As a precision machining company, achieving exceptionally tight tolerances is key to our success. But just how tight can these tolerances go? Let's dive into the world of precision machining and uncover the limits.

Read on to learn more about the boundaries of precision machining tolerances.

Microns and Thousandths of an Inch

Tolerances are usually measured in microns (μm) or thousandths of an inch (0.001"). General machining often achieves tolerances of +/- 2-5 thousandths of an inch. However, the tightest tolerances can reach just a few microns. Some experts consider any tolerance below 10 microns to be extremely precise. Top-tier precision machine shops consistently hold tolerances of 5 microns or less on intricate parts.

The Medical Device Industry

One field that demands the highest precision is medical device manufacturing. From implants to surgical instruments, every component must meet micron-level specifications. Deviations beyond these tolerances can result in functional failure. Leading manufacturers can produce parts with tolerances as low as 1-3 microns, which is critical for procedures like laser eye surgery where exact positioning and clearance are vital.

Aerospace Component Precision

The aerospace sector also pushes the limits of precision machining. Weight reduction, tight clearances, and performance requirements mean even basic components need to be machined to micron-level tolerances. Components for spacecraft, jet engines, and other aviation parts regularly achieve tolerances of 2 microns or less. This level of precision distinguishes capable aerospace suppliers from general machining facilities.

The Limits of Current Technology

While tolerances of 1 micron or less are technically possible, they strain the limits of modern machining technology. Thermal expansion, vibrations, and tool wear all contribute to degradation in achievable tolerances, even on advanced CNC machines. For most applications, tolerances ranging from 2-5 microns represent the practical limit that can be consistently achieved with confidence in precision machining. Achieving tolerances below 1 micron requires specialized equipment and meticulously refined processes optimized for nanometer-level accuracy.

Cheetah Precision Machining – Your Partner for Precision

Today’s precision machining capabilities extend into the micron range required by medical devices and aerospace components. While sub-1-micron work challenges even the best machinery, tolerances from 1-5 microns define the cutting edge of precision machining. At Cheetah Precision, we leverage our advanced 5-axis milling expertise, robust quality control systems, and decades of experience to deliver micron and sub-micron tolerances on complex parts. Whether you need prototypes or large-scale production runs, we’re your trusted partner in precision manufacturing. Contact us today at (651) 633-4566 to discuss your project needs.

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