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- Politecnico di Milano
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- Energy Engineering
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- Disegno Tecnico Industriale
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Valori numerici degli scostamenti fondamentali degli alberi
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Valori numerici degli scostamenti fondamentali degli alberi – UNI EN 20286 Dimensione nominale (mm) Scostamenti superiori es in [μm] Scostamenti inferiori ei in [μm] Gradi di tolleranza IT5 e IT6 IT7 da IT4 a IT7 fino a IT3 e sopra a IT7 Gradi di tolleranza oltre fino a a* b* c cd d e ef ff fg g h js** j k k m n p r s t u v x y z za zb zc - 3* -270 -140 -60 -34 -20 -14 -10 -6 -4 -2 0 Scostamenti = ± 𝐼𝑇𝑛 2⁄ ; dove n è il valore del grado di tolleranza IT -2 -4 0 0 +2 +4 +6 +10 +14 +18 +20 +26 +32 +40 +60 3 6 -270 -140 -70 -46 -30 -20 -14 -10 -6 -4 0 -2 -4 +1 0 +4 +8 +12 +15 +19 +23 +28 +35 +42 +50 +80 6 10 -280 -150 -80 -46 -40 -25 -18 -13 -8 -5 0 -2 -5 +1 0 +6 +10 +15 +19 +23 +28 +34 +42 +52 +67 +97 10 14 -290 -150 -95 -50 -32 -16 -6 0 -3 -6 +1 0 +7 +12 +18 +23 +28 +33 +40 +50 +64 +90 +130 14 18 +39 +45 +60 +77 +108 +150 18 24 -300 -160 -110 -65 -40 -20 -7 0 -4 -8 +2 0 +8 +15 +22 +28 +35 +41 +47 +54 +63 +73 +98 +136 +188 24 30 +41 +48 +55 +64 +75 +88 +118 +160 +218 30 40 -310 -170 -120 -80 -50 -25 -9 0 -5 -10 +2 0 +9 +17 +26 +34 +43 +48 +60 +68 +80 +94 +112 +148 +200 +274 40 50 -320 -180 -130 +54 +70 +81 +97 +114 +136 +180 +242 +325 50 65 -340 -190 -140 -100 -60 -30 -10 0 -7 -12 +2 0 +11 +20 +32 +41 +53 +66 +87 +102 +122 +144 +172 +226 +300 +405 65 80 -360 -200 -150 +43 +59 +75 +102 +120 +146 +174 +210 +274 +360 +480 80 100 -380 -220 -170 -120 -72 -36 -12 0 -9 -15 +3 0 +13 +23 +3 +51 +71 +91 +124 +146 +178 +214 +258 +335 +445 +585 100 120 -410 -240 -180 +54 +79 +104 +144 +172 +210 +254 +310 +400 +525 +690 120 140 -460 -260 -200 -145 -85 -43 -14 0 -11 -18 +3 0 +15 +27 +43 +63 +92 +122 +170 +202 +248 +300 +365 +470 +620 +800 140 160 -520 -280 -210 +65 +100 +134 +190 +228 +280 +340 +415 +535 +700 +900 160 180 -580 -310 -230 +68 +108 +146 +210 +252 +310 +380 +465 +600 +780…
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