
Development and production of high-pressure pumps, hydraulic open-die forging presses, and their drives and control systems.

Wepuko PAHNKE GmbH
Metzingen · Springfield, Ohio (USA) · Beijing (China)New on Amplifa
Company
Wepuko PAHNKE GmbH is a mechanical and plant engineering company based in Metzingen (Baden-Württemberg) specializing in the development and production of high-pressure pumps and hydraulic forging presses as well as their drives and control systems. The product range includes horizontal triplex plunger pumps, radial piston pumps with controllable and constant delivery flows, pump units, complete descaling plants, and oil and water hydraulic systems. In-house developments such as the PMSD drive (PAHNKE Modified Sinus Direct Drive) and the two-column underground design for open-die forging presses originated from the company. Founded in 1932 by Fritz Thumm, the company is active in metallurgy, the oil and gas industry, chemicals, and power plants; customers include Otto Fuchs, Citic Heavy Industries, SMS Meer, Vallourec & Mannesmann, Robert Bosch, ArcelorMittal, Shell, Petrobras, and Hyundai Heavy Industries. The group includes sister companies in the USA, China, and Russia; through a network of representatives, Wepuko PAHNKE is present in more than 70 countries. Services include commissioning, maintenance, spare parts supply, rental machines, training, and a 24-hour emergency hotline.
- Site
- Metzingen
- Processes
- Development and production of hydraulic forging presses (open-die forging presses), Development and production of high-pressure pumps (triplex plunger pumps, radial piston pumps), Complete descaling plants, Oil hydraulic systems, Water hydraulic systems, Compressors (high-pressure compressors, air-cooled, portable), Rental machines (compressors, pumps, complete units), Service & maintenance, commissioning, spare parts, emergency service (24h hotline), training
- Materials
- PMSD drive (PAHNKE Modified Sinus Direct Drive), Oil-hydraulic radial piston pump RP, Horizontal triplex plunger pump DP 80, Two-column underground design for open-die forging presses
- Certificates
- ISO 9001 (quality management), KTA 1401, AVS D 100 / 50, AEO certificate, AD 2000-Merkblatt HP 0, DIN EN ISO 3834-2, Quality management (certified), KTA 1401 (nuclear technology), AVS D 100/50
- Founded
- 1932
- Industries
- Metallurgy, Oil and gas industry, Chemicals, Power plants
- 01
Engineering & Development
- 02
Design of custom units and systems
- 03
Manufacture of pumps, presses, and drives
- 04
Assembly & acceptance testing
- 05
On-site commissioning
- 06
Service & maintenance, spare parts supply
Technologies & Processes
PMSD drive (PAHNKE Modified Sinus Direct Drive)
Direct drive for hydraulic forging presses with fast controllability, developed in 1975.
Oil-hydraulic radial piston pump RP
High-performance radial piston pump, built under license at Wepuko since 1957.
Horizontal triplex plunger pump DP 80
High-pressure triplex plunger pump for process and press applications.
Two-column underground design for open-die forging presses
Press design with two columns in underground configuration, first realized in 1956 (10 MN).
Locations

Metzingen
DEHeadquarters / Production
- Open-die forging press with two-column underground design
- Oil-hydraulic radial piston pumps (RP)
- Horizontal triplex plunger pumps (DP 80)
- PMSD drives
Springfield, Ohio
USSubsidiary Wepuko PAHNKE USA LP (WPE)

Beijing
CNSubsidiary Wepuko PAHNKE Technology (Beijing) Co., Ltd.
Products & Components




Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Development and production of hydraulic forging presses (open-die forging presses)Mechanical and plant engineering | – | – | – | – | – |
| Development and production of high-pressure pumps (triplex plunger pumps, radial piston pumps)Mechanical and plant engineering | – | – | – | – | – |
| Complete descaling plantsMechanical and plant engineering | – | – | – | – | – |
| Oil hydraulic systemsMechanical and plant engineering | – | – | – | – | – |
| Water hydraulic systemsMechanical and plant engineering | – | – | – | – | – |
| Compressors (high-pressure compressors, air-cooled, portable)Mechanical and plant engineering | – | – | – | – | – |
| Rental machines (compressors, pumps, complete units)Mechanical and plant engineering | – | – | – | – | – |
| Service & maintenance, commissioning, spare parts, emergency service (24h hotline), trainingEngineering | – | – | – | – | – |
| Process simulation for open-die forging (in cooperation with Transvalor)Engineering | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Open-die forging press with two-column underground design | – | – | – | 1956 | – |
| Open-die forging press (60 MN, upgraded, isothermal forging) | – | – | – | – | – |
| Oil-hydraulic radial piston pump | Wepuko RP | – | – | 1957 | Metzingen |
| Horizontal triplex plunger pump | Wepuko DP 80 | – | – | – | Metzingen |
| PMSD drive (Pahnke Modified Sinus Direct Drive) for forging presses | Wepuko PAHNKE PMSD | – | – | 1975 | – |
Additional services
Reference customers
Certificates & Standards
Wepuko PAHNKE operates a certified quality management system and holds certificates for nuclear technology (KTA 1401, AVS D 100/50), the AEO certificate, as well as AD 2000-Merkblatt HP 0 and DIN EN ISO 3834-2 (welding). Agreed acceptance tests are carried out at the place of manufacture under ORGALIME conditions.
| Evidence | Metzingen |
|---|---|
| Quality management (certified) | |
| KTA 1401 (nuclear technology) | |
| AVS D 100/50 | |
| AEO certificate | |
| AD 2000-Merkblatt HP 0 | |
| DIN EN ISO 3834-2 |
Company History
- 1888
Friedrich Krumm opens a mechanical workshop in Urach (prehistory).
- 1932
Fritz Thumm founds the pump and compressor factory in Metzingen on May 24.
- 1934
Merger with the Werkzeugfabrik Metzingen von Neudeck; origin of the name "Wepuko".
- 1951
The first vertical oil hydraulic pump goes into series production.
- 1956
First open-die forging press with two-column underground design (10 MN) under the direction of Hans-Joachim Pahnke.
- 1957
Hans-Joachim Pahnke develops the oil-hydraulic radial piston pump RP, which Wepuko builds under license.
- 1966
Introduction of large radial piston pumps with fast controllability and delivery flow reversal.
- 1973
Foundation of Pahnke Engineering in Düsseldorf.
- 1975
Development of the PMSD drive (PAHNKE Modified Sinus Direct Drive).
- 1996
Wepuko is acquired by the Pahnke family.
- 2002
Merging of the products of both companies into one company.
- 2009
Largest hydraulic system in the world at Norheinco (China) with PMSD drive goes into operation.
- 2011
Renaming to Wepuko PAHNKE GmbH; the world's most powerful open-die forging press goes into operation at Citic Heavy Industries in China.