroyd Worm Gear, Bauer Gear Motor, and Kilian Manufacturing. These brands offer energy-efficient gearing and bearing solutions designed for industrial applications. Global key markets include metals, food & beverage, energy, wastewater, turf & garden, pulp & paper, textile, concrete, oil & gas, material handling and aerospace.
  • Kollmorgen:
  • Thomson:
  • Jacobs Vehicle Systems:
  • Portescap:

Production locations

[edit]

Altra operates production facilities in the United States, Europe, and Asia. Since the company's founding in 2004, many of the factories produce more than one brand.[8]

Notes

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
Altra Industrial Motion Corp. is a multinational , , and marketer of a wide range of electromechanical and products, including clutches, , couplings, gear drives, precision , linear systems, and solutions. Headquartered in , the company operates over 50 manufacturing facilities worldwide and employs approximately 10,000 people. Formed in 2004 through the acquisition of Colfax Corporation's Power Transmission Group by Genstar Capital, Altra grew through acquisitions of specialized brands in and technologies. The company's portfolio is organized into two main segments: Power Transmission Technologies, which includes products like overrunning clutches, torque limiters, and flexible couplings under brands such as Ameridrives, Bibby Turboflex, and Formsprag Clutch; and Automation & Specialty, encompassing servo motors, stepper motors, and automated guided vehicles (AGVs) from brands like Kollmorgen and Warner Linear. Altra serves diverse markets, including general industrial applications (19% of revenue), consumer products (12%), food and beverage (8%), and (5%), with approximately 66% of its 2021 net sales of $1.9 billion derived from . In October 2022, Regal Rexnord Corporation announced its acquisition of Altra for $62.00 per share in an all-cash transaction valued at $4.95 billion, which closed in March 2023, integrating Altra as a wholly owned to expand Regal Rexnord's offerings in and . Following the acquisition, Altra has been integrated into Regal Rexnord's operations while maintaining its brand, enhancing global reach and product innovation capabilities to address demanding applications in industries such as , medical devices, and heavy machinery.

Overview

Founding and Corporate Structure

Altra Industrial Motion was founded in by the Genstar Capital, which acquired the Colfax Group from Colfax and merged it with Kilian , a bearings producer recently purchased from The . The company's headquarters are located in , serving as the central administrative hub for strategic oversight, financial management, and global operations coordination. At inception, Altra operated on a relatively modest scale with approximately 2,100 employees as of mid-2005, reflecting the combined workforce from the initial acquisitions, before expanding significantly to around 10,000 employees in later years. Altra was structured as a , with Altra Holdings, Inc. (later renamed Altra Industrial Motion, Inc.) overseeing a portfolio of subsidiaries, including those from the Colfax and Kilian integrations, to facilitate focused of diverse product lines.

Ownership and Financial Overview

Altra Industrial Motion began as a private company under the ownership of Genstar Capital, which formed the entity in 2004 through acquisitions and took it public via an (IPO) on the under the ticker AIMC in December 2006. As a publicly traded company, Altra achieved significant revenue growth, reporting net sales of $1.834 billion in , reflecting expansion through acquisitions and organic development in the sector. In October 2022, announced its agreement to acquire Altra in an all-cash transaction valued at $62 per share, totaling approximately $4.95 billion in and an enterprise value of about $5 billion. The acquisition was completed on March 27, 2023, after which Altra became a wholly owned of and its shares were delisted from the . This integration has strengthened Regal Rexnord's portfolios in automation and power transmission, enabling enhanced offerings in motion control solutions for industrial applications.

History

Formation and Initial Acquisitions

Altra Industrial Motion was established in 2004 under the orchestration of Genstar Capital, a San Francisco-based private equity firm, through the strategic combination of select industrial assets to create a focused platform in mechanical power transmission components. On October 22, 2004, Genstar directed the formation of The Kilian Company to acquire Kilian Manufacturing Corporation from The Timken Company for $8.8 million in equity and $13.0 million in debt, providing an initial foundation in precision bearings. Subsequently, on November 30, 2004, Altra Holdings, Inc.—formed at Genstar's direction—acquired Power Transmission Holding LLC (PTH) from Colfax Corporation for $180.0 million, with Genstar contributing $40.0 million in equity to finance the transaction. This acquisition brought in PTH's portfolio, which included established manufacturers such as Warner Electric, specializing in electromagnetic clutches and brakes, and Boston Gear, a leader in gearing products like speed reducers and worm gears. The early strategic focus centered on consolidating a diverse portfolio of high-quality mechanical components tailored for industrial applications, including couplings, clutches, , and gears, to serve a global market estimated at $29 billion in 2003. Genstar aimed to leverage the complementary strengths of these assets—Kilian's bearing expertise alongside PTH's broader transmission offerings—to enhance product breadth and through an existing network of over 3,000 distributors worldwide. No major additional acquisitions occurred in , allowing initial efforts to emphasize operational alignment rather than further expansion. Merging these disparate entities presented initial challenges, including integration risks from combining operations across multiple legacy with varying cultures and systems, as well as managing a high load of $170.1 million incurred to fund the transactions. Competitive pressures in the fragmented sector further complicated early efforts to streamline supply chains and achieve cost efficiencies. However, synergies emerged from shared distribution channels and opportunities among like Warner Electric and Boston Gear, enabling rapid revenue growth— net sales reached $343.3 million for 2004—and positioning Altra for scalable industrial applications in sectors such as and .

Public Listing and Expansion

Altra Industrial Motion Corp. completed its on December 14, 2006, listing on the Global Market under the AIMC. The IPO raised approximately $135 million in net proceeds, which the company directed toward debt repayment and funding further acquisitions and operational expansion. Following the public listing, Altra pursued a series of strategic acquisitions to broaden its product capabilities in . In December 2013, it acquired Svendborg Brakes A/S, a Danish manufacturer of industrial , enhancing its and portfolio for applications in heavy-duty industries. This move strengthened Altra's offerings in high-performance braking systems. In October 2018, Altra completed a major transaction combining with Corporation's Automation & Specialty platform, acquiring Kollmorgen, Thomson, Portescap, and Jacobs Vehicle Systems for approximately $2.86 billion. The inclusion of Jacobs Vehicle Systems specifically added advanced technologies, expanding Altra's reach into and off-highway markets. The company's revenue experienced robust growth during this period, fueled by these acquisitions and organic expansion. Net sales rose from $876.7 million in 2017 to $1.175 billion in 2018, reflecting partial-year contributions from the businesses. By 2019, annual net sales reached $1.834 billion, approaching $2 billion on a basis when adjusting for the full-year impact of prior acquisitions, with diversification into ($931 million from the A&S segment) and aerospace-related applications driving much of the increase. Strategically, Altra shifted focus toward greater global presence and technological innovation in motion control from 2006 to 2022. Post-IPO, it expanded manufacturing to 51 facilities across 16 countries, leveraging acquisitions like Svendborg and the Fortive platform to penetrate international markets in Europe and Asia. Innovations emphasized integration of IoT-enabled solutions and Industry 4.0 advancements in power transmission, supported by R&D investments that enhanced efficiency in automation and specialty components. These efforts positioned Altra as a diversified leader in engineered motion solutions prior to its eventual combination with Regal Rexnord.

Acquisition by Regal Rexnord

On October 27, 2022, Regal Rexnord Corporation announced its agreement to acquire Altra Industrial Motion Corp. in an all-cash transaction valued at $62 per share, representing an enterprise value of approximately $4.95 billion. The deal was driven by strategic motivations to bolster Regal Rexnord's capabilities in automation, power transmission, and industrial motion control, while expanding synergies across complementary global end-markets such as mining and food processing. This acquisition aimed to position the combined entity as a leader in motion control solutions, with enhanced exposure to high-growth sectors exceeding 35% of its portfolio. The transaction progressed through standard regulatory reviews, securing necessary approvals without significant antitrust obstacles, and received shareholder approval at a special meeting on January 17, 2023. It was completed on March 27, 2023, marking the full integration of Altra into Regal Rexnord's operations. Upon closing, Altra's common stock ceased trading on the NASDAQ Global Select Market under the ticker symbol AIMC, and the company was delisted from the exchange. Post-acquisition, initiated integration efforts with a dedicated team to combine operations, leveraging established tools for and . These steps focused on realizing synergies projected at $160 million annually by 2026, alongside opportunities for cross-marketing and operational alignment to drive long-term value. The merger was expected to be accretive in the first year and achieve a return on invested capital exceeding 10% within five years.

Products and Technologies

Core Product Platforms

Altra Industrial Motion's core product platforms center on mechanical components, including clutches and designed for precise control in industrial machinery. These devices engage or disengage through friction-based mechanisms, enabling smooth starts, stops, and load handling in demanding environments. Clutches facilitate the connection of rotating components to transmit , while provide controlled deceleration or holding functions to prevent unintended motion, both emphasizing for high-cycle operations and precision to minimize and loss. Couplings form another foundational platform, serving to connect rotating shafts in power transfer systems while accommodating misalignment, axial movement, and vibrational stresses. These components ensure efficient transmission without excessive backlash, supporting reliable operation in misaligned setups common in industrial drivetrains. Available in flexible and rigid variants, couplings absorb shocks and protect connected equipment from overloads, enhancing system longevity in continuous-duty applications. Gearing solutions constitute a key platform, encompassing helical, worm, and planetary gears engineered for speed reduction and torque amplification in compact configurations. Helical gears provide smooth, quiet operation with high efficiency for parallel shaft arrangements, worm gears offer high reduction ratios and self-locking capabilities for perpendicular drives, and planetary gears deliver high torque density in coaxial setups for space-constrained machinery. These solutions prioritize precision tooth profiles to reduce noise and vibration, ensuring consistent performance under variable loads. Overrunning clutches and electromagnetic devices extend the platforms for specialized , allowing unidirectional rotation or electrically actuated engagement for dynamic applications. Overrunning clutches permit freewheeling in one direction while locking in the other, providing backstopping to prevent reverse motion, whereas electromagnetic devices enable rapid, precise activation via solenoids for tensioning or . These components focus on responsive control and reliability, integrating seamlessly into automated systems. These platforms find broad applications across sectors such as elevators, equipment, and , where durability withstands harsh conditions like dust, moisture, and heavy loads, and precision ensures operational and . In elevators, and clutches provide emergency stopping and smooth acceleration for passenger . In , heavy-duty components handle extreme in conveyors and crushers for reliable material transport. utilizes washdown-compatible gears and couplings for hygienic, precise motion in packaging and mixing lines.

Key Brands and Divisions

Altra Industrial Motion's portfolio encompasses a range of specialized brands and divisions focused on , , and technologies, each contributing unique innovations to industrial applications. Warner Electric serves as a leader in electromagnetic clutches and brakes, offering the broadest selection of industrial clutches, brakes, controls, and web tension systems from a single manufacturer. In 2023, following the acquisition by , legacy brands in the Electric Clutch and Brake (ECB) division, such as Matrix International and Inertia Dynamics, were consolidated under Warner Electric to streamline global branding. The brand utilizes and manufacturing technologies to produce long-life, user-friendly products that enhance accuracy and reliability in automation systems. Boston Gear specializes in enclosed gearing solutions for industrial drives, providing speed reducers, gearing components, drivetrain elements, enclosed gear drives, custom speed reducers, AC/DC motors, and DC drives. This division emphasizes robust, efficient designs suitable for demanding needs, integrating seamlessly with broader platforms. Similarly, TB Wood’s concentrates on belt drives and sheaves for , designing and manufacturing industrial couplings such as elastomeric, disc, grid, and jaw types, alongside V-belt sheaves and belted drive solutions. Established in , the brand is a global leader in these components, prioritizing durability and misalignment tolerance in mechanical systems. In motion control, Kollmorgen delivers advanced systems including servo motors and drives, positioning itself as a specialist in proprietary products for diverse sectors. The division is structured into three key areas—Industrial , and Defense, and Automated Guided Vehicles—leveraging deep expertise in electromagnetic theory and control to enable precise, high-performance . Complementing this, Thomson focuses on components, offering shafting, linear ball bushing bearings, roundrail guide systems, profile rail systems, and ball screws as part of integrated solutions that combine control, drive, motor, and elements. Portescap excels in precision miniature motors, providing brushless DC, , and other motor technologies for performance-critical applications in medical devices, industrial , and , where compact, high-efficiency designs are essential. Jacobs Vehicle Systems specialized in engine braking technologies for heavy-duty s, supplying innovations in , cylinder deactivation, start-stop systems, and thermal management to improve and in commercial applications. This division played a niche role in systems, integrating advanced solutions until its divestiture in 2022. Each of these brands and divisions links directly to Altra's core product platforms, driving innovations in targeted markets through specialized engineering.

Operations

Manufacturing Facilities

Altra Industrial Motion maintains over 50 manufacturing facilities worldwide, enabling the production of its core and components, including clutches, brakes, couplings, and gearing systems. These sites are distributed across key regions to optimize efficiency, support localized assembly, and ensure compliance with international quality standards. The facilities emphasize , allowing the company to control critical stages of design, fabrication, and testing for high-precision parts, which enhances product reliability and reduces lead times. In the United States, primary manufacturing operations include the Warner Electric facility in South Beloit, , which specializes in the assembly and testing of electromagnetic clutches and brakes for industrial applications. This site leverages advanced engineering processes to produce durable components used in sectors like and . The in Braintree, Massachusetts, integrates administrative oversight with select production activities, supporting overall U.S.-based coordination. European facilities focus on specialized production, such as the Bauer Gear Motor plant in Esslingen, , dedicated to gearing and gear motor . This location employs state-of-the-art assembly techniques to deliver high-torque solutions for heavy-duty applications. Additional sites in the handle clutch production, contributing to the region's emphasis on for European markets. In , cost-effective supports component production for global distribution, with facilities in , such as the couplings plant in , enabling shorter lead times and technical support for regional customers. In , the operation in , , focuses on assembling couplings and related parts, leveraging local expertise to meet demand in emerging markets. These Asian sites play a vital role in scaling production while maintaining quality through integrated processes. Across all facilities, approximately 10,000 employees drive operations, with a strong focus on and to uphold Altra's standards post its 2023 integration into .

Global Market Presence

Altra Industrial Motion maintains a diversified global base, with approximately 56% derived from , 29% from , and 15% from the region and rest of the world as of 2019. By 2022, this distribution had shifted slightly to 54% from , 29% from , and 17% from and other regions, reflecting ongoing growth in emerging markets such as through expanded operations and customer demand. The company's key end-markets span industrial , and , and beverage processing, , and transportation, providing broad exposure to high-growth sectors. Industrial represents a significant portion of sales, with the pro forma & Motion Control segment—incorporating Altra—anticipated to derive at least 70% of its revenue from such markets following the 2023 acquisition. Aftermarket replacement demand accounts for about 35% of overall revenues, underscoring the durability of these market positions. Following its acquisition by in March 2023, Altra benefited from enhanced access to global supply chains via shared distribution channels and complementary product integration, bolstering combined in components. This integration expanded Altra's reach into new customer segments and geographies, particularly in and industrial applications with over 35% exposure to secular growth markets. Altra serves customers in over 70 countries through a robust and distribution network, including direct supported by more than 500 personnel, as well as partnerships with industry-leading distributors. In alignment with global industrial trends toward , the company emphasizes energy-efficient products, with approximately 60% of its offerings enabling applications for end users, such as high-efficiency motors and precision motion controls. These efforts, detailed in Altra's inaugural 2022 Sustainability Report, focus on to reduce environmental impact while supporting efficient power conversion across international operations.

References

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