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/ Informazioni Tecniche / Pneumatic Sealing Elements / System Tolerances And Designs
System Tolerances And Designs
SYSTEM TOLERANCES AND DESIGNS
System tolerances are the important  factors on the life span of the sealing elements. Inappropriate dimensions, tolerances and not centered pneumatic cylinders make the sealing elements wear out in short period of time and the system do not give the required performance . All the dimensions and tolerances are indicated on the product pages in our catologue. Table 3 shows the general tolerances used in the pneumatic systems. The cylinder bore in pneumatic cylinders are manufactured from steel, soft metals such as aluminumum and special engineering plastics. Sliding surfaces should have the following mentioned operations (honed, grinded, etc) in order to obtain the required surface roughness values. Rods are produced from chrome plated steel (55 HRC) and should be grinded, polished. Other cylinder components are produced from steel, aluminum and special engineering plastics.


NOMINAL DIMENSION
(mm)
HOLE  TOLERANCES
(µm)
ROD  TOLERANCES
(µm)
> <= H8 H9  H10  H11  H12  e9  f7  f8 f9 h8  h9 h10   h11
  3 +14  +25 +40  +60 +100  -14  -6  -6  -6  0  0  0  0
-0  -0 -0 -0 -0  -39  -16  -20  -31  -14  -25  -40  -60
3 6 +18  +30 +48 +75 +120  -20  -10  -10  -10  0  0  0  0
-0  -0 -0 -0 -0   -50  -22  -28  -40  -18  -30  -48  -75
6 10 +22 +36 +58  +90 +150  -25  -13  -13  -13  0  0  0  0
-0 -0 -0 -0 -0   -61  -28  -35  -49  -22  -36  -58  -90
10 18 +27  +43 + 70 +110 +180  -32  -16  -16  -16  0  0  0  0
-0 -0 -0 -0 -0   -75  -34  -43  -59  -27  -43  -70  -110
18 30 +33 +52 + 84  +130 +210  -40  -20  -20  -20  0  0  0  0
-0  -0 -0  -0 -0   -92  -41  -53  -72  -33  -52  -84  -130
30 50 +39  +62 +100 +160 +250  -50  -25  -25  -25  0  0  0  0
-0  -0 -0 -0 -0  -112  -50  -64  -87  -39  -62  -100  -160
50 80 +46  +74 +120  +190 +300  -60  -30  -30  -30  0  0  0  0
-0  -0 -0 -0 -0   -134  -60  -76  -104  -46  -74  -120  -190
80 120 +54  +87 +140 +220 +350  -72  -36  -36  -36  0  0  0  0
-0  -0 -0 -0 -0  -159  -71  -90  -123  -54  -87  -140  -220
120 180 +63  +100 +160  +250  +400  -85  -43  -43  -43  0  0  0  0
-0  -0 -0 -0 -0  -185  -83  -106  -143  -63  -100  -160  -250
180 250 +72  +115 +185  +290 +460  -100  -50  -50  -50  0  0  0  0
-0  -0 -0 -0 -0  -215  -96  -122  -165  -72  -115  -185  -290
250 315 +81  +130 +210  +320 +520  -110  -56  -56  -56  0  0  0  0
-0  -0 -0 -0 -0  -240  -108  -137  -185  -81  -130  -210  -320
315 400 +89  +140  +230 +360 +570  -125  -62  -62  -62  0  0  0  0
-0  -0 -0 -0 -0  -265  -119  -151  -202  -89  -140  -230  -360
400 500 +97  +155 +250   +400 +630  -135  -68  -68  -68  0  0  0  0
-0  -0 -0 -0 -0  -290  -131  -165  -223  -97  -155  -250  -400




 






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