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| Outer Diameter (mm) | Inner Diameter (mm) | Height (mm) | Outer Diameter Tolerance (mm) | Inner Diameter Tolerance (mm) | Height Tolerance (mm) |
|---|---|---|---|---|---|
| 20 | 10 | 5～20 | ±0.2 | ±0.2 | ±0.2 |
| 30 | 15 / 20 | 5～30 | ±0.2 | ±0.2 | ±0.2 |
| 40 | 20 / 30 | 5～30 | ±0.2 | ±0.2 | ±0.2 |
| 50 | 30 / 40 | 5～50 | ±0.3 | ±0.3 | ±0.3 |
| 60 | 40 / 50 | 5～50 | ±0.3 | ±0.3 | ±0.3 |
| 80 | 50 / 60 / 70 | 10～60 | ±0.3 | ±0.3 | ±0.3 |
| 100 | 60 / 80 / 90 | 10～80 | ±0.5 | ±0.5 | ±0.5 |
| 120 | 80 / 100 | 10～80 | ±0.5 | ±0.5 | ±0.5 |
| 150 | 100 / 120 | 10～100 | ±0.8 | ±0.8 | ±0.5 |
| 200 | 150 / 180 | 10～120 | ±1.0 | ±1.0 | ±0.8 |
| 250 | 200 / 220 | 10～120 | ±1.2 | ±1.2 | ±0.8 |
| 300 | 250 / 280 | 10～150 | ±1.5 | ±1.5 | ±1.0 |
The maximum outer diameter listed in the standard specification table is 300 mm, with available inner diameters of 250 mm or 280 mm and a height range of 10 to 150 mm.
Larger components inherently involve greater material volume and more complex manufacturing processes, making it technically more challenging to maintain the same absolute precision. Tolerance values are scaled accordingly to reflect realistic and industry-standard manufacturing capabilities.
Yes, custom inner diameter options may be available depending on your specific application requirements. Please contact our technical team with your exact specifications, and we will assess feasibility and provide a tailored solution.
Not always. For smaller sizes (up to 80 mm outer diameter), the height and diameter tolerances are identical. However, for larger sizes (150 mm and above), the height tolerance is tighter than the diameter tolerance — for example, at 200 mm outer diameter, diameter tolerance is ±1.0 mm while height tolerance is ±0.8 mm.
For components with a 20 mm outer diameter and 10 mm inner diameter, the minimum available height is 5 mm, with a maximum of 20 mm, all within a tolerance of ±0.2 mm.
The selection of the inner diameter depends on your application's wall thickness requirements and structural load conditions. A smaller inner diameter provides a thicker wall and greater strength, while a larger inner diameter reduces material and weight. We recommend consulting our engineering team to determine the optimal configuration for your use case.
