More than 100 years of company history

The Pleiger company was founded in 1925 and has naturally lived through many social, political, and technological evolutions up to the present day. Here you will find a brief journey through our company history.

1925

Founded by Paul Pleiger

Paul Pleiger founds the company in Sprockhövel (Herzkamp) to manufacture pneumatic tools and fittings for the Ruhr mining industry.

1937-1950

Expansion and entry into hydraulics

Following the early years in the mining sector, Pleiger expands its product portfolio to include hydraulic control systems, cylinders, and valves. Demand from industry and mining leads to steady growth.

1955

Development of Plei-Tech® (polyurethane/cast elastomers)

Pleiger starts the development and production of specialty plastics based on polyurethane. Under the brand name Plei-Tech®, the foundation is laid for today's Pleiger Plastics business unit.

1963

Headquarters in Witten

Due to growing space requirements, Pleiger relocates its headquarters and essential manufacturing capacities to Witten (Im Hammertal), where the company's headquarters remain to this day.

1986

Establishment of Pleiger Far East in Korea

Entry into the Asian market through the founding of Pleiger Far East Co., Ltd. in South Korea. Core areas are shipbuilding hydraulics, valve control systems, and maritime measurement technology.

1989

Entry into laser optics

Establishment and expansion of the Pleiger Laseroptik division in Witten. The portfolio encompasses high-precision optical components, mirrors, and coatings for CO₂ lasers and industrial optical systems.

1995-1998

Expansion into China (Pleiger Shanghai)

Founding of the Chinese subsidiaries (Shanghai Pleiger, Pleiger Dagang) to locally serve the growing Asian market for mechanical engineering, hydraulics, and plastics technology.

2000-2005

Structuring of the Pleiger Group

Reorganization of the individual divisions into independent, specialized companies under the umbrella of Pleiger Holding: - Pleiger Maschinenbau GmbH & Co. KG (hydraulics, drives, marine technology) - Pleiger Thermoplast GmbH (now Plastics / PA processing) - Pleiger Elektronik / Industrietechnik

2002

US expansion: Pleiger Plastics Company (Pennsylvania)

Expansion of US operations with Pleiger Plastics Company in Washington, Pennsylvania (USA) for the manufacture of polyurethane cast elastomers for the North American market. Today managed by Mike Savage.

2010--2015

Expansion of capacities in Witten and PA processing

Modernization of the shop floors in Witten. The Pleiger Plastics division significantly expands the area of polyamide (PA) processing and cast polyamides for mechanical engineering and vehicle construction.

2018-2020

Further development of Pleiger Elektronik and system technology

Increased focus on digital control systems, building automation, fieldbus components, and customized electronics manufacturing within Pleiger Elektronik GmbH.

2021

Consolidation as a global corporate group

Today, the Pleiger Group employs more than 600 people worldwide at locations in Germany (Witten, Blankenburg, Washington/PA), South Korea, China, and the USA. It is essentially divided into the pillars of mechanical engineering and hydraulics, plastics (cast elastomers and PA), laser optics, and electronics/industrial technology.

2026

Pleiger extends its thanks to Dr. Knop

Our long-standing Managing Director Markus Knop enters well-deserved retirement. Jörg Karthaus will support management in the future.