Services
Precision Grinding
Surface, cylindrical, internal, and centerless grinding — sub-micron precision machining.
Capabilities
By Grinding Process
We offer four grinding processes for sub-micron precision finishing.
Surface Grinding
- — Flat die plates
- — Mold inserts
- — Gauge blocks
- — Parallel plates
Precision Tolerance
±0.01mm
Requires precision finishing & inspection. Subject to drawing review.
Common Materials
Tool Steel D2/H13, Stainless 440C, Ceramic substrates
Cylindrical Grinding
- — Precision shafts
- — Punches & die pins
- — Hydraulic rods
- — Spindle journals
Precision Tolerance
±0.01mm
Requires precision finishing & inspection. Subject to drawing review.
Common Materials
Steel 4140/4340, Stainless 304/316, Tungsten Carbide
Internal Grinding
- — Bore finishing
- — Hydraulic cylinder bores
- — Bearing seats
- — Nozzle orifices
Precision Tolerance
±0.01mm
Requires precision finishing & inspection. Subject to drawing review.
Common Materials
Steel H13/S136, Stainless 303, Aluminum 7075
Centerless Grinding
- — High-volume pins
- — Needle rollers
- — Piston pins
- — Guide rods
Precision Tolerance
±0.01mm
Requires precision finishing & inspection. Subject to drawing review.
Common Materials
Bearing Steel GCr15, Steel 1045, Stainless 303
Quality Control
Quality Standards
Every ground part undergoes rigorous inspection for surface integrity and dimensional accuracy.
Surface Roughness
Ra 0.1-0.4μm achievable. Measured by profilometer on every critical surface.
Roundness & Flatness
Roundness ≤0.001mm, flatness ≤0.002mm. Verified by roundness tester and optical flat.
Material Integrity
No thermal damage guaranteed. Nital etch inspection available for hardened steels.
Dimensional Report
Full inspection reports (FAI) and CMM data (from our group's shared metrology center on request) available for each batch. Strictly follows ISO 2768-m tolerances and AQL 2.5 sampling to ensure critical dimensions are precise and traceable.
Need Ground Parts?
Upload your drawings. Our engineers will provide a quote and DFM feedback within 24 hours.