OEE (Overall Equipment Effectiveness) is the gold standard for measuring manufacturing productivity. It combines three factors — availability, performance, and quality — into a...
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Request a Proposal →Published starting values are not measurements. They are recommendations, and they differ because each manufacturer optimises for something different — tool life, surface finish, chip control, or spindle power. Two suppliers can quote the same ISO grade and give you cutting speeds 30% apart, and each figure can be right for that supplier’s own geometry, edge preparation and coating.
That is why the number this calculator returns is a starting point, not a setting. Treat the catalogue figure as the middle of a band, then correct it on the first part: if the chips come off blue or the spindle load sits above roughly 80%, come down; if the finish is smeared and the chips are thin and stringy, come up. Write down what actually worked — that shop-specific number beats any published value.
OEE (Overall Equipment Effectiveness) is the gold standard for measuring manufacturing productivity. It combines three factors — availability, performance, and quality — into a single metric that reveals where production time is being lost.
World-class OEE is 85%+. Typical CNC job shops run 50-65%. Below 50% indicates significant waste: excessive setups, unplanned downtime, slow cycles, or high scrap. Target 75%+ as a realistic improvement goal for most shops.
Focus on the biggest loss category first. Availability losses (setups, breakdowns) are usually the largest. Then performance (slow cycles, minor stops). Quality losses (scrap, rework) are often the smallest. SMED setup reduction and preventive maintenance deliver the fastest OEE gains.
OEE measures how effectively a machine runs when it is scheduled to run. Utilisation measures what percentage of total available time the machine is scheduled. A machine can have 95% OEE but only 40% utilisation if it sits idle between jobs.
Enter planned production time, actual cycle time, and good parts count. The calculator breaks down OEE into availability, performance, and quality rates. Use the results to identify and prioritise improvement opportunities.
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Use the calculator freely. If the result points to a tooling or process problem, we can source the exact carbide tooling you need from vetted factories in China. Compare factory-direct pricing.
Before you commit to a spec, it helps to know what the market pays for it. These are real, publicly listed factory prices — not a quotation, and not a guess.
We source the tool families below direct from vetted Chinese factories, matched to the material and tolerance you just worked out. Every batch ships with its material certificate and dimensional record.
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We source carbide cutting tools from China for job shops. We do not own a factory, which is why we can quote your drawing against two or three plants that actually run your material.
Cutting formulas with the units worked through · Speed and feed starting points for all six ISO material groups · How to read a carbide grade past its ISO code. 12 pages.
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