Select hole and shaft tolerance classes, get the fit limits in microns.
The Iso Fit Calculator provides instant, accurate results for CNC machining professionals. Whether you're programming a Haas, Mazak, or Okuma, having the right reference data helps you make better decisions on the shop floor. This tool eliminates guesswork and reduces setup time.
In daily shop operations, the Iso Fit Calculator serves as a quick reference for machinists, programmers, and manufacturing engineers. Use it during setup, programming, or quality inspection to verify your parameters and ensure consistent results across production runs.
For best results with the Iso Fit Calculator, always verify your input values against known material specifications and machine capabilities. Document your settings in the setup sheet for repeatability. When in doubt, consult tool manufacturer recommendations for optimal performance.
How accurate is this tool? Results are based on standard engineering formulas and are provided for reference. Always verify critical dimensions with calibrated measurement equipment before production.
Can I use these results for all materials? The calculations apply to standard materials. For specialized alloys or non-standard conditions, consult the tool manufacturer for specific recommendations.
How do I improve my machining process with this data? Use this reference data as a starting point and adjust based on your specific machine, tooling, and material combination. Document successful settings for future reference.
| Application | Fit | Type | Typical Use |
|---|---|---|---|
| Sliding fit | H7/g6 | Clearance | Spools, guides |
| Precision sliding | H7/h6 | Clearance | Bearings in housing |
| Light press | H7/k6 | Transition | Gears on shafts |
| Press fit | H7/p6 | Interference | Bushings, sleeves |
| Heavy press | H7/s6 | Interference | Permanent assemblies |