Linear Tolerance (mm)
Dimension (mm) | ≤10 | 10～25 | 25～50 | 50～75 | 75～100 | 100～150 | 150～200 | 200～250 | ＞250 |
Normal (mm) | ±0.12 | ±0.25 | ±0.30 | ±0.50 | ±0.65 | ±0.80 | ±1.50 | ±1.80 | ±0.80% |
Premium (mm) | ±0.10 | ±0.15 | ±0.25 | ±0.40 | ±0.45 | ±0.70 | ±1.00 | ±1.10 | ±0.50% |
Limit Dimension for Cast Holes and Slots
Items | Hole Dia. (mm) | L/D Hole depth/Pore diameter |
| 2-3 | L/D≤1 |
4-7 | L/D≤2.5 | |
≥8 | L/D≤3.5 | |
| 2-3 | L/D≤2 |
4-7 | L/D≤5 | |
≥8 | L/D≤10 | |
Deeper and more complicated holes and slots can be cast by using soluble wax cores and ceramic cores. | ||
Angle Tolerance
Angle Tyoe |
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Normal | ±1° | ±2° | ±2° |
Premium | ±0.5° | ±1° | ±1° |
Avoid the quick changes of casting structure,use fillet radius on internal angle when possible.which is no less than RO.3. |
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Tolerance for Flatnes,Straightness and Roundness
Dimension(mm)
| Normal(mm) | Premium(mm) |
0-25 | 0.2 | 0.1 |
25-50 | 0.4 | 0.2 |
50-100 | 0.6 | 0.3 |
100-150 | 0.8 | 0.4 |
Size and Weight Range
Items(mm) | Size | Premium |
Outline Dimension(mm) | 1000X620X380 | ＜100 |
Weight(kg) | 0.01-120 | 0.1-1.5 |
Min.Wall Thickness | 1.0 | 5-10 |
Surface Roughness (Ra/μm)
Ra6.3～3.2 |