What is DIN 7168?
Table of Contents
What is DIN 7168?
DIN 7168 is a general tolerance standard for linear and angular dimensions, which could be widely used for inspection to cast iron and cast steel castings. It is a very useful standard for buyers and suppliers. For nominal sizes below 0.5 mm, the deviations shall be indicated adjacent to the relevant nominal size.
What is tolerance class HKL?
Tolerance class is defined as per design requirements and manufacturing capability. For example : for sheet metal parts ISO 2768–mk is used. And for machined components ISO 2768–fh can be used.
Are DIN standards still used?
National standards (DIN) will be/have been largely replaced by international/European standards. DIN standards are still valid for products having no ISO or EN standards.
Where can I find EN standards?
European Standards can be found on the respective Catalogues of the European Standardization Bodies (CEN, CENELEC and ETSI). The national adoptions of the European Standards can be found on the respective catalogues of the National Standardization Bodies.
What is the tolerancing principle of Din 7168?
Page 4 DIN 7168 4.2 Tolerancing principle ‘envelope requirement without indication on drawing’ as specified in DIN 7167 4.2.1 General tolerances of form General tolerances of form have not been specified. All deviations in form shall, if no individual tolerances of form have been indicated, be limited by the dimensional tolerances as follows.
When is a larger tolerance required on a blank?
•finished surface on a blank (e.g. on a casting blank or •forging blank), for which no individual tolerance has been indicated, will be required to meet the general tolerance given in the relevant standard on blanks, provided that is indeed the larger tolerance.
What is the tolerance class for permissible deviation?
Permissible deviations, in units of angle, for nominal sizes of the shorter leg, in mm, Tolerance class over 10 over 10 up to 50 over over 50 120 up to up to 120 400 over 400 f (fine) T 1 ° ±30’1±20′ i ±10′ ± 5′ m (medium) g (coarse) ± 1° 30′ I
