Tolerances We Work With at Schilthorn Precision
Every product we deliver at Schilthorn Precision carries the mark of our decades-long experience in manufacturing high-quality, high-performance components and assemblies. Every project we undertake at our facility treats precision and accuracy as primary characteristics. Over the years, these qualities have made us known for high-precision machining for HVAC, automobile, space and aerospace parts.
Our capability covers a wide range and variety of materials, which we build into our services. Our components are manufactured on advanced, rigid and accurate machining centres. The rigidity of our CNC machines lets us produce a wide array of precision-engineered components and features, to a tolerance band of ±10 microns.
Holding tight tolerances consistently, batch after batch, requires more than accurate machines. At Schilthorn Precision, our process starts at the design stage, where our engineers review your drawing to confirm which tolerances are achievable for the chosen material, geometry and process. This helps avoid costly rework and ensures your specification is met on the first production run, not just the first part off the machine.
Every component we produce is verified against its specified tolerance using our in-house measurement and metrology setup, with on-line inspection and statistical process control tracking every stage of production. This means tight tolerances are maintained across your full order quantity, whether you need a handful of prototypes or a production batch of thousands.
Tolerance Specifications
At Schilthorn Precision, we hold tight tolerances across every geometric characteristic, not just dimensional size. The table below lists our standard tolerance specifications for flatness, circularity, cylindricity, parallelism, perpendicularity and run out, each with its GD&T symbol.
| Title | Value | Symbol |
|---|---|---|
| Flatness | ± 0.01 mm, for the entire surface area of the part. |  |
| Circularity | ± 0.01 mm, for parts as small as 2mm in diameter. |  |
| Cylindricity | ± 0.01 mm, for the entire length of the part. |  |
| Parallelism | ± 0.01 mm, between the Datum & Surface. |  |
| Perpendicularity | 90° ± 0.01, between the Datum & axis. |  |
| Run out | With a variance less than 10 µm |  |
We hold flatness, cylindricity and circularity to ±0.01 mm, including on parts as small as 2 mm in diameter, and we control run out to a variance of less than 10 μm. Parallelism between datum and surface, and perpendicularity between datum and axis, are held to ±0.01 mm and 90° ± 0.01° respectively. These tolerances are measured and verified using the metrology and inspection setup described on our Measurement Capabilities page.
Need a tolerance not listed here? Contact Schilthorn Precision with your drawing, and we’ll confirm what we can hold.
