With precision machining, it’s all in the details, especially the small ones. Tiny variations in total indicator runout, subtle vibrations absorbed through damping and minute deviations in concentricity all play a huge part in the final product and ensuring your cut is at its most accurate every time you’re machining. Understand the basics of why the details matter and how you can choose tooling that improves your shop’s efficiency.
| What It Is | Why It Matters | |
| Total Indicator Runout (TIR) |
TIR calculates how much a tool’s cutting edge deviates as it rotates in the spindle. Using a dial indicator, its measurements are expressed in microns or thousandths of an inch. Lower TIR means the tool spins truer to center, leading to cleaner cuts and an overall longer tool life. Invisible to the naked eye even the tiniest TIR can negatively affect part tolerances and surface finishes.
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Runout leads to uneven cutting loads, which results in accelerated tool wear, poor surface finishes, increased heat generation and possible tool breakage. For high-precision applications even a few microns of runout can cause a part to be completely scrapped.
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| Vibration Damping | Vibration damping refers to a toolholding system’s ability to absorb or reduce cutting vibrations. Effective vibration damping improves tool stability, reduces noise and prevents premature wear of the toolholder | Without proper damping, vibrations can transfer through the spindle to the cutting edge, leaving tool chatter marks, reducing dimensional accuracy and even damaging the spindle bearings over time. In long-reach or high-speed machining, vibration control is essential for consistent results. |
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Concentricity
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Concentricity refers to the degree of precision with which the tool’s cutting edge is aligned with its rotational axis. A perfectly concentric setup ensures that every flute on the tool engages the material evenly, preventing uneven wear and producing uniform cuts.
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Poor concentricity causes uneven chip load distribution. One flute may do more work than others, shortening tool life and compromising part accuracy. In high-speed applications, this imbalance can also contribute to harmful vibrations.
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What Matters to You Matters to Us
Total Indicator Runout
REGO-FIX toolholders are manufactured to meet industry-leading tolerances – often under 3 microns TIR – to ensure the tool rotates as close to its true center as possible. This accuracy directly translates to extended tool life and superior part quality, so you never sacrifice precision.
Vibration Damping
Concentricity
Every REGO-FIX collet, nut and toolholder is engineered for maximum concentricity, meaning your tools cut evenly and consistently every time. This precision alignment boosts your performance and protects your spindle.
Cutting corners with toolholding hurts the accuracy and overall quality of your end product, which is why it’s so important to understand what TIR, vibration damping and concentricity are, and why they matter.