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Carbide Radius End Mills（R Precision：0～-20）

An online store for carbide radius end mills. In MISUMI's e-catalog, by setting conditions for specifications/standards such as blade diameter, radius size, compatible work materials, blade length, machining applications such as flat surface / side surface /groove, and coating presence, you can easily find the desired tool. A varied lineup including multi-blades for high hardness steel machining, products for aluminum machining with DLC coating, blade length difference, etc. is available.
[What is a carbide radius end mill?]
An end mill made of cemented carbide that mainly cuts with a round cutting edge on the bottom flute rim. It is mostly used for flat/curved surface cutting and also for applications similar to ball end mills, but the applicable curved surface shape is limited. In addition, since the cutting edge is rounded, the cutting edge tip does not get damaged, and can be used for rough cutting to perform high efficiency machining.

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Brand	(0) (0) 7 LEADERS (4) ATOM (0) DIJET (0) GUHRING (0) KYOWA SEIKO (0) NACHI(FUJIKOSHI) (0) NS TOOL (0) OKAZAKI SEIKO (0) OSG (0) Poulten&Graf (0) SANDVIK (0) TAIYO-TOOL (0) UNION TOOL (0) VAN HOORN (0) WATERMILLS (0)
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: 30; 45; 60

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Carbide 4-Flute Variable Split Corner Radius Short End Mill 30° B256X

7 LEADERS

[Features]
· Also use the 4-flute short radius end mill to prevent tip chipping.
· Nanoparticle multilayer coating.
· Excellent lubricity and abrasion resistance.
· Exhibits its strength in general cutting processes.
· It supports high-speed side cutting.

Blade diameter (D)(φ)	R Size(mm)	Blade length (ℓ)(mm)	Number of flutes(sheet)	Overall Length (L)(mm)	work material	Shank diameter (d)(mm)	Underneck length (ℓ1)(mm)	Machining Application	Coating	Type	Torsion Angle (θ)	R Precision(μm)
1 ～ 20	0.1 ～ 4	3 ～ 38	4	50 ～ 100	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Titanium[○] / Copper[○] / Resin[○]	4 ～ 20	-	Plane / Side / Curved surface	-	radius	Standard torsion (30-40°)	0～-20

From: ₹ 2,426.95
Days to Ship: 5 Day(s) or more

5 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

Carbide 4-Flute Variable Split Corner Radius Medium End Mill 30° B258X

7 LEADERS

[Features]
· Also use the 4-flute medium shank radius end mill to prevent tip chipping.
· Enables radius cutting deep into the work materials.
· Nanoparticle multilayer coating.
· Excellent lubricity and abrasion resistance.
· Exhibits its strength in general cutting processes.
· It supports high-speed side cutting.

Blade diameter (D)(φ)	R Size(mm)	Blade length (ℓ)(mm)	Number of flutes(sheet)	Overall Length (L)(mm)	work material	Shank diameter (d)(mm)	Underneck length (ℓ1)(mm)	Machining Application	Coating	Type	Torsion Angle (θ)	R Precision(μm)
3 ～ 20	0.1 ～ 4	10 ～ 55	4	50 ～ 160	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Titanium[○] / Copper[○] / Graphite[○] / Resin[○]	3 ～ 20	-	Plane / Side / Curved surface	-	radius	Standard torsion (30-40°)	0～-20

From: ₹ 2,426.95
Days to Ship: 7 Day(s) or more

7 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

Carbide 2-Piece Flute Corner Radius Short End Mill 30° B255X

7 LEADERS

[Features]
· Also use the 2-flute short radius end mill to prevent tip chipping.
· Nanoparticle Multilayer Coating
· Excellent lubricity and abrasion resistance.
· Exhibits its strength in general cutting processes.

Blade diameter (D)(φ)	R Size(mm)	Blade length (ℓ)(mm)	Number of flutes(sheet)	Overall Length (L)(mm)	work material	Shank diameter (d)(mm)	Underneck length (ℓ1)(mm)	Machining Application	Coating	Type	Torsion Angle (θ)	R Precision(μm)
1 ～ 20	0.1 ～ 4	3 ～ 38	2	50 ～ 100	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Aluminum[○] / Titanium[○] / Copper[○] / Resin[○]	4 ～ 20	-	Plane / Side / Curved surface	-	radius	Standard torsion (30-40°)	0～-20

From: ₹ 2,426.95
Days to Ship: 7 Day(s) or more

7 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

Carbide 2-Flute Corner Radius Medium End Mill 30° B257X

7 LEADERS

[Features]
· Also use the 2-flute medium shank radius end mill to prevent tip chipping.
· Enables radius cutting deep into the work materials.
· Nanoparticle multilayer coating.
· Excellent lubricity and abrasion resistance.
· Exhibits its strength in general cutting processes.

Blade diameter (D)(φ)	R Size(mm)	Blade length (ℓ)(mm)	Number of flutes(sheet)	Overall Length (L)(mm)	work material	Shank diameter (d)(mm)	Underneck length (ℓ1)(mm)	Machining Application	Coating	Type	Torsion Angle (θ)	R Precision(μm)
3 ～ 20	0.1 ～ 4	10 ～ 55	2	50 ～ 160	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Aluminum[○] / Titanium[○] / Copper[○] / Graphite[○] / Resin[○]	3 ～ 20	-	Plane / Side / Curved surface	-	radius	Standard torsion (30-40°)	0～-20

From: ₹ 2,426.95
Days to Ship: 7 Day(s) or more

7 Day(s) or more


Brand
Product Series
From
Days to Ship
Blade diameter (D)(φ)
R Size(mm)
Blade length (ℓ)(mm)
Number of flutes(sheet)
Overall Length (L)(mm)
work material
Shank diameter (d)(mm)
Underneck length (ℓ1)(mm)
Machining Application
Coating
Type
Torsion Angle (θ)
R Precision(μm)

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	7 LEADERS	7 LEADERS	7 LEADERS	7 LEADERS
Product Series	Carbide 4-Flute Variable Split Corner Radius Short End Mill 30° B256X	Carbide 4-Flute Variable Split Corner Radius Medium End Mill 30° B258X	Carbide 2-Piece Flute Corner Radius Short End Mill 30° B255X	Carbide 2-Flute Corner Radius Medium End Mill 30° B257X
From	₹ 2,426.95	₹ 2,426.95	₹ 2,426.95	₹ 2,426.95
Days to Ship	5 Day(s) or more	7 Day(s) or more	7 Day(s) or more	7 Day(s) or more
Blade diameter (D)(φ)	1 ～ 20	3 ～ 20	1 ～ 20	3 ～ 20
R Size(mm)	0.1 ～ 4	0.1 ～ 4	0.1 ～ 4	0.1 ～ 4
Blade length (ℓ)(mm)	3 ～ 38	10 ～ 55	3 ～ 38	10 ～ 55
Number of flutes(sheet)	4	4	2	2
Overall Length (L)(mm)	50 ～ 100	50 ～ 160	50 ～ 100	50 ～ 160
work material	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Titanium[○] / Copper[○] / Resin[○]	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Titanium[○] / Copper[○] / Graphite[○] / Resin[○]	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Aluminum[○] / Titanium[○] / Copper[○] / Resin[○]	general steel[◎] / Quenched and tempered steel[○] / High Hardness Steel-HRC55[◎] / Stainless Steel[○] / Cast Iron[○] / Aluminum[○] / Titanium[○] / Copper[○] / Graphite[○] / Resin[○]
Shank diameter (d)(mm)	4 ～ 20	3 ～ 20	4 ～ 20	3 ～ 20
Underneck length (ℓ1)(mm)	-	-	-	-
Machining Application	Plane / Side / Curved surface	Plane / Side / Curved surface	Plane / Side / Curved surface	Plane / Side / Curved surface
Coating	-	-	-	-
Type	radius	radius	radius	radius
Torsion Angle (θ)	Standard torsion (30-40°)	Standard torsion (30-40°)	Standard torsion (30-40°)	Standard torsion (30-40°)
R Precision(μm)	0～-20	0～-20	0～-20	0～-20

Configure

Specification/Dimensions

Blade diameter (D)(φ)
0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.2

1.4

1.5

1.6

1.8

2

2　

2.5

2.8

3

3　

3.5

4

4　

4.5

5

5　

5.5

6

7

8

8　

9

10

10　

11

12

12　

13

14

16

17

18

20

22

25
Drawing

Clear

R Size(mm)
R0

0.02

0.03

0.05

0.1

0.15

0.2

0.25

0.3

0.4

0.5

0.6

0.7

0.75

0.8

0.813

0.9

1

R1

1.1

1.2

1.219

1.3

1.4

1.5

R1.5

1.6

1.625

1.7

1.8

1.9

2

R2

2.031

2.1

2.2

2.3

2.4

2.438

2.465

2.5

R2.5

2.6

2.607

2.7

2.8

2.9

3

R3

3.2

3.5

4

R4

5

R5

R6

6.5
Drawing

Clear

Blade length (ℓ)(mm)
0.08

0.13

0.15

0.16

0.2

0.24

0.25

0.28

0.3

0.32

0.4

0.48

0.5

0.55

0.56

0.6

0.64

0.65

0.7

0.72

0.75

0.8

0.9

0.96

1

1.2

1.44

1.5

1.6

1.8

2

2.1

2.2

2.25

2.3

2.4

2.5

2.7

3

3　

3.2

3.5

3.7

4

4　

4.5

4.8

5

5　

5.25

5.5

5.6

6

6　

7

7.5

8

8.25

8.4

9

10

10　

10.5

11

12

12　

13

14

15

15　

16

17

18

19

20

21

22

24

25

26

27

28

30

32

33

34

35

36

37.5

38

40

45

48

50

55

56

60

64

80

100
Drawing

Clear

Number of flutes(sheet)
2

3

4

5

6

8
Drawing

Clear

Overall Length (L)(mm)
34

35

38

39

40

45

48

49

50

51

52

53

55

57

60

62

63

64

65

68

70

72

74

75

80

83

85

86

90

92

95

100

104

105

110

115

120

121

125

130

135

140

145

150

160

170

175

180

185

190

200

220
Drawing

Clear

work material
- general steel
- Quenched and tempered steel
- High Hardness Steel-HRC55
- High Hardness Steel-HRC60
- High Hardness Steel-HRC65
- Stainless Steel
- Cast Iron
- Aluminum
- Titanium
- Copper
- Graphite
- Resin
Details

Clear

Shank diameter (d)(mm)
3

4

5

5.8

6

7.8

8

9.8

10

11

12

13

14

15

16

17

18

20

25
Drawing

Clear

Underneck length (ℓ1)(mm)
0.20

0.5

1

1.5

1.60

1.8

2

2.4

2.5

3

3.5

3.8

4

4.5

5

6

7

7.5

8

9

10

11

12

12.35

12.5

13

14

14.35

15

16

16.65

18

19

20

21

22

24

25

26

27

28

29

30

32

32.1

32.6

33.6

34.6

35

35.6

36

38

39

40

41.2

42

42.2

43.2

44

44.2

45

45.2

46.5

48

50

54

55

56

60

60.3

60.8

61.3

62.3

63.3

64

64.3

65

70

72

75

80

80.4

81.4

82.4

84

85

90

92.9

95

100

102

105

108

110

120

120.6

121.6

122.6

125

140

160

160.8
Drawing

Clear

Machining Application
- Plane
- Side
- Curved surface
- Groove
- Plunging (Z feed)
- Inclined Cuts
Images

Clear

Coating
- For High Hardness (Silicon Group)
- TiAlN
- For General Steels (AlCrN, etc.)
- TiCN
- DLC
- Dia Coat
- Non-Coated
- AlTiN
- Other
Details

Clear

Type
- radius
- High-Feed Radius
- Long-Neck Radius
- Tapered neck radius
Clear

Torsion Angle (θ)
- No torsion
- Weak torsion (15 to 25˚)
- Standard torsion (30-40°)
- Powerful Torsion (45°-60°)
- Other
- 45°
Clear

R Precision(μm)
-0.014～-0.028

-0.005 to 0.005

0～-20

0～-0.05

0～-0.030

0～-0.015

0～-0.01

±0.005

0.005 to -0.005

0.005～-0.005

±0.01

0.01 to -0.01

0.01～-0.01

±0.015

0.015～-0.015

±0.02

0.02～-0.02

0.025～-0.025

±0.03

±0.05

10
Drawing

Clear