UNION TOOL Carbide Radius End Mills（Type：Long-Neck Radius）

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HRRS, HM Coated 4-Flute Short Shank Radius

UNION TOOL

[Features]
· Unique corner rounding creates larger cutting depth and pick feed than with a ball
· The seamless corner radius shape reduces cutting resistance and chattering
· High hardness materials up to 65 HRC can also be machined

Starting from^∗ ：	76.10 €
Min. Shipping Days ：	6 Days

*Unit price with basic configuration

HRRS, HM Coated 4-Flute Radius

UNION TOOL

[Features]
· Higher speed and higher precision machining enabled by shortening the total length and reducing the protruding part of the tool
· The optimized corner radius size enables processing with larger feed than conventional
· Seamless Corner Radius Shape
· High hardness materials up to 65 HRC can also be machined

Starting from^∗ ：	76.38 €
Min. Shipping Days ：	6 Days

*Unit price with basic configuration

Promotional pricing ends 31/12/2024

HLRS 4-Flute Long-Neck Radius

UNION TOOL

[Features]
· Long neck radius shape that exhibits power in high-performance and high-quality machining
· Rigidity-oriented blade shape provides long life even when machining high hardness materials
· Capable of stable machining for both dry and wet type
· New HARDMAX coating adopted to improve oxidation resistance.

Starting from^∗ ：	55.58 €
	Special price
Min. Shipping Days ：	Same day

*Unit price with basic configuration

Promotional pricing ends 31/12/2024

HLRS2000 HM Coated 2 Flute Long-Neck Radius

UNION TOOL

[Features]
· Long neck radius shape that exhibits power in high-performance and high-quality machining
· Capable of cutting everything from raw materials to high-hardness materials
· Capable of stable, long-life machining for both dry and wet type

Volume Discount

Starting from^∗ ：	43.45 €
	Special price
Min. Shipping Days ：	Same day

*Unit price with basic configuration

Promotional pricing ends 31/12/2024

HLRS2000E High Accuracy Type, High R Precision Long-Neck Radius

UNION TOOL

Starting from^∗ ：	60.34 €
	Special price
Min. Shipping Days ：	Same day

*Unit price with basic configuration

Promotional pricing ends 31/12/2024

CRRS UT Coated 4-Flute Radius

UNION TOOL

[Features]
· Suitable for everything from raw materials to 55 HRC, the UTCOAT provides a long life
· Variable split, high torsion and positive rake angle design enables stable machining
· A blade design that reduces the cutting resistance in helical and inclined use, etc.

Volume Discount

Starting from^∗ ：	85.32 €
	Special price
Min. Shipping Days ：	Same day

*Unit price with basic configuration

CPRS25NSP Two-Flute Long-Neck Radius for Processing Aluminum / Resin, 25° Torsion

UNION TOOL

[Features]
· For Machining Aluminum/Resin
· Non-coated, R0.1 corner radius, long-neck radius
· Subtle corner rounding suppresses lasting bottom cutter marks

Starting from^∗ ：	45.16 €
Min. Shipping Days ：	9 Days

*Unit price with basic configuration

CPRS30N Two-Flute Long-Neck Radius for Processing Aluminum / Resin, 30° Torsion

UNION TOOL

[Features]
· For Machining Aluminum/Resin
· Non-Coated Long-Neck Radius
· Surface roughness was emphasized in the design of this tool

Starting from^∗ ：	54.21 €
Min. Shipping Days ：	9 Days

*Unit price with basic configuration

CRS40HSP High Efficiency 3-Flute Long Neck Radius 40° Twist

UNION TOOL

[Features]
· High Efficiency 3-Flute Long Neck Radius (Short Blade)
· 40° Torsion
· Supports materials from SUS to pre-hardened and hardened steel (60 HRC)

Starting from^∗ ：	70.40 €
Min. Shipping Days ：	9 Days

*Unit price with basic configuration

CRS20HSP High Efficiency 4-Flute Long Neck Radius 20° Twist

UNION TOOL

[Features]
· High-rigidity 4-flute radius 8 (for high-hardness materials). 20° torsion.

Starting from^∗ ：	48.20 €
Min. Shipping Days ：	9 Days

*Unit price with basic configuration

HRRS 6-Flute Long Neck Radius

UNION TOOL

[Features]
· A long neck radius end mill; ideal for machining high hardness materials.
· 6-flute type; designed with an emphasis on rigidity.

Starting from^∗ ：	116.34 €
Min. Shipping Days ：	6 Days

*Unit price with basic configuration

DCLRS Diamond Coating 4-Flute Long Neck Radius

UNION TOOL

[Features]
· A 4-flute long neck radius end mill with diamond coating. Ideal for graphite electrode machining.
· The unique diamond coating is ideal for graphite machining and provides excellent abrasion resistance.
· Features a coating with excellent adhesive properties and an optimized blade shape, helping deliver a long service life.

Starting from^∗ ：	132.19 €
Min. Shipping Days ：	7 Days

*Unit price with basic configuration


Brand
Product Series
Starting from^∗
Min. Shipping Days ：
Blade diameter (D)(φ)
R Size(mm)
work material
Blade length (ℓ)(mm)
Number of flutes(sheet)
Type
Overall Length (L)(mm)
Shank diameter (d)(mm)
Underneck length (ℓ1)(mm)
Machining Application
Coating
Torsion Angle (θ)
R Precision(μm)

			Promotional pricing ends 31/12/2024	Promotional pricing ends 31/12/2024	Promotional pricing ends 31/12/2024	Promotional pricing ends 31/12/2024
Brand	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL	UNION TOOL
Product Series	HRRS, HM Coated 4-Flute Short Shank Radius	HRRS, HM Coated 4-Flute Radius	HLRS 4-Flute Long-Neck Radius	HLRS2000 HM Coated 2 Flute Long-Neck Radius	HLRS2000E High Accuracy Type, High R Precision Long-Neck Radius	CRRS UT Coated 4-Flute Radius	CPRS25NSP Two-Flute Long-Neck Radius for Processing Aluminum / Resin, 25° Torsion	CPRS30N Two-Flute Long-Neck Radius for Processing Aluminum / Resin, 30° Torsion	CRS40HSP High Efficiency 3-Flute Long Neck Radius 40° Twist	CRS20HSP High Efficiency 4-Flute Long Neck Radius 20° Twist	HRRS 6-Flute Long Neck Radius	DCLRS Diamond Coating 4-Flute Long Neck Radius
Starting from^∗	76.10 € *Unit price with basic configuration	76.38 € *Unit price with basic configuration	55.58 € Special price *Unit price with basic configuration Promotional pricing ends 31/12/2024	43.45 € Special price *Unit price with basic configuration Promotional pricing ends 31/12/2024 Volume Discount	60.34 € Special price *Unit price with basic configuration Promotional pricing ends 31/12/2024	85.32 € Special price *Unit price with basic configuration Promotional pricing ends 31/12/2024 Volume Discount	45.16 € *Unit price with basic configuration	54.21 € *Unit price with basic configuration	70.40 € *Unit price with basic configuration	48.20 € *Unit price with basic configuration	116.34 € *Unit price with basic configuration	132.19 € *Unit price with basic configuration
Min. Shipping Days ：	6 Days	6 Days	Same day	Same day	Same day	Same day	9 Days	9 Days	9 Days	9 Days	6 Days	7 Days
Blade diameter (D)(φ)	2 ～ 12	2 ～ 12	0.8 ～ 6	0.4 ～ 6	0.2 ～ 6	2 ～ 12	2 ～ 12	4 ～ 10	3 ～ 12	2　～ 12	-	-
R Size(mm)	0.3 ～ 4	0.3 ～ 4	0.05 ～ 1	0.05 ～ 1	0.05 ～ 1	0.3 ～ 2	0.1	0.3 ～ 0.8	0.1 ～ 0.5	0.2 ～ 1.2	-	-
work material	Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[◎] / High Hardness Steel: to HRC65[○] / Cast Iron[○]	Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[◎] / High Hardness Steel: to HRC65[○] / Cast Iron[○]	General Steel[○] / Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[◎] / High Hardness Steel: to HRC65[○] / Cast Iron[○] / Copper[○]	General Steel[○] / Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[◎] / High Hardness Steel: to HRC65[○] / Stainless Steel[○] / Cast Iron[○] / Titanium[○] / Copper[◎]	General Steel[○] / Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[◎] / High Hardness Steel: to HRC65[○] / Stainless Steel[○] / Cast Iron[○] / Copper[◎]	General Steel[◎] / Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / Cast Iron[○] / Aluminum[○] / Titanium[◎] / Copper[◎]	High Hardness Steel: to HRC65[○] / Aluminum[◎] / Resin[◎]	Aluminum[◎] / Copper[○] / Resin[◎]	General Steel[◎] / Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[○] / High Hardness Steel: to HRC60[○] / Stainless Steel[◎] / Cast Iron[◎] / Graphite[○] / Resin[○]	General Steel[○] / Quenched and tempered steel[○] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[◎] / Cast Iron[◎]	General Steel[○] / Quenched and tempered steel[◎] / High Hardness Steel: to HRC55[◎] / High Hardness Steel: to HRC60[○] / Cast Iron[○] / Titanium[○] / Copper[○]	Aluminum[○] / Copper[○] / Graphite[◎] / Resin[○]
Blade length (ℓ)(mm)	2 ～ 12	2 ～ 12	0.48 ～ 4.8	0.4 ～ 6	0.2 ～ 6	2 ～ 12	3 ～ 16	5 ～ 12	4 ～ 15	2.5 ～ 15	6 ～ 12	2 ～ 12
Number of flutes(sheet)	4	4	4	2	2	4	2	2	3	4	6	4
Type	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius	Long-Neck Radius
Overall Length (L)(mm)	45 ～ 75	70 ～ 120	50 ～ 120	50 ～ 120	50 ～ 100	60 ～ 120	38 ～ 90	50 ～ 80	38 ～ 120	50 ～ 75	60 ～ 100	50 ～ 120
Shank diameter (d)(mm)	3 ～ 12	3 ～ 12	4 ～ 6	4 ～ 6	4 ～ 6	4 ～ 12	3 ～ 12	6 ～ 10	3 ～ 12	6 ～ 12	6 ～ 12	4 ～ 6
Underneck length (ℓ1)(mm)	6 ～ 36	6 ～ 36	2 ～ 48	1 ～ 60	0.5 ～ 30	6 ～ 36	6 ～ 35	10 ～ 36	7 ～ 54	5 ～ 30	-	-
Machining Application	Plane / Side / Curved surface	Plane / Side / Curved surface	Plane / Side / Curved surface	Plane / Side / Curved surface / Groove / Plunging (Z feed)	Plane / Side / Curved surface / Groove / Plunging (Z feed)	Plane / Side / Curved surface	Plane / Side / Groove	Plane / Side / Groove	Plane / Side / Groove	Plane / Side / Groove	-	-
Coating	-	For High Hardness (Silicon Group)	For High Hardness (Silicon Group)	For High Hardness (Silicon Group)	For High Hardness (Silicon Group)	-	Non-Coated	Non-Coated	For High Hardness (Silicon Group)	For High Hardness (Silicon Group)	For High Hardness (Silicon Group)	Dia Coat
Torsion Angle (θ)	High Helix (45˚ to 60˚)	High Helix (45˚ to 60˚)	Standard Helix (30˚ to 40˚)	Standard Helix (30˚ to 40˚)	Standard Helix (30˚ to 40˚)	-	Weak torsion (15˚ to 25˚)	Standard Helix (30˚ to 40˚)	Standard Helix (30˚ to 40˚)	Weak torsion (15˚ to 25˚)	High Helix (45˚ to 60˚)	Standard Helix (30˚ to 40˚)
R Precision(μm)	-	-	-	-	-	-	-	-	-	-	±10 ～ ±15	±10

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Blade diameter (D)(φ)
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　

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25
Drawing

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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

0.76

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

3.05

3.2

3.5

4

R4

5

R5

6

R6

6.35

6.5

8
Drawing

Clear

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

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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　

6.75

7

7.5

8

8.25

8.4

9

10

10　

10.5

11

12

12　

12.5

13

13.5

14

15

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

64

75

80

100
Drawing

Clear

Number of flutes(sheet)
2

3

4

5

6

8
Drawing

Clear

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

Overall Length (L)(mm)
32

34

35

38

39

40

45

48

49

50

51

52

53

55

57

58

60

62

63

64

65

68

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75

80

83

85

86

88.90

90

92

95

100

104

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121

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145

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160

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230
Drawing

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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

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

66

70

72

75

80

80.4

81.4

82

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

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Torsion Angle (θ)
- No torsion
- Weak torsion (15˚ to 25˚)
- Standard Helix (30˚ to 40˚)
- High Helix (45˚ to 60˚)
- Other
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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～-0.01

0～+0.04

±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

±15

±20
Drawing

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Categories related to Carbide Radius End Mills

- Radius End Mills (Carbide)
- Long Neck Radius End Mills (Carbide)

UNION TOOL Carbide Radius End Mills（Type：Long-Neck Radius）

Search by sub-category

HRRS, HM Coated 4-Flute Short Shank Radius

HRRS, HM Coated 4-Flute Radius

HLRS 4-Flute Long-Neck Radius

HLRS2000 HM Coated 2 Flute Long-Neck Radius

HLRS2000E High Accuracy Type, High R Precision Long-Neck Radius

CRRS UT Coated 4-Flute Radius

CPRS25NSP Two-Flute Long-Neck Radius for Processing Aluminum / Resin, 25° Torsion

CPRS30N Two-Flute Long-Neck Radius for Processing Aluminum / Resin, 30° Torsion

CRS40HSP High Efficiency 3-Flute Long Neck Radius 40° Twist

CRS20HSP High Efficiency 4-Flute Long Neck Radius 20° Twist

HRRS 6-Flute Long Neck Radius

DCLRS Diamond Coating 4-Flute Long Neck Radius

Filter by:

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Blade diameter (D)(φ)

R Size(mm)

work material

Blade length (ℓ)(mm)

Number of flutes(sheet)

Type

Overall Length (L)(mm)

Shank diameter (d)(mm)

Underneck length (ℓ1)(mm)

Machining Application

Coating

Torsion Angle (θ)

R Precision(μm)

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