
Secure coating-to-substrate interface
The substrate chemistry and microstructure promote dense diamond nucleation, reducing the risk of premature coating separation in abrasive graphite cutting.
3DEM · Standard order code with online price
3F Diamond Square End · Order code: 3DEM 120 250 080
D12*25FL*80 OAL*12SH*3F diamond-coated square end graphite end mill in the 3DEM series. Online reference price USD 65.60/pc as of 2026-Sep-14; order code 3DEM 120 250 080.
Price available online
$65.60
USD / pc · FOB China
Price as of 2026-Sep-14
Published online for purchasing budgets and size comparison
Standard terms are 100% T/T in advance with a reference lead time of 10–15 working days. Final price and delivery are confirmed against quantity, tolerance, and order requirements.
D12*25FL*80 OAL*12SH*3F engineering specification
Order code: 3DEM 120 250 080
All linear dimensions in mm
| Parameter | Symbol | Value | Purchasing / inspection note |
|---|---|---|---|
| Cutter diameter | D | 12 mm | Nominal cutting diameter; default tolerance -0.020 / 0 mm |
| Ball / corner radius | R | — | Not applicable to this specification |
| Flute length | L1 | 25 mm | Cutting edge length |
| Neck diameter | dN | — | Neck diameter not specified for this item |
| Neck length | L2 | — | Neck length not specified for this item |
| Shank diameter | d | 12 mm | Nominal shank diameter |
| Overall length | L | 80 mm | Overall length (OAL) |
| Flute count | Z | 3 | Number of flutes |
Diamond coating and edge retention
D12*25FL*80 OAL*12SH*3F combines a fine-grain carbide substrate with a graphite-specific diamond coating. On this square end tool, lower edge wear helps retain the specified dimensions and cutting profile during production.

The substrate chemistry and microstructure promote dense diamond nucleation, reducing the risk of premature coating separation in abrasive graphite cutting.

In the shown carbon-resin test, diamond coating records about 0.006 mm edge retreat versus about 0.023 mm for TiAlN. Lower wear supports more consistent machined dimensions.

AK06 uses high-quality fine WC powder with controlled grain size and morphology, providing a diamond-compatible substrate for D12*25FL*80 OAL*12SH*3F.
ZOLLER dimensional inspection

Every tool is checked for critical dimensions and cutting geometry using an optical measurement system. A dimensional report for order code 3DEM 120 250 080 is available for incoming inspection and traceability.
Graphite machining parameters
Starting parameters for this flute-count and geometry combination are confirmed against graphite grade, effective overhang, spindle limit, and target surface finish.
Nearby 3DEM standard sizes
Order code: 3DEM 120 450 110
Ø12 · 3F · OAL 110 mm
Order code: 3DEM 120 550 160
Ø12 · 4F · OAL 160 mm
Order code: 3DEM 100 250 080
Ø10 · 3F · OAL 80 mm
Order code: 3DEM 100 400 110
Ø10 · 3F · OAL 110 mm
Order code: 3DEM 100 500 160
Ø10 · 3F · OAL 160 mm
Order code: 3DEM 080 240 070
Ø8 · 3F · OAL 70 mm
Send the order quantity, work material, machine setup, and target delivery. We will confirm order pricing, production scheduling, and dimensional-report requirements using the 2026-Sep-14 online reference price as the starting point; order code 3DEM 120 250 080.
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