Wear parts for co-rotating twin-screw extruders: barrels, screw elements and shafts including service
Extruder Experts GmbH & Co. KG
52156 Monschau, GermanyNew on Amplifa
Extruder Experts. Wear parts with system
Extruder Experts is a manufacturer and service provider of wear parts for co-rotating twin-screw extruders. The company manufactures barrels in three designs (solid barrels, bushing barrels, directly HIP-clad barrels), screw elements such as conveying and backward-conveying elements, mixers and kneaders as well as drive shafts. Manufacturing takes place on modern CNC machines using a broad spectrum of materials, from nitriding and tool steels through to PM-HIP wear bushings with 60% tungsten carbide in a nickel base as well as cobalt- and nickel-based hardfacing coatings. In addition to new production, the offering includes maintenance and inspection with sensor-based wear measurement and endoscopy, assembly and disassembly, repair and overhaul of barrels and equipped screws, as well as modernization and optimization, e.g. conversion to involute gearing. Customers come from compounding, plastics processing, food and feed. The company has been based in Monschau since 2006 and supplies customers in Europe and beyond.
- Site
- Monschau
- Processes
- Manufacture of wear parts for twin-screw extruders (barrels, elements, shafts), Manufacture of barrels (solid barrels, bushing barrels, directly HIP-clad barrels), Manufacture of screw elements (conveying and backward-conveying elements, flights with, Manufacture of mixers (toothed blocks, toothed mixing segments, SME segments), Manufacture of kneaders (standard kneaders 30/45/60/90 degrees, eccentric kneaders), Manufacture of drive shafts (long shafts, heat-treated tool steel), Barrel repair (lining with thin-walled wear bushings, regeneration of cooling systems), Repair and replacement of used equipped screws
- Materials
- Nitriding steel, Through-hardened steel (through-hardened barrels), PM-HIP wear bushings with 60% WC in nickel base, Stellite, non-hardenable steel (outer body direct-HIP), heat-treated high-alloy tool steel, corrosion-resistant special material (shafts), Cobalt base (flight coating)
- Certificates
- ISO 9001
- Founded
- 2006
- Industries
- Compounding, Plastics processing, Food, Feed (animal feed)
- 01
Consulting and configuration consulting
- 02
Design / CAD
- 03
CNC manufacturing of wear parts
- 04
Heat treatment / HIP coating
- 05
Quality control
- 06
Assembly and installation
- 07
Maintenance and wear measurement
- 08
Repair and overhaul
Materials and processes
Nitriding steel
Standard material for one-piece solid barrels of twin-screw extruders.
PM-HIP wear bushings with 60% WC in nickel base
Highly wear-resistant bushings for extreme abrasive loads in the barrel.
Stellite
Hardfacing material for wear-exposed barrel components.
Hot isostatic pressing (HIP)
A sintered powder layer of approx. 2–3 mm produces directly HIP-clad barrels with a wear-resistant coating.
Heat-treated high-alloy tool steel
Standard material for drive shafts subject to high bending fatigue and torsional loads.
Cobalt- and nickel-based hardfacing coatings
Coating of screw flights for intensive loads in food and feed applications.
Monschau site
Monschau
DEHeadquarters / Production
- Materials
- Nitriding steel, PM-HIP materials, tool steel, cobalt and nickel base
- modern CNC machines
Products: barrels, elements, shafts
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of wear parts for twin-screw extruders (barrels, elements, shafts)Machining | – | – | – | – | Nitriding steel, PM-HIP wear bushings, WC in nickel base, Stellite, non-hardenable steel, heat-treated high-alloy tool steel |
| Manufacture of barrels (solid barrels, bushing barrels, directly HIP-clad barrels)Machining | – | – | – | – | Nitriding steel, Through-hardened steel, non-hardenable steel, WC/nickel base, Stellite |
| Manufacture of screw elements (conveying and backward-conveying elements, flights withMachining | – | – | – | – | Steel, Cobalt base, Nickel base |
| Manufacture of mixers (toothed blocks, toothed mixing segments, SME segments)Machining | – | – | – | – | – |
| Manufacture of kneaders (standard kneaders 30/45/60/90 degrees, eccentric kneaders)Machining | – | – | – | – | – |
| Manufacture of drive shafts (long shafts, heat-treated tool steel)Machining | – | – | – | – | heat-treated high-alloy tool steel, corrosion-resistant special material |
| Barrel repair (lining with thin-walled wear bushings, regeneration of cooling systems)Assembly | – | – | – | – | – |
| Repair and replacement of used equipped screwsAssembly | – | – | – | – | – |
| Maintenance and inspection / wear measurement (sensor-based measurement of the bores, endoscopicTesting | – | – | – | – | – |
| Assembly and disassembly (barrel installation, replacement of heating collars/heating cartridges)Assembly | – | – | – | – | – |
| Repair and overhaulAssembly | – | – | – | – | – |
| Modernization and optimization (configuration consulting, process optimization Cool and Clean,Engineering | – | – | – | – | – |
| Design / development of individual extruder solutionsEngineering | – | – | – | – | – |
| HIPing (hot isostatic pressing of powder layers approx. 2–3 mm, directly HIP-clad barrels)Surface treatment | – | – | – | – | Powder metallurgy (PM), WC/nickel base |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| modern CNC machines | – | – | – | – | – |
Additional services
Quality management
Every step along the value chain is monitored – from product development through production to installation and removal. Inspection includes sensor-based measurement of the bores as well as endoscopic examination with graphical documentation of the actual condition.
| Evidence | Monschau |
|---|---|
| ISO 9001 |
Company history
- 2006
Founded as a garage-based company in Monschau; today a leading service provider and component manufacturer for co-rotating twin-screw extrusion in Europe.
- 2026
New partnerships with Balázs Kalmár (Doming) in Hungary and Roberto Atesini (De Amici) in Italy.