Case study
Reamers
D6×20×80 Solid Carbide Reamer: H7 Tolerance, Ra 1.6 µm Finish
31 Mar 2026Reamer · H7 · Ra 1.6 · D6×20×80 · Solid carbide
For standard reaming, the key challenge is not only reaching the target H7 diameter, but doing it consistently across production cycles while maintaining a smooth bore surface in the Ra 1.6 µm class.
Key Specifications (customizable)
| Technical Specifications | |
|---|---|
| Feature | Specification |
| Diameter | D6 mm |
| Cutting Length | 20 mm |
| Overall Length | 80 mm |
| Tolerance | H7 class (customizable) |
| Surface Finish | Ra 1.6 µm class |
| Material | Solid carbide (tungsten carbide) |
Stable centering guidance
Reamer geometry designed to keep the tool tracking consistently inside the bore for repeatable H7 results.
Finish-focused edge preparation
Edge conditioning and flute profile selected to achieve a smooth Ra 1.6 µm class bore wall.
Production repeatability
Ground for stable performance across multiple cycles, reducing drift between first article and serial acceptance.
Coating & coolant options
PVD coatings and coolant strategy are selected to match your workpiece material and speed/feed programme.
If your drawing specifies H7 tolerance with Ra 1.6 µm class results, send bore diameter, cutting length/overall length, material and hardness, and the preceding process (drill / semi-bore size). We will confirm geometry, coating choice, and inspection criteria to match your production acceptance.
Custom tooling
Discuss your next custom tool
Send drawings, material, and target cycle time. Our application team typically responds within one business day with feasibility feedback and next steps.