MRS Series (Z4)
Serrated (chip-breaker) roughing end mills
Materials / applications
- PUnalloyed steels
- PFree-machining steels
- PLow-alloy steels
- MStainless steels
- KCast iron
| Product group | Solid Carbide End Mill |
|---|---|
| Diameter range | Ø6 - Ø20 |
| Number of flutes (Z) | 4 |
| Coating | AlCrN |
| Helix angle | ~45° |
| Workpiece hardness | <56 HRC |
See the product catalogue for dimension tables and order codes. Contact our technical team for special dimensions and tolerances.
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Dimensions and order codes
Values are taken from the table in the Geppetto product catalogue; dimensions in mm. For a quotation, send the order code and quantity.
Scroll the table sideways ↔
| Order code | d1 h10 | l1 | l2 | d2 h6 | Z |
|---|---|---|---|---|---|
| MRS-0604-AC | 6 | 57 | 14 | 6 | 4 |
| MRS-0804-AC | 8 | 63 | 19 | 8 | 4 |
| MRS-1004-AC | 10 | 72 | 22 | 10 | 4 |
| MRS-1204-AC | 12 | 83 | 26 | 12 | 4 |
| MRS-1404-AC | 14 | 83 | 26 | 14 | 4 |
| MRS-1604-AC | 16 | 92 | 32 | 16 | 4 |
| MRS-1804-AC | 18 | 92 | 32 | 18 | 4 |
| MRS-2004-AC | 20 | 104 | 38 | 20 | 4 |
Cutting data, materials and coating
Suitable workpiece materials
- PISO P · Steel
- MISO M · Stainless
- KISO K · Cast iron
Workpiece hardness: <56 HRC
Coating
AlCrN (wear resistance)
Recommended cutting data ranges
| ISO group | Vc (m/min) | fz (mm/tooth) |
|---|---|---|
| P Steel | 65–230 | 0.006–0.36 |
| M Stainless | 60–170 | 0.006–0.36 |
| K Cast iron | 70–230 | 0.006–0.36 |
Values are starting recommendations; adjust them to machine rigidity, clamping, tool length and coolant.
Frequently asked questions
Which materials is MRS Series (Z4) suitable for?
MRS Series (Z4) is used in ISO material groups P/M/K: Steel, Stainless, Cast iron. Workpiece hardness: <56 HRC.
Which diameters and flute counts does MRS Series (Z4) come in?
MRS Series (Z4) is available in Ø6 - Ø20 with Z4 flutes. Other sizes can be made to drawing.
Which coating does MRS Series (Z4) have?
MRS Series (Z4) coating: AlCrN (wear resistance).
What are the recommended cutting speed and feed for MRS Series (Z4)?
Geppetto Product Catalogue 2026 (p. 137–138): ISO P: Vc 65–230 m/min, fz 0.006–0.36 mm/tooth; ISO M: Vc 60–170 m/min, fz 0.006–0.36 mm/tooth; ISO K: Vc 70–230 m/min, fz 0.006–0.36 mm/tooth. These are starting values; use the calculator to get spindle speed and feed for your diameter.
Can MRS Series (Z4) be reground?
Yes. Geppetto offers CNC regrinding, Drag Finish edge preparation and PVD recoating for carbide end mills, drills and reamers.
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