Q
What units are used for the dimensions and tolerances in the table?
A
All dimensions — including outer diameter, inner diameter, height, and their respective tolerances — are expressed in millimeters (mm).
Q
Why do larger outer diameters have higher tolerance values?
A
As the outer diameter increases, maintaining the same absolute tolerance becomes more challenging due to material behavior and manufacturing constraints. Larger parts naturally require slightly wider tolerance ranges while still meeting precision standards.
Q
Can custom inner diameters be provided outside the listed options?
A
The table lists standard inner diameter options for each outer diameter size. For custom inner diameter requirements beyond the listed values, please contact us directly to discuss feasibility and specifications.
Q
Is the height range customizable within the specified limits?
A
Yes. The height column indicates the available range for each size. You can specify any height within the given range, and it will be manufactured to the corresponding height tolerance listed.
Q
Are the tolerances bilateral (both plus and minus)?
A
Yes. All tolerances listed in the table are bilateral, meaning the actual dimension can deviate by the stated value in either the positive (+) or negative (−) direction from the nominal dimension.
Q
Why is the height tolerance sometimes different from the outer and inner diameter tolerances?
A
For larger sizes (e.g., outer diameter 150 mm and above), the height tolerance is set tighter than the diameter tolerances. This is because height precision is often more critical for proper fit and function in assembled applications, and it can be more accurately controlled during the manufacturing process.
