International Standard ISO 2768-1 was prepared by Technical Committee ISO/TC 3, Limits and fits. Oborová brána TECHNIKA - TECH • Plné texty Äasopiseckých Älánků, knihy, výzkumné nebo technické zprávy z Äeských i zahraniÄnÃch databázà nebo katalogů Informace k uplatnÄ›nà Elektronické evidence tržeb. NepÅ™edepsané meznà úchylky délkových a úhlových rozmÄ›rů Tato Äást ISO 2768 je urÄena ke zjednoduÅ¡enà pÅ™edpisu na výkresech a stanovà nepÅ™edepsané meznà úchylky délkových a úhlových rozmÄ›rů ve ÄtyÅ™ech tÅ™Ãdác ISO 2768 consists of the following parts, under the general title General tolerances: Part 1: Tolerances for linear and angular dimensions without individual tolerance indications This part is intended to simplify drawing indications and specifies general tolerances in four tolerance classes ÄŒSN ISO 2768-1 (01 4240) byla vydána v Å™Ãjnu 1992.
For new designs only the general tolerance according to DIN ISO 2768-1 should be valid ČSN ISO 2768-1 : Všeobecné tolerance. ISO 2768 - m or general tolerance ISO 2768 - m. GENERAL TOLERANCES FOR FORM AND POSITION (DIN ISO 2768 T2) STRAIGHTNESS AND FLATNESS Tolerance classRanges in nominal lengths in mm H K L up to 10 0.02 0.05 0.1 over 10 up to 30 0.05 0.1 0.2 over 30 up to 100 0.1 0.2 0.4 over 100 up to 300 0.2 0.4 0.8 over 300 up to 1000 0.3 0.6 1.2 over 1000 up to 3000 0.4 0.8 1.6 PERPENDICULARITY Tolerance classRanges in nominal lengths in mm H K L up to 100 0.2 0.4 0.6 over 100 up to 300 0.3 0.6 1 over 300 up to 1000 0.4 0.8 1.5 over 1000 up to 3000 0.5 0.8 2 SYMMETRY Tolerance classRanges in nominal lengths in mm H K L up to 100 0.5 0.6 0.6 over 100 up to 300 0.5 0.6 1 over 300 up to 1000 0.5 0.8 1.5 over 1000 up to 3000 0.5 1 2 RUN-OUT Tolerance class H K L 0.1 0.2 0.If general tolerances according to ISO 2768-1 are valid, the following has to be inserted in the title box, i.e. GENERAL TOLERANCES FOR LINEAR AND ANGULAR DIMENSIONS (DIN ISO 2768 T1) LINEAR DIMENSIONS: Tolerance class designation (description) Permissible deviations in mm for ranges in nominal lengths f (fine) m (medium) c (coarse) v (very coarse) 0.5 up to 3 0.05 0.1 0.2 - over 3 up to 6 0.05 0.1 0.3 0.5 over 6 up to 30 0.1 0.2 0.5 1.0 over 30 up to 120 0.15 0.3 0.8 1.5 over 120 up to 400 0.2 0.5 1.2 2.5 over 400 up to 1000 0.3 0.8 2.0 4.0 over 1000 up to 2000 0.5 1.2 3.0 6.0 over 2000 up to 4000 - 2.0 4.0 8.0 EXTERNAL RADIUS AND CHAMFER HEIGHTS Tolerance class designation (description) Permissible deviations in mm for ranges in nominal lengths f (fine) m (middle) c (coarse) v (very coarse) 0.5 up to 3 0.2 0.2 0.4 0.4 over 3 up to 6 0.5 0.5 1.0 1.0 over 6 1.0 1.0 2.0 2.0 ANGULAR DIMENSIONS Tolerance class designation (description) Permissible deviations in degrees and minutes for ranges in nominal lengths f (fine) m (middle) c (coarse) v (very coarse) up to 10 1 1 130' 3 over 10 up to 50 030' 030' 1 2 over 50 up to 120 020' 020' 030' 1 over 120 up to 400 010' 010' 015' 030' over 400 05' 05' 010' 020' Variations on dimensions without tolerance values are according to "DIN ISO 2768- mk". General Tolerances to DIN ISO 2768 The latest DIN standard sheet version applies to all parts made to DIN standards.