Upload drawing:
Fitting calculator
Terms of use:
FACTUREE – The Online Manufacturer provides online tools, permanently free of charge, to all interested users. We always look forward to amiable reviews and recommendations, online as well as offline. All tools have been tested, but we are not liable for the correctness of results.
For the fit, the dimensional relationship of two workpieces with an identical nominal dimension and subject to tolerances is designated, in which the tolerance fields, however, can differ in position and size. The permissible nominal dimensions are defined through fits, for example, for holes and shafts that are to be connected with one another. The corresponding fundamental tolerances and limit values are thereby established in ISO 286-1:2010 and ISO 286-2:2010.
Fits always consist of three pieces of information:
- Nominal dimension: Nominal dimension for the diameter of the hole or the outer diameter of a shaft.
- Degree of tolerance: marked with numbers from 01-18. The smaller the number, the smaller the tolerance field.
- Tolerance position: Designated with the letters A - ZC. Describes the position of the tolerance field. The farther a letter is from A, the tighter the fit.
The following types of fits thus arise:
- Clearance fit (maximum shaft dimension is always smaller than the minimum dimension of the hole)
- Interference fit / press fit (minimum dimension of the shaft is always greater than the maximum dimension of the hole)
- Transition fit (depending on the attained nominal dimensions, either clearance fit or interference fit)
Our online fit calculator not only calculates the maximum tolerated dimensions for a given nominal dimension and type of fit, but as the first fit calculator, also does the reverse. This can be helpful when using drawings which, in addition to having nominal dimension, only include the tolerance variations. If the inner and outer fit are specified, the fitting type is additionally output and visualized.
All manufacturing processes from a single source - with FACTUREE
Whitepaper media library
Simple and future-proof procurement
FACTUREE has analyzed the biggest challenges and needs in procurement in a comprehensive market research study. This white paper provides exclusive study results and shows how companies can reduce complexity in sourcing, optimize processes and future-proof their procurement.
November 2024
Series production companies find themselves in an unprecedented situation in terms of procurement. as far as procurement is concerned. Uncertainties and crises create difficult conditions and often make even short-term planning impossible. At the same time, it is important to to realign themselves in the course of digitalization and react to constantly changing competitive situations.
16 pages
Online Manufacturing – Procurement advantages in series
February 2023
News and dates
