(!)Due to Microsoft's end of support for Internet Explorer 11 on 15/06/2022, this site does not support the recommended environment.
Instead, please kindly use other browsers like Google Chrome, Microsoft Edge or Mozilla Firefox.

7 Million Products, 2,000 Brands.
50,000 Stock items for Same Day Ship Out.

All Categories

Search by Application

inCAD Library

Brands

Brand List

Webcode Seach | Series: #CODE

Keyword suggestions

Part number suggestions

Discontinued Products

Please be informed that our office is closed during the upcoming Labour Day Holiday in 2024. We would also like to inform you that there may be a potential delay in response/shipment from the supplier due to the Japan Golden Week holiday which falls from 29th April to 6th May 2024. Click here for details.
Please Note our New Address (effective April 1, 2024): 331 North Bridge Rd, #05-01 Odeon 331, Singapore 188720.

How can we improve?

Feedback

Name (Optional)

E-mail Address (Optional)

Tel (Optional)

Thank you for your time.
Your feedback is essential for our continuous improvement
Privacy Policy

Thank you for your cooperation.

Thank you for your time.
Your feedback is essential for our continuous improvement
Please use the inquiry form.

7 LEADERS Radius End Mills (Carbide)（work material：High Hardness Steel-HRC55）

4 items

: 30; 45; 60

Days to Ship	All 3 Day(s) or Less 4 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less 9 Day(s) or Less 10 Day(s) or Less 11 Day(s) or Less 12 Day(s) or Less

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.

Standard Price:	SGD 35.96-
Days to Ship:	4 Day(s) or more

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.

Standard Price:	SGD 35.96-
Days to Ship:	6 Day(s) or more

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.

Standard Price:	SGD 35.96-
Days to Ship:	6 Day(s) or more

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.

Standard Price:	SGD 35.96-
Days to Ship:	6 Day(s) or more


Brand
Product Series
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)


Brand	7 LEADERS	7 LEADERS	7 LEADERS	7 LEADERS
Product Series	Carbide 4-Flute Variable Split Corner Radius Short End Mill 30° B256X	Carbide 2-Flute Corner Radius Medium End Mill 30° B257X	Carbide 2-Piece Flute Corner Radius Short End Mill 30° B255X	Carbide 4-Flute Variable Split Corner Radius Medium End Mill 30° B258X
Days to Ship	4 Day(s) or more	6 Day(s) or more	6 Day(s) or more	6 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	2	2	4
Overall Length (L)(mm)	50 ～ 100	50 ～ 160	50 ～ 100	50 ～ 160
work material	High Hardness Steel-HRC55[◎]	High Hardness Steel-HRC55[◎]	High Hardness Steel-HRC55[◎]	High Hardness Steel-HRC55[◎]
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

0.2

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

2.5

2.8

3

3.5

4

4.5

5

5.5

6

7

8

9

10

11

12

13

14

16

17

18

20

22

25
Drawing

Clear

R Size(mm)
R0

0.05

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.75

0.76

0.8

0.9

1

R1

1.1

1.2

1.3

1.4

1.5

R1.5

1.6

1.7

1.8

1.9

2

R2

2.1

2.2

2.3

2.4

2.5

R2.5

2.6

2.7

2.8

2.9

3

R3

3.05

3.2

3.5

4

R4

5

R5

6

R6

6.35

8
Drawing

Clear

Blade length (ℓ)(mm)
0.16

0.24

0.25

0.28

0.3

0.32

0.4

0.5

0.6

0.64

0.7

0.75

0.8

0.9

1

1.2

1.5

1.6

1.8

2

2.1

2.25

2.3

2.4

2.5

2.7

3

3.2

3.5

3.7

4

4.5

5

5.25

5.5

5.6

6

6.75

7

7.5

8

8.25

8.4

9

10

10.5

11

12

12.5

13

13.5

14

15

16

16.5

17

17.5

18

19

19.5

20

21

22

24

25

25.5

26

27

28

30

32

33

34

35

36

37.5

38

40

42

45

48

50

55

56

60

75
Drawing

Clear

Number of flutes(sheet)
2

3

4

5

6

8
Drawing

Clear

Overall Length (L)(mm)
32

34

35

39

40

45

49

50

51

52

55

57

58

60

62

63

65

68

70

72

74

75

80

83

85

86

88.90

90

92

95

100

104

105

110

115

120

121

125

130

135

140

150

160

170

180

200

220

230
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

9.8

10

11

12

13

14

15

16

17

18

20

25
Drawing

Clear

Underneck length (ℓ1)(mm)
1

1.5

1.8

2

2.4

2.5

3

3.5

3.8

4

4.5

5

6

7.5

8

9

10

12

12.5

13

15

16

18

19

20

21

22

24

25

27

28

30

32

34

35

36

38

40

42

44

45

48

50

54

55

56

60

65

66

70

72

75

80

82

84

85

90

95

100

105

108

120

-
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)
-0.032～-0.059

-0.025～-0.047

-0.020～-0.038

-0.014～-0.028

-0.005 to 0.005

0～-20

0～-0.05

0～-0.030

0～-0.015

0～+0.04

±0.005

±0.01

±0.015

±0.02

0.02～-0.02

0.025～-0.025

±0.03

±0.05

10

±10

±20
Drawing

Clear

Narrow search by specifying Manufacturer

- MISUMI (39)
- Economy series (0)
- OSG (17)
- NACHI(FUJIKOSHI) (6)
- 7 LEADERS (4)
- KYOWA SEIKO (4)
- SANKO MFG (4)
- OKAZAKI SEIKO (3)
- GUHRING (2)
- UNION TOOL (2)
- NS TOOL (1)
- THE CUT (1)
- ATOM (0)
- WATERMILLS (0)
- DIJET (0)
- SANDVIK (0)
- TAIYO-TOOL (0)
Clear

All Categories

Categories

Search by Application

Brands

Message from MISUMI

My Favorites

Settings

How can we improve?

7 LEADERS Radius End Mills (Carbide)（work material：High Hardness Steel-HRC55）

Configure

Specification/Dimensions

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)

Narrow search by specifying Manufacturer

CAD

Related Categories to Radius End Mills (Carbide)

Payment Method more

About MISUMI

About this Website

Useful Tools

Customer Service

Social Media

MISUMI Contact 9:00 am – 6:00 pm (Mon – Fri), 9:00 am – 3 pm (Sat)