Surface Grinding
Surface grinding of flatness-critical faces in hardened and soft stock, holding flatness and parallelism to ±0.002 mm where milling cannot.
Surface Grinding for Precision Parts
Some faces on your drawing carry flatness, parallelism or thickness callouts that a milling cutter cannot hold, especially after heat treatment distortion. Our surface grinders take those faces to size with a bonded wheel, removing only microns per pass. Datum faces, sealing faces and gaging surfaces come off the machine flat and clean, without a secondary lapping step in most cases.
What We Grind
- Datum and mounting faces on tooling and fixtures
- Sealing faces on housings and cover plates
- Thickness-critical shims, wear plates and gage blocks
- Hardened steel parts ground after heat treatment (up to HRC 55)
Capability Detail
- Flatness and parallelism to ±0.002 mm on ground faces
- Surface finish down to Ra 0.4 on ground surfaces
- Thickness control across the full plate, not just local spots
- Parts verified on Hexagon and Zeiss CMMs after grinding
Where Grinding Fits in Your Route
Grinding usually sits between heat treatment and final inspection. We plan the route for you: mill the part with grind stock, harden, grind the critical faces, then verify everything on CMM. One factory, one route, one report.
Engineering reference behind this page
The tables and bands the sections above rest on, kept by the same engineering team that runs the work.
- Bands below cuttingThe accuracy grinding reaches and the cost step to get there.
- Ra from grindingWheel grade, dressing and the surface they leave.
- Roundness and parallelismForm callouts that grinding is specified to hold.
Full index, including material grades and surface finish data: engineering reference hub.