Barrel & Screws


Parts Barrel & Screws Gearboxes

Barrel and Screw Stocking & Rebuild Programs

Milacron provides an extensive selection of new barrels and screws for injection molding and extrusion machines. Many of our injection barrels and screws are in-stock and ready to ship same-day. Leveraging the long-standing quality and expertise the plastics processing industry has come to know from Wear Technologies, Milacron’s team of experts can help design the right injection or extrusion screws to fit your application. Our network of Technical Sales & Field Service personnel are fully trained to measure your barrels and screws on-site, whether they are on a Milacron machine or another machinery provider.

If you prefer to rebuild your barrel or screw, Milacron offers a nationwide rebuild service that allows our customers to extend the life of your components, or adapt them to new processes, at a lower price than buying new. All rebuilds are returned to a like-new specification and come with an industry-leading warranty that provides peace-of-mind.

Available In

North America
South America


Whether you are looking for a new extruder gearbox, a gearbox rebuild and upgrade, or an evaluation on your existing equipment, Milacron understands that high-quality gearbox performance and predictability is crucial to your extrusion operation. We offer responsive and powerful gearboxes for many types of extruders, including for Twin Conical, Twin Parallel, and Single Screw extruders. Whatever the extruder gearbox requirement, Milacron has the solution with capability to handle a broad range of sizes, makes, and models. In addition, our in-house machining capabilities make it possible to modify castings, re-sleeve and/or polish shafts, repair seal surfaces, resurface gear IDs, and re-key gears.

OEM Aftermarket Parts

You’ve invested in top quality plastics processing machines, so we’re invested in providing you with the best parts to keep them running. That’s why we maintain stock at strategic locations around the globe to provide you with parts at optimal fill rates. We invest in these global stock levels to ensure we have the most frequently needed parts and consumables available on call. With world-class inventory ready to go, fast delivery and competitive prices, Milacron is the only source you need for injection and extrusion aftermarket parts.



Spare Part Kits

Customized spare part kits are available to meet your operational and maintenance needs. Order the parts you need, have them packaged together and store them on-site. Our kits maximize uptime and save money on administrative costs. Contact Milacron today to learn what spare part kits we have available or let us customize one specific to your needs.

Upsize/Downsize Capability

Milacron’s Upsize/Downsize service is a fast, cost-effective way to complete bigger or smaller projects on your existing machinery. The process involves changing out components from the spline bushing out to the barrel adapter. The outer diameters of the components remain constant, while the inner diameters change to meet your new injection needs.

Injection pressures, software issues, feedscrew L/D, and compression ratios, as well as flight configurations are addressed on a case-by-case basis. The result is a cost-effective procedure that allows you to increase the versatility of your machines.

More than Machines

Milacron is the global leader in plastic processing solutions. We partner with our customers throughout the lifecycle of their equipment, helping them achieve their business goals. From sustainability consultation to training and advanced Industrial Internet of Things (IIoT) platforms, we focus on helping you leverage our industry-leading technology and talent to optimize your processes and maximize your production.

More than machines, Milacron is a partner that delivers possibilities.

About Us

Your Partner In Plastic Processing

Milacron transforms plastics into possibilities.

Contact us today to learn more about our complete plastic processing solutions.