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What is the Tightest Tolerance for a Precision Machining Company?
As a precision machining company, the ability to produce parts with extremely tight tolerances is essential for success. But what exactly defines the "tightest" tolerance, and how precise can manufacturing really get? Let's take a closer look at the limits of precision machining.
Tolerances are typically measured in microns (μm) or thousandths of an inch (0.001"). While general machining can achieve tolerances of ±2 to ±5 thousandths of an inch, the most advanced processes push these dimensions down to just a few microns. In fact, anything below 10 microns is considered extremely tight. Leading precision machine shops regularly maintain tolerances of 5 microns or less on complex components.
One industry that demands the highest levels of precision is medical device manufacturing. Implants, surgical instruments, and diagnostic tools all require micron-level accuracy. Even the slightest deviation can mean the difference between a successful procedure and a failure. Top manufacturers are capable of achieving tolerances as tight as 1 to 3 microns for critical applications like laser eye surgery, where perfect alignment and clearance are essential.
The aerospace industry also relies heavily on tight tolerances. With requirements for weight reduction, tight clearances, and high-performance standards, even simple-looking parts often need to be machined to within a few microns. Tolerances of 2 microns or less are common in spacecraft components, jet engines, and other critical aerospace systems. The ability to consistently meet such tight specifications sets apart specialized precision machining suppliers from general-purpose shops.
While tolerances below 1 micron are possible, they push the limits of current machining technology. Factors like thermal expansion, machine vibrations, and tool wear can all affect the final result. For most applications, tolerances between 2 and 5 microns remain the practical limit that can be reliably achieved. However, achieving sub-micron tolerances requires specialized equipment, advanced cooling systems, and highly refined machining techniques.
At Cheetah Precision Machining, we specialize in delivering consistent, high-precision results for even the most demanding applications. Our state-of-the-art 5-axis milling machines, strict quality control processes, and decades of experience allow us to hold tolerances as tight as 1 to 5 microns on complex parts. Whether you need prototypes or large-scale production, we have the expertise to meet your exacting requirements.
Contact us today at (651) 633-4566 to learn more about our precision machining services. Click here to discover more about our capabilities and how we can help bring your project to life.