KY TOOLS / Hard Series

Hard Series — Carbide End Mills

Carbide end mills for hardened and tool steel applications, including HRC50–65 machining. Compare 2-, 4- and 6-flute profiles and roughing options.

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6 / Tool Profiles

4 Flutes · Square End Mills

Ø1–20 mm · 30° · Shank diameter h5
Hard Series — 4 Flutes · Square End Mills
  • Good wear resistance by Si-based PVD coating.
  • High-precision cutting-edge tolerance.
  • Reinforced edge design helps prevent chipping.
  • Fine-grain WC (0.3 μm) with high TRS helps minimize breakage.

Material Applications

HRC50–65

Pre-hardened steel · Hardened steel · Alloy steel · Tool steel · Titanium alloys · Copper · Carbon steel · Graphite

Specifications
WC μm
0.3
Co %
9
HRA
93.8
TRS MPa
3800
KIC MPa·√m
9.2
View Drawing4 Flutes · Square End Mills — D, FL, OAL, R

Standard Dimensions · mm

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Hard Series — 4 Flutes · Square End Mills
DCutting diameterFLFlute lengthOALOverall lengthdShank diameterRequest a Quote
13504Request a Quote
25504Request a Quote
38504Request a Quote
410504Request a Quote
420754Request a Quote
4251004Request a Quote
513506Request a Quote
615506Request a Quote
625756Request a Quote
6301006Request a Quote
6301506Request a Quote
820608Request a Quote
825758Request a Quote
8351008Request a Quote
8401508Request a Quote
10257510Request a Quote
104010010Request a Quote
105015010Request a Quote
12307512Request a Quote
124510012Request a Quote
126015012Request a Quote
14358014Request a Quote
144510014Request a Quote
146015014Request a Quote
164510016Request a Quote
166015016Request a Quote
184510018Request a Quote
186015018Request a Quote
204510020Request a Quote
206015020Request a Quote

2 Flutes · Square End Mills

Ø1–20 mm · 30° · Shank diameter h5
Hard Series — 2 Flutes · Square End Mills
  • Good wear resistance by Si-based PVD coating.
  • High-precision cutting-edge tolerance.
  • Reinforced edge design helps prevent chipping.
  • Fine-grain WC (0.3 μm) with high TRS helps minimize breakage.

Material Applications

HRC50–65

Pre-hardened steel · Hardened steel · Alloy steel · Tool steel · Titanium alloys · Copper · Carbon steel · Graphite

Specifications
WC μm
0.3
Co %
9
HRA
93.8
TRS MPa
3800
KIC MPa·√m
9.2
View Drawing2 Flutes · Square End Mills — D, FL, OAL, R

Standard Dimensions · mm

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Hard Series — 2 Flutes · Square End Mills
DCutting diameterFLFlute lengthOALOverall lengthdShank diameterRequest a Quote
13504Request a Quote
25504Request a Quote
38504Request a Quote
410504Request a Quote
420754Request a Quote
4251004Request a Quote
513506Request a Quote
615506Request a Quote
625756Request a Quote
6301006Request a Quote
6301506Request a Quote
820608Request a Quote
825758Request a Quote
8351008Request a Quote
8401508Request a Quote
10257510Request a Quote
104010010Request a Quote
105015010Request a Quote
12307512Request a Quote
124510012Request a Quote
126015012Request a Quote
14358014Request a Quote
144510014Request a Quote
146015014Request a Quote
164510016Request a Quote
166015016Request a Quote
184510018Request a Quote
186015018Request a Quote
204510020Request a Quote
206015020Request a Quote

6 Flutes · Square End Mills

Ø1–20 mm · 45°
Hard Series — 6 Flutes · Square End Mills
  • Good wear resistance by Si-based PVD coating.
  • Precise run-out and tolerance for finish machining.
  • Reinforced edge design helps prevent chipping.
  • 45° helix design for high-speed, high-feed machining.

Material Applications

Optimal: Pre-hardened steel · Hardened steel up to HRC55 · HRC55–65 · Alloy tool steel

Secondary: Carbon steel

View Drawing6 Flutes · Square End Mills — D, FL, OAL, R

Standard Dimensions · mm

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Hard Series — 6 Flutes · Square End Mills
DCutting diameterFLFlute lengthOALOverall lengthdShank diameterRequest a Quote
13504Request a Quote
25504Request a Quote
38504Request a Quote
410504Request a Quote
420754Request a Quote
4251004Request a Quote
513506Request a Quote
615506Request a Quote
625756Request a Quote
6301006Request a Quote
6301506Request a Quote
820608Request a Quote
825758Request a Quote
8351008Request a Quote
8401508Request a Quote
10257510Request a Quote
104010010Request a Quote
105015010Request a Quote
12307512Request a Quote
124510012Request a Quote
126015012Request a Quote
14358014Request a Quote
144510014Request a Quote
146015014Request a Quote
164510016Request a Quote
166015016Request a Quote
184510018Request a Quote
186015018Request a Quote
204510020Request a Quote
206015020Request a Quote

2 Flutes · Ball Nose End Mills

Ø1–20 mm · 30° · Shank diameter h5
Hard Series — 2 Flutes · Ball Nose End Mills
  • Good wear resistance by Si-based PVD coating.
  • High-precision cutting-edge tolerance.
  • Reinforced edge design helps prevent chipping.
  • Fine-grain WC (0.3 μm) with high TRS helps minimize breakage.

Material Applications

HRC50–65

Pre-hardened steel · Hardened steel · Alloy steel · Tool steel · Titanium alloys · Copper · Carbon steel · Graphite

Specifications
WC μm
0.3
Co %
9
HRA
93.8
TRS MPa
3800
KIC MPa·√m
9.2

R 0.5–2.5 mm: ±0.005 mm

R 3–10 mm: ±0.01 mm

View Drawing2 Flutes · Ball Nose End Mills — D, FL, OAL, R

Standard Dimensions · mm

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Hard Series — 2 Flutes · Ball Nose End Mills
DCutting diameterRRFLFlute lengthOALOverall lengthdShank diameterRequest a Quote
10.53504Request a Quote
215504Request a Quote
31.58504Request a Quote
4210504Request a Quote
4220754Request a Quote
42251004Request a Quote
52.513506Request a Quote
6315506Request a Quote
6325756Request a Quote
63301006Request a Quote
63301506Request a Quote
8420608Request a Quote
8425758Request a Quote
84351008Request a Quote
84401508Request a Quote
105257510Request a Quote
1054010010Request a Quote
1055015010Request a Quote
126307512Request a Quote
1264510012Request a Quote
1266015012Request a Quote
147358014Request a Quote
1474510014Request a Quote
1476015014Request a Quote
1684510016Request a Quote
1686015016Request a Quote
1894510018Request a Quote
1896015018Request a Quote
20104510020Request a Quote
20106015020Request a Quote

4 Flutes · Bull Nose End Mills

Ø1–20 mm · 30° · Shank diameter h5
Hard Series — 4 Flutes · Bull Nose End Mills
  • Good wear resistance by Si-based PVD coating.
  • High-precision cutting-edge tolerance.
  • Reinforced edge design helps prevent chipping.
  • Fine-grain WC (0.3 μm) with high TRS helps minimize breakage.

Material Applications

HRC50–65

Pre-hardened steel · Hardened steel · Alloy steel · Tool steel · Titanium alloys · Copper · Carbon steel · Graphite

Specifications
WC μm
0.3
Co %
9
HRA
93.8
TRS MPa
3800
KIC MPa·√m
9.2

R 0.02–0.5 mm: ±0.005 mm

R 1–1.5 mm: ±0.01 mm

R 2–5 mm: ±0.015 mm

View Drawing4 Flutes · Bull Nose End Mills — D, FL, OAL, R

Standard Dimensions · mm

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Hard Series — 4 Flutes · Bull Nose End Mills
DCutting diameterRRFLFlute lengthOALOverall lengthdShank diameterRequest a Quote
10.23504Request a Quote
20.2 / 0.55504Request a Quote
30.2 / 0.58504Request a Quote
40.2 / 0.5 / 110504Request a Quote
40.2 / 0.5 / 120754Request a Quote
40.2 / 0.5 / 1251004Request a Quote
50.2 / 0.5 / 113506Request a Quote
60.2 / 0.5 / 115506Request a Quote
60.2 / 0.5 / 125756Request a Quote
60.2 / 0.5 / 1301006Request a Quote
60.2 / 0.5 / 1301506Request a Quote
80.2 / 0.5 / 1 / 220608Request a Quote
80.2 / 0.5 / 1 / 225758Request a Quote
80.2 / 0.5 / 1 / 2351008Request a Quote
80.2 / 0.5 / 1 / 2401508Request a Quote
100.5 / 1 / 2 / 3257510Request a Quote
100.5 / 1 / 2 / 34010010Request a Quote
100.5 / 1 / 2 / 35015010Request a Quote
120.5 / 1 / 2 / 3307512Request a Quote
120.5 / 1 / 2 / 34510012Request a Quote
120.5 / 1 / 2 / 36015012Request a Quote
140.5 / 1 / 2358014Request a Quote
140.5 / 1 / 24510014Request a Quote
140.5 / 1 / 26015014Request a Quote
160.5 / 1 / 24510016Request a Quote
160.5 / 1 / 26015016Request a Quote
180.5 / 1 / 24510018Request a Quote
180.5 / 1 / 26015018Request a Quote
200.5 / 1 / 24510020Request a Quote
200.5 / 1 / 26015020Request a Quote

3 / 4 / 5 Flutes · Roughing End Mills

Ø4–20 mm · 45° · Shank diameter h5
Hard Series — 3 / 4 / 5 Flutes · Roughing End Mills
  • Good wear resistance by Si-based PVD coating.
  • High-precision cutting-edge tolerance.
  • Reinforced edge design helps prevent chipping.
  • Fine-grain WC (0.3 μm) with high TRS helps minimize breakage.

Material Applications

HRC50–65

Pre-hardened steel · Hardened steel · Alloy steel · Tool steel · Titanium alloys · Copper · Carbon steel · Graphite

Specifications
WC μm
0.3
Co %
9
HRA
93.8
TRS MPa
3800
KIC MPa·√m
9.2

R 0.02–0.5 mm: ±0.005 mm

R 1–1.5 mm: ±0.01 mm

R 2–5 mm: ±0.015 mm

View Drawing3 / 4 / 5 Flutes · Roughing End Mills — D, FL, OAL, R

Standard Dimensions · mm

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Hard Series — 3 / 4 / 5 Flutes · Roughing End Mills
DCutting diameterRRFLFlute lengthL2Reach lengthOALOverall lengthdShank diameterZFlutesRequest a Quote
40.210—5063Request a Quote
60.210206064Request a Quote
60.513—6064Request a Quote
80.212257084Request a Quote
8119—7084Request a Quote
100.3153075104Request a Quote
10122—75104Request a Quote
120.3203580124Request a Quote
12126—80124Request a Quote
160.532—100165Request a Quote
161.532—100165Request a Quote
200.538—100205Request a Quote
20238—100205Request a Quote

Request a Quote — Hard Series

Send your work material and hardness, profile, cutting diameter, flute length, reach, coating, quantity and annual demand. Include radius and inspection requirements where applicable. Price, order quantity and delivery are confirmed for your specification.

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FROM OUR WORKSHOP

Watch us grind and inspect our tools

Two videos filmed in our workshop: CNC tool grinding and dimensional inspection.

CNC grinding: end mills, drills & special cutters

See how we use a CNC grinder to make carbide end mills, drills and special cutters.

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Measuring carbide end mills at 0.001 mm

Watch our ZOLLER inspection process for precision carbide end mills.

Watch on YouTube