Surface Roughness Tester
Contact profilometry verifies surface finish on critical mating faces, sealing surfaces, and cosmetic zones — before and after anodizing, passivation, or polishing operations.
Accuracy & Specifications
| Parameter | Specification |
|---|---|
| Ra Measurement Range | 0.005 – 16 μm |
| Rz Measurement Range | 0.02 – 200 μm |
| Vertical Resolution | 0.001 μm (0.1 nm display resolution) |
| Cutoff Length (λc) | 0.08 – 8 mm (per ISO 4287) |
| Stylus Radius | 2 μm (standard) · 5 μm (optional) |
| Standard Compliance | ISO 4287 · ISO 1997 · JIS B0601 |
| Typical Verification | Ra 0.4 – 6.3 μm on machined surfaces |
| Calibration | ISO 17025 reference specimens · annual |
Inspection Capabilities
- Ra, Rz, Rmax, Rq parameter reporting
- Pre- and post-finishing surface verification
- Sealing face and O-ring groove finish checks
- Bearing surface roughness confirmation
- Profile graph export for customer quality files
Typical Applications
- Hydraulic valve bodies
- Medical instrument handles
- Heat sink mating surfaces
- Optical mounting plates
- Food-grade stainless components
Calibration & Traceability
Calibrated against ISO 17025 traceable roughness reference specimens. Certificate available for audit.
Frequently Asked Questions
What Ra should I specify on my drawing?
Ra 3.2 μm is typical as-machined general. Ra 0.8 μm for sealing surfaces. Ra 0.4 μm for precision optics mounting — may require grinding or polishing beyond machining alone.
Do you measure surface finish after anodizing?
Yes — we verify finish before and after coating when specified. Anodizing typically does not significantly change Ra on external surfaces; masking areas remain as-machined.
Need Surface Roughness Tester on Your Order?
Specify inspection requirements on your drawing or RFQ — we'll confirm scope and include the right reports in your quote within 24 hours.
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