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Extruder Shafts
New and replacement screw shafts up to 800 mm finished diameter — manufactured and refurbished
We manufacture new and replacement shafts for every make and model of single-screw and twin-screw extruder, in current production and obsolete platforms alike. Each shaft is produced from forged alloy or nitriding steel, heat treated for the torque and fatigue duty of the machine, and released against a documented inspection plan — with the manufacturing schedule planned around your outage window.
What We Supply
New shaft manufacture — complete production comprising material, forging, heat treatment, machining, surface engineering, inspection and documentation; finished diameters to 800 mm.
Direct replacement — a dimensionally interchangeable shaft manufactured to the original design intent and supplied ready for installation.
Upgraded replacement — revised material, heat treatment, fillet geometry, spline contact, corrosion resistance or localized wear protection, developed around the documented failure mechanism and verified for interchangeability.
Splined and keyed shafts — single-piece and sectional, with spline fits matched to your existing element stock, in pairs for twin-screw machines.
Matched component supply — shafts, sleeves, screw elements, spacers, coupling features, seal surfaces and related drive-train components supplied as a single engineered package.
Extruder Platform Coverage
We manufacture and supply new and replacement shafts for all extruder platforms in service today, including — but not limited to — the machines below.
| Manufacturer | Extruder models and families |
|---|---|
| JSW — The Japan Steel Works | CMP251, CMP274, CMP308, CMP335, CMP362, CMP387, CMP443; CIM360, CIM400, CIM460, CIM510, CIM560 |
| Kobelco | LCM, KTX and TSR families; LCM-H, LCM-EX, LCM-G, Hyper KTX, NEX-T, Mixtrumat and NCM legacy families |
| Coperion | ZSK MEGAcompounder family, including ZSK 380 and ZSK 420 |
| ENTEK | HT 162 |
| Farrel Pomini | FCM and FMP systems, including FMP100 |
| KraussMaffei | KE, ZE-PC and ZE BluePower families |
| Leistritz | ZSE 260 MAXX |
| All other makes | Single-screw, co-rotating and counter-rotating twin-screw extruders of any manufacturer, model or age |
Platforms not listed are equally within scope, including obsolete and out-of-production equipment reproduced by reverse engineering. The extruder manufacturer and model are sufficient to open a project.
JSW Extruder Platforms
Our extruder program is built around JSW equipment. We hold established manufacturing experience across the CMP and CIM platforms: shaft geometry, spline and coupling systems, element seats, material specifications and the service-limiting mechanisms characteristic of these machines.
The following components are supplied for the JSW CMP251, CMP274, CMP308, CMP335, CMP362, CMP387 and CMP443, and for the CIM360, CIM400, CIM460, CIM510 and CIM560:
| Component | Supply |
|---|---|
| Screw shafts (pair) | New manufacture and refurbishment |
| Sectional shafts and shaft extensions | New manufacture |
| Shaft sleeves, spacers and tip nuts | New manufacture and replacement |
| Spline and coupling features | New manufacture and refurbishment |
| Journals and seal surfaces | New manufacture and restoration |
Shafts are supplied individually, as a matched pair, or within a wider extruder and pelletizer package covering screws and screw elements, barrels, die plates, pelletizer knives, mechanical seals, couplings and bearing bushes — including Nordson BKG Type AH D drive and rotor parts — with interface dimensions coordinated across the assembly.
Materials
| Application | Materials and treatment |
|---|---|
| Shaft body | Forged quenched-and-tempered alloy steels (34CrNiMo6 / 4340, 42CrMo4 / 4140) and nitriding steels (31CrMoV9), heat treated to the torque and fatigue duty |
| Splines and element seats | Induction or case hardened, or nitrided, to original hardness and case depth |
| Journals and seal surfaces | Hardened, hardfaced or coated for wear and corrosion resistance |
| Corrosive service | Corrosion-resistant grades and localized overlays where the compound demands it |
Material and treatment are selected to the documented duty and failure mechanism, and upgraded where the original was under-specified.
Refurbishment
Where inspection confirms the core material remains serviceable, a shaft is restored to original geometry and returned to service at a fraction of the cost of a new pair.
- Incoming inspection — straightness and run-out, journal and seal surface condition, spline tooth thickness and wear, keyway and element seat fit, thread and coupling feature condition; hardness check and crack detection.
- Condition report — measured wear against the service limit, remaining life and a clear recommendation: refurbish, replace or run on.
- Cleaning — polymer removal and cleaning of splines, seats and threads.
- Rebuild — straightness correction and stress relief; journal restoration by weld overlay, plating or thermal spray; spline and keyway recovery; localized build-up of worn seats.
- Surface re-treatment and finish grinding — re-nitriding, re-hardening or coating as required, followed by finish grinding to original size and finish.
- Final inspection and matching — dimensional, run-out and hardness verification, and trial assembly with the mating elements and coupling before shipment.
Reverse Engineering
We hold the technical information needed to produce shafts for the platforms above. Where a shaft is obsolete, undocumented or from an out-of-production machine, we reverse engineer it from the worn shaft: overall geometry, spline data, element seat and keyway dimensions, journal and seal surface sizes, fillet radii, coupling interface, material and hardness. The resulting manufacturing drawing package becomes the permanent record for repeat supply.