TECHNICAL INFORMATON - Pneumatic Technical Information

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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
(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
-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

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