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Diamond & CBN Burrs（Classification：Internal Grindstone）

Diamond/carbon burs are rod-type abrasives used for grinding the inner surface of metals and nonferrous metals and removing burs. They are mainly used for the precision grinding of molds and other workpieces and finishing of welds. They are attached to precision grinders (micro grinders) to be used. Bar tips are available in various shapes, including cylinder shape, ball shape, bullet shape, flat shape and tapered shape, and it is important to choose a suitable type according to the application. Products with a hexagonal shaft can be used attached to an impact screwdriver. Carbon is second to diamond in hardness, and like diamond, it is used as a material for abrasive grains. Carbon is frequently used for stainless steel and other metal materials, and due to its excellent heat resistance, carbon is suitable for use under high temperatures.

6 items

: 30; 45; 60

Days to Ship	All Same day 7 Days or Less 8 Days or Less 9 Days or Less 10 Days or Less 11 Days or Less 12 Days or Less 13 Days or Less 14 Days or Less 15 Days or Less

Internally Mounted Grindstone Jig for Grinding Electrodeposition Type

DIACRYSTON

•Model: Single Item
•Shape: Cylindrical
•Classification: Internal Grindstone

Volume Discount
Days to Ship: 8 Days or more
Internal Grindstone with Shaft

MISUMI

Low chatter ensures high performance on hard materials

Volume Discount

Price Reduction
Days to Ship: 8 Days or more
Borazon Internal Bar

Trusco Nakayama

[Features]
· Shank diameters of 3 mm.
· Knoop hardness is about 4,700 (second hardest material following diamonds) so CBN can be used just as diamond for most workpieces; however, it generates large amounts of heat especially during grinding, so it is best suited for metals containing carbon.
[Applications]
· Applicable workpiece materials: Carbon steel, tool steel alloy, high-speed tool steel, bearing steel, case hardened steel, hardened steel, stainless steel.

Volume Discount
Days to Ship: 8 Days or more
Diamond Internal Bar

Trusco Nakayama

[Features]
· Shank diameters of 3 mm.
· Knoop hardness is about 7,000 (the hardest material on earth) so it can be used for most workpieces such as metals, marble, glass, etc. Most suited for workpieces with high hardness such as ceramic materials. However, since diamond does not withstand heat, it is not suitable for machining that involves production of large amounts of heat (HSS, etc.).
[Applications]
· Applicable workpiece materials: Carbide alloy, glass, ceramic, rubber, plastic, stone, concrete, ferrite and other nonferrous metals.

Volume Discount
Days to Ship: 8 Days or more
Internal Bar 5-Piece Set (Borazone)【5 Pieces Per Package】

Trusco Nakayama

[Features]
· Borazon (CBN) is an abrasive grain that has hardness second to diamond. Suitable for iron based materials (stainless steel, SC, SK, SCM, etc.) for which diamond is not suitable.
· Also suitable in cases where sufficient cooling is not possible, as its heat-resistant temperature is higher than that of diamond.
[Applications]
· Applicable workpiece materials: Carbon steel, tool steel alloy, high-speed tool steel, bearing steel, case hardened steel, hardened steel, stainless steel.

Volume Discount
Days to Ship: 8 Days or more
High End Black Bar #230

Trusco Nakayama

[Features]
· For rough processing, deburring, and ridge removing.
· Special high-hardness stainless steel shank realizes firm operability and suppleness.
· Capable of precision machining thanks to the shank, which bends less.
· Machining time is significantly shortened as work can be done with high loads.

Volume Discount
Days to Ship: 9 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	8 Days or more

Days to Ship:	9 Days or more


Brand
Product Series
Days to Ship
Classification
Model
Particle Size(#)
Shape
Material / Abrasive
Diamond Part Maximum Diameter(mm)
Diamond Length / Grindstone Length(mm)
Shaft Diameter(mm)

		Price Reduction
Brand	DIACRYSTON	MISUMI	Trusco Nakayama	Trusco Nakayama	Trusco Nakayama	Trusco Nakayama
Product Series	Internally Mounted Grindstone Jig for Grinding Electrodeposition Type	Internal Grindstone with Shaft	Borazon Internal Bar	Diamond Internal Bar	Internal Bar 5-Piece Set (Borazone)【5 Pieces Per Package】	High End Black Bar #230
Days to Ship	8 Days or more	8 Days or more	8 Days or more	8 Days or more	8 Days or more	9 Days or more
Classification	Internal Grindstone	Internal Grindstone	Internal Grindstone	Internal Grindstone	Internal Grindstone	Internal Grindstone
Model	Single Item	Single Item	Single Item	Diamond Disc Mandrel	Set Product	Single Item
Particle Size(#)	150 ～ 400	120 ～ 800	120 ～ 325	120 ～ 325	-	230
Shape	Cylindrical	Cylindrical	Cylindrical	Cylindrical	Cylindrical	Cylindrical
Material / Abrasive	CBN / Diamond	CBN / Diamond	CBN	Diamond	Diamond	CBN / Diamond
Diamond Part Maximum Diameter(mm)	0.3 ～ 20	0.3 ～ 15	-	-	-	-
Diamond Length / Grindstone Length(mm)	2 ～ 10	2 ～ 10	-	-	-	-
Shaft Diameter(mm)	3 ～ 10	-	3	3	-	3

Configure

Specification/Dimensions

Classification
- Electroplated Burr
- Internal Grindstone
Clear

Model
- Single Item
- Set Product
- Diamond Disc Mandrel
Clear

Metric / Inch
- metric
Clear

Particle Size(#)
80

100

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140/170

150

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230

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325

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Clear

Shape
- Abacus Type
- Taper Type
- Taper Round Tip
- Sharp Point
- Sharp Round Point Type
- Cylindrical
- Reverse Tapered
- Spherical
- Elliptic Model
- Flat
- Bullet-shaped
- Tapered Shell
- Taper Flat Point
- Conical round tip
Clear

Material / Abrasive
- CBN
- Diamond
Clear

Diamond Part Maximum Diameter(mm)
0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

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1.1

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1.9

2

2.1

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2.9

3

3.3

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4.5

4.7

4.8

5

5.5

6

6.5

7

7.5

8

8.5

9

9.5

9.7

10

11

12

13

14

15

16

16.5

17

18

19

20

21

25
Clear

Diamond Length / Grindstone Length(mm)
1

1.2

1.5

1.6

2

2.5

3

4

5

5.2

6

7

7.24

8

9

10

11.2

12

13

14

15

16

17

18

19

20

21

22

25

26

32

38

40

45

48
Clear

Shaft Diameter(mm)
1.6

2.34

2.35

3

6

10
Clear

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Diamond & CBN Burrs（Classification：Internal Grindstone）

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Specification/Dimensions

Classification

Model

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Material / Abrasive

Diamond Part Maximum Diameter(mm)

Diamond Length / Grindstone Length(mm)

Shaft Diameter(mm)

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Related Categories to Diamond & CBN Burrs

About This Website

About MISUMI Corporation

Contact us Monday to Friday: 8:00 am to 6:00 pm (Mexico City time)