These product specifications ensure that the hard chrome plated bars meet high standards of precision, durability, and performance in various applications, especially in hydraulic systems.
Hard Chrome Plated Bar
Material: The hard chrome plated bars are available in various materials including CK45, 1045, 4140, 4340, JIS 45C, 40Cr, 42CrMo, 20MnV6, SS431, SS430, Duplex2205, Stainless Steel 304/316, and more. These materials offer different properties and suitability for various applications.
Diameter: The diameter range of the hard chrome plated bars is 6mm to 500mm, providing options for different sizes and applications.
Length: The maximum length of the bars is 13m, allowing flexibility in accommodating various cylinder designs and requirements.
Tolerance on Diameter: The bars conform to ISO f7 tolerance standards, ensuring precision and compatibility with other components.
Ovality: The ovality of the bars is specified as half of the tolerance specified in ISO f7. This ensures the roundness and dimensional accuracy of the bars.
Chrome Thickness: The chrome plating layer on the bars has a minimum thickness of 20 microns, providing excellent corrosion resistance and durability.
Hardness of the Chrome Layer: The chrome layer on the bars has a minimum hardness of 850HV, ensuring high wear resistance and long service life.
Surface Roughness: The surface roughness of the bars is specified as Ra ≤ 0.2 Micron, ensuring a smooth and precise finish. This level of roughness contributes to optimal sealing and overall performance.
Straightness: The straightness tolerance of the bars is ≤ 0.2mm/m, ensuring proper alignment and smooth operation.
Supply Condition: The hard chrome plated bars are available in different supply conditions, including hard chrome plated, hardened and tempered, and induction hardened. This allows for customization based on specific application requirements.
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Size List : all dimensions are by metric, and the tolerance per ISO system f8 specification. |
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Dia. (mm) |
6 |
7 |
8 |
10 |
12 |
14 |
15 |
16 |
18 |
|
Tolerance (mm) |
-0.013 |
-0.013 |
-0.013 |
-0.016 |
-0.016 |
-0.016 |
-0.016 |
-0.016 |
-0.020 |
|
Dia. (mm) |
19 |
20 |
22 |
22.4 |
25 |
25.4 |
28 |
30 |
31.5 |
|
Tolerance (mm) |
-0.020 |
-0.020 |
-0.020 |
-0.020 |
-0.020 |
-0.020 |
-0.020 |
-0.025 |
-0.025 |
|
Dia. (mm) |
31.75 |
32 |
35 |
35.5 |
36 |
38 |
38.1 |
40 |
44.45 |
|
Tolerance (mm) |
-0.025 |
-0.025 |
-0.025 |
-0.025 |
-0.025 |
-0.025 |
-0.025 |
-0.025 |
-0.025 |
|
Dia. (mm) |
45 |
50 |
50.8 |
55 |
56 |
57.15 |
60 |
63 |
63.5 |
|
Tolerance (mm) |
-0.025 |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
|
Dia. (mm) |
65 |
70 |
71 |
75 |
76.2 |
80 |
85 |
90 |
100 |
|
Tolerance (mm) |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
-0.030 |
-0.036 |
-0.036 |
-0.036 |
-0.036 |
|
Dia. (mm) |
101.6 |
110 |
120 |
- |
- |
- |
- |
- |
- |
|
Tolerance (mm) |
-0.036 |
-0.036 |
-0.036 |
- |
- |
- |
- |
- |
- |
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★Special Size and requirement can be customers make. |
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