Accuracy and tolerances

Reamers, fits, thread gauges - calculation and verification

4 tools

For whom: technologists and metrologists working with ISO fit tolerances, tapered holes and thread gauges. All calculations comply with GOST, DIN and ISO.

Calculation of cone scan

Determines the geometry of a conical hole and selects the development parameters for a given cone (Morse, metric, inch or arbitrary).

EnterCone type, diameters D/d, length, tolerance

Bottom lineCone angle, reamer diameters, finishing pass allowance

Calculate cone→

Development - allowance

Calculation of allowance for reaming depending on the hole diameter, material and accuracy class. Eliminates splitting and under-deployment.

EnterØ holes, workpiece material, quality

Bottom lineRecommended allowance, drilling Ø before reaming

Calculate allowance→

ISO fits and tolerances

Interactive guide to the ISO tolerance and landing system. Limit deviations for any combination of nominal size, basic deviation and quality.

EnterNominal size, fit designation (e.g. H7/g6)

Bottom lineES/EI and es/ei, clearance/interference, fit pattern

Open directory→

Thread gauges - go/no-go

Checking the compatibility of threaded plug gauges and rings along the average diameter d2. Compliance with GOST, DIN 13, ANSI. For metric, imperial and pipe threads.

EnterThread designation, accuracy class, gauge type

Bottom lineLimit values d2 for go/no-go, manufacturing tolerance

Check calibers→

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