Precision Polishing Services
Precision spec finishes for shafts, rods, and bar stock — reducing friction, improving seal life, and meeting demanding surface-finish requirements.
Finish that performs
Surface finish is not cosmetic — it dictates how a part seals, slides, and survives. A polished shaft reduces friction and heat, extends seal and bearing life, and resists corrosion and wear. For hydraulic rods and sealing surfaces, the right Ra is the difference between a part that lasts and one that leaks.
We polish as a finishing step after grinding and turning, dialing in the exact surface specification your application calls for.
Benefits of polishing
Surface finish conversion chart
American standard finishes — roughness average (Ra) in microinches and micrometers, with the equivalent RMS value.
RMS ≈ Ra × 1.11 · Ra (µm) = Ra (µin) × 0.0254
Parts we polish
Polishing questions
What surface finish can you achieve?
We polish to finishes as fine as 8 Ra, matched to your drawing's specification.
Why does surface finish matter?
Smoother surfaces reduce friction and heat, extend seal and bearing life, and improve corrosion resistance — critical for hydraulic rods and sealing surfaces.
What's the difference between Ra and RMS?
Ra is the roughness average and RMS is the root-mean-square of the same surface profile. RMS runs about 11% higher than Ra (RMS ≈ Ra × 1.11) — see the conversion chart above.
Need a precision finish?
Send your finish spec and get a quote in under an hour. Houston-based, shipping nationwide.