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High Strength SM Cone Shape, 6 mm 1/4 inch Die Grinder Bit (Polished)
The SM cone with polished flutes – hard-zone capability with a finish-ready surface.
Design and Construction
An SM cone with polished flutes: the high-hardness profile plus a polished surface that sheds chips and leaves a finer finish – hard-zone cutting that comes out looking finished.
How It Works
Polished flanks resist chip welding even on gummy hard steels; the same pass that cuts 55 HRC leaves a surface one grade finer than ground flutes.
Applications
Hardened dies needing finish, tool-steel polishing prep, hard-facing finishing passes.
Field Cases
- Die polish prep: 58 HRC surfaces came off the cone ready for stones.
- Hard-facing shop: finishing passes left near-polish surfaces.
- Tool room: polished flutes stayed clean through long hard-steel sessions.
Performance Data
| Metric | Value / Observation |
|---|---|
| Profile | SM cone, high-hardness |
| Surface | Polished flutes |
| Workpiece | 50-65 HRC |
| Finish gain | One grade finer than ground flutes (typical) |
Suitable Materials
Hardened steels 50-65 HRC, tool steels.
Material Comparison: Polished vs Ground Flutes on Hard Steels
What polishing adds on 50-65 HRC work:
| Factor | Polished (this bit) | Ground Flutes |
|---|---|---|
| Chip welding | Resisted even on gummy hard steels | Possible |
| Finish left | One grade finer | Standard hard-steel finish |
| Cleaning stops | Fewer | More |
| Polish prep | Ready for stones | Needs dressing first |
| Both stocked | Yes – pick by job |
Delivery Scope
Bit in tube; polished and ground versions stocked.
Why Choose VPOINT
Hard-zone cutting that finishes as it cuts.
Precision & Quality Control
Polish quality sampled per batch alongside geometry.
Specifications
Finish information:
| Item | Specification |
|---|---|
| Code | SM cone |
| Surface | Polished flutes |
| Workpiece | 50-65 HRC |
| Shank | 6 mm (1/4″) |
Frequently Asked Questions
Polishing on hard steel?
Yes – the finish gain is most visible there.
Both versions stocked?
Yes – polished and ground.
Ready for stones?
Typically yes after the pass.
Speed?
Reduced for the hard zone.
Chip welding?
Polished flutes resist it even on gummy alloys.
Related Search Terms
polished SM cone burr, hard steel polished burr, finish ready cone, die polish prep, polished flute carbide, 58 HRC finishing, hard zone polish, SM polished, die grinder cone polished, tool steel polish, hard facing finish, polished hard steel, clean cutting cone, finish as you cut, polished carbide cone
