Centrifugal Barrel Finishing (CBF) is a high-speed mass finishing method. Unlike conventional barrel or vibratory tumbling, CBF machines mount multiple barrels on a central turret or flywheel. As the turret rotates in one direction, each barrel spins in the opposite direction, producing strong centrifugal forces (often 10–20 times gravity) that intensify the interaction between parts and abrasive media. This enhances material removal, smoothing, and polishing while maintaining part integrity.
In operation, parts are loaded into barrels with tumbling media and a finishing compound (in wet or dry mode). The combined mechanical action and media friction eliminate burrs, blend edges, polish surfaces, and prepare components for downstream processes.
CBF involves a machine featuring several barrels affixed to a central rotating turret that spins similarly to a high-speed Ferris wheel. While the turret rotates in one direction, each barrel turns the opposite way, generating powerful centrifugal force within each chamber.
Components are placed in the barrels along with selected tumbling media and compounds, either wet or dry. This intense centrifugal action compresses the mixture, creating a strong yet gentle sliding contact between the media and parts. This quickly removes burrs, softens edges, and polishes surfaces evenly. Despite the force, the process remains gentle, making it ideal for fragile parts.
Wet vs. Dry Processing
Cycle Variables
CBF is well-suited for producing high-quality finishes on complex parts in demanding industries:
This technique provides the surface integrity, consistency, and finish quality required in high-specification applications.
Our team brings deep experience in media selection and process refinement for even the toughest finishing needs.
We provide consistent finishes with strict tolerances, as tight as 0.0001 inches, even on delicate or complex parts.
Our batch processing reduces time and costs while delivering exceptional surface finishes at any production volume.
We support a wide variety of part shapes, sizes, and materials, serving as your go-to finishing partner.
| Industry Standards | AS 9100 D certified, ISO 9001:2015 |
| Engineering Process | Die Design, Progressive Tooling |
| Design Engineering Capabilities | AutoCAD, Unigraphics 7.5, NX Die Wizards, Diemaker, Prototype Development |
Every client we partner with gets the best of our capabilities on every project, regardless of its scale. Your project will come to you after passing through our expert technicians’ most experienced and skilled hands. It will undergo more than 50000 human hours of designing and tooling experience, depending on your requirements and the level of customization required. Our technicians and team members are regularly re-trained and updated on changing market conditions, trends, and customer requirements.
By partnering with Eigen Engineering, you can combine our combined knowledge and experience to create an excellent, refined project.
Good experience in fine stamping.
Steiner Jurgen
Germany
Bosch
Good management makes good association – good association makes good products. That is Eigen for you!
Ashida Koji
Japan
Denso corporation
Great systems and organisation. You are our potential supplier for stamped parts.
Umesh Kini
Tyco Health care
Global sourcing
The parts I saw adds to my conviction that you are a quality Operation. This lends credibility to the nation and you will be successful in making our parts.
Leonard Challenger
USA
Saft
Excellent tool room facilities, very satisfied customers.
Anil.K.Srivastava
Connectwell Industries (P) Ltd.
DGM
Eigen Engineering has been a game-changer for our manufacturing process. Their attention to detail, precision, and consistent quality have significantly improved our product line. Their team truly understands the importance of delivering on time without compromising standards.
– John D., Operations Manager
Automotive Sector
Backed by decades of expertise in design, development, manufacturing and supply of progressive metal stamping tools and components.
Located in the technology capital of India, we have quick access to ports, easy availability of established vendors and excellent tool making expertise.
Eigen is a supplier for customers in Europe, the USA in the aerospace, locomotive and electronics segment with a proven track record of product quality, customer service and delivery performance.
Eigen has the proven track record of design, development and manufacture of progressive press tools up to 45 stages with complex profiles.
Empowering industry leaders with precision engineering, cutting-edge solutions, and unwavering commitment to quality. Our partnerships are built on trust, innovation, and proven excellence.
Eigen works and delivers precision to the best in the industry. Here’s a look at some of the companies we’ve partnered with.
