|
Specification: |
Cylinder boreφ30-700mm |
|
Wall Thickness: |
3-50mm |
|
Material: |
20 45 16Mn 27SiMn 20Mn2 |
|
Srandard: |
GB8713-88 |
Hydraulic/Pneumatic precision cylinder-barrel
Variety
|
Assembly |
Cylinder bore |
Length |
Straightness |
Dimensional accuracy |
Bore roughness |
|
Cold drawing |
0 30-250 |
10M |
0.3-1.0 / 1000 |
H9-H I I |
0.8-1.6 |
|
Honing |
0 40-7(X) |
≤12M |
0.3-1.0 / 1000 |
H7-H9 |
0.4-0.8 |
|
Mechanical properties
|
Type Of Steel |
|
Cold Drawn & Rolled Tube |
Metallic cut pipe |
|
20 |
Tensile strength N／mm2 |
≥510 |
≥390 |
|
Elongation percentage％ |
≥5 |
≥20 |
|
45 |
Tensile strength N／mm2 |
≥647 |
≥590 |
|
Elongation percentage ％ |
≥4 |
≥4 |
|
16Mn |
Tensile strength N／mm2 |
≥640 |
|
|
Elongation percentage ％ |
≥10 |
|
|
20Mn2 |
Tensile strength N／mm2 |
≥672 |
|
|
Elongation percentage ％ |
≥7.5 |
|
|
27SiMn |
Tensile strength N／mm2 |
≥840 |
|
|
Elongation percentage ％ |
≥7.5 |
| |
|
Dimensional tolerance
|
Size of ID |
Deviation of ID |
Tolerance of wall thickness |
|
H7 |
H8 |
H9 |
H10 |
H11 |
|
30 |
+0.021
0 |
+0.033
0 |
+0.052
0 |
+0.084
0 |
+0.130
0 |
5% |
|
>30-50 |
+0.025
0 |
+0.039
0 |
+0.062
0 |
+0.100
0 |
+0.160
0 |
|
>50-80 |
+0.030
0 |
+0.046
0 |
+0.074
0 |
+0.120
0 |
+0.190
0 |
|
>80-120 |
+0.035
0 |
+0.054
0 |
+0.087
0 |
+0.l40
0 |
+0.220
0 |
|
>120-180 |
+0.040
0 |
+0.063
0 |
+0.100
0 |
+0.160
0 |
+0.250
0 |
|
>180-250 |
+0.046
0 |
+0.072
0 |
+0.115
0 |
+0.185
0 |
+0.290
0 |
|
>250-315 |
+0.052
0 |
+0.081
0 |
+0.130
0 |
+0.210
0 |
+0.320
0 |
|
>315-700 |
+0.057
0 |
+0.089
0 |
+0.140
0 |
+0.230
0 |
+0.360
0 |
|
| 
