What Tight Tolerance Means Here
We define tight tolerance as repeatable, verified accuracy — not a one-off lucky part. For equipment manufacturers this is what lets assemblies fit, mechanisms move and optics align without rework. Typical achievable ranges on our equipment are in the ±0.005 mm class for critical features, with positional tolerances held across a batch.
Tight tolerance is a process, not a number on a drawing — it combines machine capability, fixturing, thermal control and measurement. CNC Machining · 5-Axis Machining
Achievable Ranges (representative)
| Feature | Representative capability |
|---|---|
| Linear dimension | ±0.005 mm class (critical features) |
| Positional tolerance | ±0.01 mm class between features |
| Diameter (turned) | Tight roundness and runout |
| Flatness / parallelism | Within drawing, verified by CMM |
| Surface finish | Down to Ra 0.2 µm where required |
Tolerances above are representative capabilities, not a guaranteed quote. Final achievable tolerance depends on part geometry, material and feature size — confirm on your drawings (TODO: verify against actual equipment).
How We Hold It
- Thermal control — stable environment and compensation
- 5-axis & single-setup — fewer fixturing errors
- In-process checks — first-article and periodic verification
- CMM verification — Zeiss CMM for final dimensional confirmation
Quality, Inspection & Traceability
For equipment manufacturers, one failed component can stop a production line or compromise a field product. ProtoTech provides dimensional inspection, inspection reports, material certification and full traceability — so your quality team can qualify us for recurring production with confidence.
Our in-house metrology includes a Zeiss coordinate measuring machine (CMM) for full dimensional inspection and First Article Inspection (FAI), plus a benchtop material spectrometer that verifies incoming stock against the specified grade. Every shipment can be supplied with EN 10204 3.1 material certificates and lot-level traceability, backed by ISO 9001:2015 (AENOR).
Why ProtoTech — A Precision Partner, Not a CNC Shop
Repeatability
Batches stay in spec, not just first parts.
CMM Verification
Every critical feature measured.
Process Control
Thermal and fixturing discipline.
Material Range
Metals and plastics, including special alloys.
Documentation
Reports and certs for qualification.
One Workflow
Machining and inspection under one roof.
Related Industries
Technical Resources
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