System Tolerances And Designs
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- 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 |
HOLE TOLERANCES |
ROD TOLERANCES |
||||||||||||
| > |
<= |
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 |
-2 |
-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 |
||