Junker Group
Corporate brand
UnclaimedGerman industrial group specializing in grinding technology and industrial air-cleaning systems.
Last updated August 24, 2026
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Overview
Junker Group is a German industrial group built around the JUNKER grinding-machine business and the LTA and ZEMA brands. Its principal activities are the development and manufacture of machines for grinding with cubic boron nitride (CBN) and corundum abrasives, together with filtration and industrial air-purification equipment. The group serves manufacturing industries in which precision machining, process reliability, automation and control of airborne contaminants are important, including automotive and component production. The business originated in 1962, when Erwin Junker established Erwin Junker Maschinen- und Apparatebau. Early development focused on automated grinding equipment. The company later expanded its commercial reach, opening sales offices in Germany and the United States in 1977. In 1980, it added an adjacent industrial technology activity through the establishment of LTA Lufttechnik GmbH in Achern, a manufacturer of filtration systems. The group’s international structure took shape in 1992, when Erwin Junker acquired three Czech grinding-machine manufacturers. These acquisitions formed the basis of the JUNKER Group’s Czech production and engineering presence. Technology development has been central to the brand’s identity. JUNKER introduced a fully automatic flute-grinding machine for thread taps in the early period of its history and later helped develop high-speed CBN grinding for demanding production applications. The company’s QUICKPOINT process, introduced in 1984, enabled multiple contours to be machined in a single clamping operation by moving the grinding wheel along a programmed path. This approach supported flexible, high-precision machining across materials ranging from plastics to carbide. In 2003, JUNKER launched the JUCRANK machine for complete crankshaft machining in a single clamping setup, followed in 2008 by the JUCENTER, which combined two machining stations under one enclosure. The group continued its geographic expansion during the 2000s and 2010s. A Shanghai branch was established in 2003, Czech grinding operations were consolidated under Erwin Junker Grinding Technology a.s. in Mělník in 2007, and sales and service offices followed in India, Brazil, Russia and Mexico. ZEMA Zselics Ltda., a Brazilian grinding-machine manufacturer, joined the group in 2015. The organization also invested in workforce development: the Erwin Junker Technical Academy opened in Holice, Czech Republic, in 2015 to address the shortage of technically trained workers, with its first two-year cohort completing training in 2017. The group established a manufacturer foundation in 2016 and expanded LTA’s international footprint with operations in the United States and the Czech Republic. Junker Group’s business model combines machine production with services, technology and equipment. In addition to its German headquarters, production sites are located in several Czech towns, while sales and service coverage extends across Europe, Asia and the Americas. The group’s customer recognition has included quality and supplier awards from automotive and industrial companies, reflecting its role as an equipment supplier rather than a consumer-facing brand. Its present positioning is that of a specialized, internationally operating engineering group focused on high-productivity grinding, production automation and industrial air cleaning.
History
Erwin Junker founded Erwin Junker Maschinen- und Apparatebau in 1962, establishing the industrial business that later became the JUNKER Group. The company’s early work centered on grinding-machine engineering and automation. One of its early developments was a fully automatic flute-grinding machine for thread taps, establishing a pattern of combining specialized machine design with automated production processes. The company began building an international sales structure in 1977, when it opened sales offices in Germany and the United States. In 1980, it broadened its industrial scope through the creation of LTA Lufttechnik GmbH in Achern, Germany. LTA specialized in filtration systems and later became the group’s industrial air-cleaning business. This combination of grinding technology and environmental equipment became a defining feature of the group’s portfolio. A major structural turning point came in 1992, when Erwin Junker acquired three Czech grinding-machine manufacturers. These companies formed the foundation of the later JUNKER Group. In 1995, the group opened a Technology Center in Nordrach, reinforcing its commitment to research, engineering and Germany as a technology base. LTA Lufttechnik also became part of the group that year. The Czech operations were later consolidated in 2007 as Erwin Junker Grinding Technology a.s., headquartered in Mělník, while additional Czech production locations were developed in Holice, Čtyřkoly and Středokluky. JUNKER’s technology development was particularly significant in automotive and high-volume component manufacturing. In 1978, it introduced CBN high-speed grinding machines. In 1984, the company developed the QUICKPOINT process, a point-grinding method that allowed complex contours to be produced in one clamping operation. The approach used computer-controlled movement of the grinding wheel and could be applied to a broad range of materials. In 2003, the JUCRANK machine extended CBN high-speed grinding to complete crankshaft machining in a single setup. The JUCENTER, introduced in 2008, combined two machining stations and additional processing possibilities within one machine enclosure. The group expanded its international service network during the 2000s and 2010s. After Shanghai in 2003, offices were opened in India in 2009, Brazil in 2011, Russia in 2012 and Mexico in 2014. ZEMA Zselics Ltda., a Brazilian manufacturer of grinding machines, joined the group in 2015. LTA’s international business also expanded: LTA Industrial Air Cleaning was established in the United States in 2016, followed by LTA Industrial Air Cleaning Systems s.r.o. in the Czech Republic in 2017. Training and institutional development became additional priorities. The Erwin Junker Technical Academy opened in Holice in 2015 in response to a shortage of technically qualified workers. Its facilities included the Erwin Junker Hotel and Quickpoint Restaurant, and its first two-year class graduated in 2017. In 2016, the Erwin Junker manufacturer foundation was established. The group’s business areas now cover machines, services, technology and equipment. Its manufacturing and service footprint spans Germany, the Czech Republic, the Americas, Asia and other international markets. JUNKER, LTA and ZEMA remain the principal brands associated with the group.
- 2017
Czech LTA company established
[1]LTA Industrial Air Cleaning Systems s.r.o. was established in the Czech Republic.
- 2016
Manufacturer foundation and US LTA business established
[1]The Erwin Junker manufacturer foundation was established, and LTA Industrial Air Cleaning was founded in the United States.
- 2015
Technical Academy and ZEMA expansion
[1]The Erwin Junker Technical Academy opened in Holice, and Brazilian grinding-machine manufacturer ZEMA Zselics joined the group.
- 2008
JUCENTER introduced
[1]The JUCENTER combined two machining stations and additional processing options in one enclosed system.
- 2007
Czech grinding operations consolidated
[1]The Czech locations were merged as Erwin Junker Grinding Technology a.s., headquartered in Mělník.
- 2003
JUCRANK launched and Shanghai office established
[1]JUNKER launched the JUCRANK machine for complete crankshaft machining and opened a branch office in Shanghai.
- 1995
Technology Center opens in Nordrach
[1]The group opened a Technology Center in Nordrach and incorporated LTA Lufttechnik into the group.
- 1992
Czech manufacturers acquired
[1]Erwin Junker acquired three Czech grinding-machine manufacturers, creating the foundation of the group structure.
- 1984
QUICKPOINT process developed
[1]JUNKER introduced its QUICKPOINT point-grinding technology for machining multiple contours in one clamping operation.
- 1980
LTA Lufttechnik is founded
[1]LTA Lufttechnik GmbH was established in Achern to manufacture filtration systems.
Products and positioning
A specialized B2B engineering group for high-precision grinding, automated machining and industrial air purification, with a strong orientation toward automotive and other demanding manufacturing applications.
Grinding technology · 1984
QUICKPOINT
QUICKPOINT is JUNKER’s point-grinding process, introduced in 1984. It uses controlled movement of a grinding wheel along a programmed contour, allowing several different geometries to be machined in a single clamping operation. The process is associated with flexible, high-precision production across materials including plastics, metals and carbide, and has been used in demanding industrial and automotive applications.
Crankshaft grinding machines · 2003
JUCRANK
JUCRANK is a CBN high-speed grinding-machine concept launched in 2003 for complete crankshaft machining in one clamping setup. It is intended for high-productivity manufacturing environments where dimensional consistency, cycle-time control and integration of multiple grinding steps are important.
Integrated grinding systems · 2008
JUCENTER
JUCENTER is a grinding-machine model introduced in 2008. Its design combines two machining stations and additional processing capabilities within a single enclosure, allowing manufacturers to consolidate operations and support automated production workflows.
Industrial filtration and air purification · 1980
LTA industrial air-cleaning systems
LTA develops filtration systems and industrial air-cleaning equipment for manufacturing environments. The business complements the group’s machine-tool activities by addressing airborne particles and process-related contamination in industrial workplaces.
Grinding machines
ZEMA grinding machines
ZEMA is a Brazilian grinding-machine brand that became part of the JUNKER Group in 2015. It broadens the group’s machine portfolio and production presence in South America.
Brand decisions
2015
Add ZEMA to the groupM&ABackground
JUNKER Group continued international expansion in grinding-machine manufacturing and service.
Action taken
Brazilian grinding-machine manufacturer ZEMA Zselics Ltda. became part of the JUNKER Group.
Aftermath
The transaction strengthened the group’s South American manufacturing and market presence.
2015
Establish the Erwin Junker Technical AcademyStrategyBackground
The Czech labor market faced a shortage of technically trained workers.
Action taken
The group opened a technical academy in Holice to provide a two-year training program for qualified workers.
Aftermath
The first cohort completed the program in 2017, creating an institutional route for developing technical skills relevant to the group’s operations.
1992
Acquire three Czech grinding-machine manufacturersM&ABackground
The company sought to expand its grinding-machine capabilities and establish a broader manufacturing base.
Action taken
Erwin Junker acquired three Czech manufacturers, later forming the core of the group’s Czech operations.
Aftermath
The acquisitions led to the development of a major Czech engineering and production network, later consolidated under Erwin Junker Grinding Technology a.s.
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