Okamoto machines are exclusively available through Ellison Technologies in the following states:
California, Wisconsin, North Carolina, Tennessee, Oregon, Washington, Georgia, Alabama, Mississippi, South Carolina and Virginia.
The Problem 4M Was Built to Solve
Bearing ring distortion is a byproduct of the manufacturing process. Machining introduces stress, and heat treatment changes the geometry further. Parts that leave those processes out of round, out of flat, or dimensionally inconsistent need to be corrected before they can function reliably in a bearing assembly. That correction requires grinding equipment capable of working to tight tolerances on thin-walled, high-value components where removing too much material is not an option.
We are dedicated to providing the highest quality grinding services," said Medina. "Through our grinding process, we are able to correct bearing ring distortion that occurs during machining and heat treat process.
4M's work spans thin-section bearing-ring grinding for parts up to 18 inches in diameter. Each of those processes demands consistent machine performance and the flexibility to handle parts across a range of sizes and geometries.
Why 4M Chose Okamoto
As 4M's workload grew, Medina needed grinding machines that could keep up with the precision requirements of bearing work without introducing variability of their own. He turned to Okamoto.
Okamoto's range covers a wide spectrum, from compact hand-feed surface grinders to large, high-production rotary surface models capable of tight tolerances on demanding materials. For 4M, the high-production rotary surface machines gave Medina the consistency and output capacity his customers required. The machines hold dimensional accuracy across long production runs, which is exactly what bearing ring correction demands.
The range of available models also mattered. As 4M's capability needs evolved, the Okamoto lineup gave Medina options rather than constraints.
A Partnership That Goes Beyond the Machine
For Medina, the relationship with Ellison Technologies has been as important as the machines themselves. Buying a precision grinding machine is one thing. Having a distributor that understands the application, responds when something goes wrong, and supports the shop's growth over time is another.
Ellison Technologies has been that partner for 4M. The collaboration has kept 4M's operations running smoothly through machine additions, capability expansions, and the ongoing demands of high-precision bearing work. As 4M has taken on new applications and explored new technology, Ellison has been part of those conversations.
That kind of partnership is what Medina had in mind when he designed the business from the ground up. With an architectural background that shaped how he approached the physical layout and operational design of 4M, he built the facility and the supplier relationships with long-term capability in mind. Ellison Technologies has been a consistent part of that picture.