High-Precision Grinding and Honing: Micron-level tolerances
What is high-precision machining?
High Precision refers to machining operations that achieve tolerances in the micron range.
At ZEDCE, this encompasses internal and external cylindrical grinding, surface grinding, and honing.
Demanding trades that require expertise and specialized equipment.
.jpg)
Cylindrical and Surface Grinding: The precision operation of machining
Grinding is considered the ultimate precision operation in machining.
It achieves tolerances of less than 5 microns with excellent repeatability.
It is a trade learned in school that requires years of practice to master every scenario.
At ZEDCE, around a hundred employees work daily on parts accurate to the micron.
Grinding is relevant to all industry sectors.
At Zedce, we have mastered all the main precision grinding processes to meet every dimensional and surface finish requirement.
Our services include:
‍
-Surface grinding (flat surfaces, faces, bearing surfaces).
-External cylindrical grinding between centers and with collets.
-Internal cylindrical grinding (cylindrical or conical bores).
-Centerless through-feed grinding, for long production runs in continuous feed.
-Centerless plunge grinding, ideal for short parts or complex geometries.
-Profile and special shape grinding, for parts requiring more complex geometries.
This combination of technologies allows us to grind everything from simple shafts to complex parts of revolution, with tight tolerances and flawless surface finishes.
Grinding is considered the ultimate precision operation in machining.
It achieves tolerances of less than 5 microns with excellent repeatability.
It is a trade learned in school that requires years of practice to master every scenario.
At ZEDCE, around a hundred employees work daily on parts accurate to the micron.
Grinding is relevant to all industry sectors.
At Zedce, we have mastered all the main precision grinding processes to meet every dimensional and surface finish requirement.
- Surface grinding (flat surfaces, faces, bearing surfaces).
- External cylindrical grinding between centers and in collets.
- Internal cylindrical grinding (cylindrical or conical bores).
- Through-feed centerless grinding for long production runs in continuous operation.
- Plunge centerless grinding, ideal for short parts or those with complex geometries.
- Profile and special shape grinding for parts requiring more complex geometries.
Precision internal grinding
Internal grinding involves using a grinding wheel to abrade the internal bores of a part—whether blind or through holes—to achieve tolerances and surface finishes that machining alone cannot guarantee.
ZEDCE applies this to parts where internal geometry is directly functional: bearing housings, hydraulic seal seats, and guide bores.
Achievable tolerances are 0.01 to 0.02 mm on the internal diameter, with an Ra finish of 0.1 to 0.2 µm.
When the application demands even more (e.g., critical seals), internal honing takes over.
Internal honing: extreme micron-level precision
Internal honing is our specialty.
Why honing?
Because when dealing with ultra-tight tolerances (3 microns), achieving perfect geometry and roughness (Rz, Rk, RpK, RvK, Ra...) is impossible with conventional grinding.
.jpg)
Flat lapping: extreme flatness and controlled surface finish
Flat lapping is a finishing process using free abrasive between the part and a lapping plate.
The result: flat surfaces with Ra finishes as low as 0.2 µm and dimensional tolerances in the micron range.
Applications are directly linked to critical functions, such as sealing faces, metrological reference surfaces, and bearing faces requiring perfect contact between parts.
.jpg)
.webp)
.webp)
.webp)
