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Help CenterDIN 2391 St52 Hydraulic Cylinder Tubes for Construction Machine
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Specifications
DIN 2391 st52 hydraulic cylinder tubes for1. ST52 DIN2391 Honed Tube
2. ID30-500mm WT3-40mm
3. BKS
DIN 2391 st52 hydraulic cylinder tubes for construction machine
Hydraulic Cylinder Honed Tube/Honed Tube/Burnished Tube
HONED TUBES FOR HYDRAULIC & PNEUMATIC CYLINDERS
1. MATERIAL SPECIFICATION AND REF. DOCUMENT
ST52,BK+S,DIN2391 OR Equivalent
2. CHEMICAL COMPOSITION (%)
C (Max) Mn(Max) Si(Max) S(Max) P(Max)
0.22 1.6 0.5 0.035 0.035
3. MECHANICAL PROPERTIES
Elongation(Min) Y.S (Min.) UTS (Min.)
≥15 470 N/MM2 580 N/MM2
4. SUPPLY CONDITION
Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished
5. SURFACE ROUGHNESS
Ra = 0.4~0.8Micron
6. TOLERANCES ON INNER DIA
ISO H8
7.TOLERANCES ON WALL THICKNESS
≤ Dia120 +/-10 % of wall thickness
≥ Dia120 +/-10 % of wall thickness
8. STRAIGHTNESS
≤1 mm/M
9. OD TOLERANCE
≤ Dia 40 +/-0.2 mm
≥ Dia 40 ≤ Dia 100 +/-0.3mm
≥ Dia 100 +/-0.5mm
10. LENGTH AND CUT TOLERANCE
Length ≤ 500mm , +2mm
> 500mm ≤ 2000mm, +3mm
> 2000mm ≤ 5000mm, +5mm
> 2000mm ≤ 7000mm, +10mm
11. TUBE ENDS
Tube ends shall be cut nominally square to the axis and free from burs
12. APPEARANCE
Tube shall have a smooth internal and external surface consistent with cold working
process, tube inner surface should be free from rust, scratches and other surface
irregularities.
13. CERTIFICATION
Material certificates will be send to u if want.
14. PACKING
Anti rust oil to be applied on material and both ends closed by plastic cap and
bundled by steel strips,braiding parcel.
15. SCOPE
Hydraulic cylinder tube for swivel crane, injection machine and construction
machine application
|
Processing
|
Cylinder diameter |
Length /mm |
Straightness |
Size accuracy |
Wall thickness/mm |
Inner bore roughness |
Cold-drawn |
ID30~OD250 |
≤13M |
0.3~1.0mm/m |
H9-H11 |
±8% |
0.8~1.6um |
Honed tube |
ID50~OD325 |
≤10M |
0.3~1.0mm/m |
H7-H9 |
±8% |
0.4~0.8um |
Mechanics performance
Material |
Tensile strength |
Yield strength |
Elongation
|
Hardness |
Ck20 |
510 σ N/mm2 |
500σsN/mm2 |
5δs% |
175HB |
Ck45 |
660 σN/mm2 |
630σsN/ mm2 |
4δs% |
207HB |
ST52 |
580σ N/mm2 |
420σsN/ mm2 |
10δs% |
190HB |
27SiMn |
840σ N/mm2 |
805σsN/ mm2 |
7.5δs% |
230HB |
ID size |
ID deviation (mm) |
|||
H7 |
H8 |
H9 |
H10 |
|
30 |
+0.021 0 |
+0.033 0 |
+0.052 0 |
+0.084 0 |
>30~50 |
+0.025 0 |
+0.039 0 |
+0.062 0 |
+0.100 0 |
>50~80 |
+0.030 0 |
+0.046 0 |
+0.074 0 |
+0.120 0 |
>80~120 |
+0.035 0 |
+0.054 0 |
+0.087 0 |
+0.140 0 |
>120~180 |
+0.040 0
|
+0.063 0 |
+0.100 0 |
+0.160 0 |
>180~250 |
+0.046 0 |
+0.072 0 |
+0.115 0 |
+0.185 0 |
>250~315 |
+0.052 0 |
+0.081 0 |
+0.130 0 |
+0.210 0 |
>315~400 |
+0.0527 0 |
+0.089 0 |
+0.140 0 |
+0.230 0 |
honed tube honed tube honed tube din 2391 st52 honed tube din 2391 st52 honed tube din 2391 st52 honed tube
DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine
DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine DIN 2391 st52 hydraulic cylinder tubes for construction machine
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