When a chuck change system arrives from overseas with a six-month lead time and no clear path to service or replacement parts, your production schedule pays the price.
Positrol designs and manufactures USA-made chuck change systems and USA-made expanding mandrels from our Cincinnati, Ohio, facility, with every component cut, ground, assembled, and tested in-house. Domestic production means faster delivery, direct access to the engineers who built your workholding, and parts support that doesn't depend on international freight.
- Built in Cincinnati3890 Virginia Ave., Cincinnati, OH
- Made In-HouseCut, ground, assembled, and tested on our floor
- Domestic Lead TimesWeeks on standard builds, not months
- Direct EngineeringTalk to the people who designed your tool
Made in the USA Chuck Change Systems Built for Quick Changeover
A made in the USA chuck change system from Positrol drops onto your spindle and locks in repeatable mounting within seconds, cutting changeover time on mixed-lot jobs by a meaningful margin. Every chuck change system we build is machined from domestically sourced steel, hardened and ground to spec on our floor, and matched to your specific spindle interface.
Whether you're running a small batch of receivers in the morning and switching to a different part family after lunch, or you need a master plate setup that accepts multiple top tooling configurations, the change between setups stays measured in seconds rather than minutes. For high-volume shops, Chuck Change® Automated brings the same domestic build quality into a fully automated swap.
USA-Made Expanding Mandrels with Sub-Tenth Repeatability
Positrol's USA-made expanding mandrels hold concentricity within .0002" TIR and ship with the documentation, hardness certifications, and traceability that domestic manufacturing makes possible. Each expanding mandrel is built to your part print at our Ohio facility, with configurations available in single taper, double taper, slow taper, hi-torque flanged collet, and between centers styles.
When your job calls for uniform grip force around the full circumference of a bore, our hydraulic expanding mandrels deliver the same domestic build quality with activation through a single pressurized chamber. Lead times on standard builds run weeks rather than months, and engineering revisions get handled by a phone call to the people who designed the tool.
Domestic Manufacturing You Can Verify
Every chuck and mandrel we build carries documentation showing where the steel came from, who ground it, and how it tested before it left the floor.
Material Source
Where the steel came from
Who Built It
Who ground and assembled each component
Test Results
How it tested before it left the floor
For shops with DFARS requirements, prime contractor flowdowns, or buy-American clauses in their contracts, that paper trail matters as much as the tolerance. Contact our team to discuss your part, your machine, and the documentation your job requires.
