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Part Number Complete

BRB3-[1.8-2/0.1]-[6-10/1]

Tool Diameter No. Shank Diameter d Overall Length L Runout Length (ℓ) type Days to Ship

Specification/Dimensions

Tool Diameter(mm)
[1.8-5/0.1mm Unit(s)]
Clear
No.
- 3
- 4
- 6
Clear
Shank Diameter d(mm)
3

4

6
Clear
Overall Length L(mm)
40

50

60
Clear
Runout Length (ℓ)(mm)
[6-20/1mm Unit(s)]
Clear
type
- BRB
Clear

Days to Ship

All

7 Day(s) or Less
Clear

Specify Alterations

Carbide Pilot Hole Correction Boring Bit (Part Number)

Name: Carbide Pilot Hole Correction Boring Bit
Brand: MISUMI
Availability: PreOrder

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Product Description

In case the hole pitch has an intersection or the inclination tolerance of the hole is demanding.
By using it before finishing the reamer, the bend of the hole can be modified.

Carbide Pilot Hole Correction Boring Bit:Related Image

: 30; 60; 90

Part Number
BRB3-[1.8-2/0.1]-[6-10/1]
BRB4-[1.8-3.5/0.1]-[6-15/1]
BRB6-[2.5-5/0.1]-[10-20/1]

Price	Name	Minimum Order Qty.	Days to Ship	Tool Diameter (mm)	No.	Shank Diameter d (mm)	Overall Length L (mm)	Runout Length (ℓ) (mm)
-	BORING BITE	1 Piece(s)	7 Day(s)	1.8 ～ 2	3	3	40	6 ～ 10
-	BORING BITE	1 Piece(s)	7 Day(s)	1.8 ～ 3.5	4	4	50	6 ～ 15
-	BORING BITE	1 Piece(s)	7 Day(s)	2.5 ～ 5	6	6	60	10 ～ 20

Specifications

Model Number		Flute Diameter D 0.1 mm Increment Designation	Recess Length ℓ 1 mm Increment Designation	Overall Length L	Shank Diameter d
	No.
BRB	3	1.8 ~ 2.0	6 ~ 10	40	3
	4	1.8 ~ 2.4	6 ~ 10	50	4
		2.5 ~ 3.5	10 ~ 15
	6	2.5 ~ 3.0	10 ~ 15	60	6
		3.1 ~ 5.0	10 ~ 20

More Information

● When there is tolerance on the hole pitch, or when the allowable margin of error in the hole inclination is very limited, the use of this product before finishing with a reamer allows the hole skew to be corrected.

■Reference examples of machining process
(when positional accuracy, diameter precision, or surface roughness are required)

Finished Diameter	Diameter of Pilot Hole (drill diameter)	Diameter of Pilot Hole (bit diameter)	Spiral Reamer	Pentagonal, Hexagonal Reamer
Ø 2.0	Ø 1.7	Ø 1.8	Ø 1.98	Ø 2.00
Ø 2.5	Ø 2.2	Ø 2.3	Ø 2.48	Ø 2.50
Ø 3.0	Ø 2.7	Ø 2.8	Ø 2.98	Ø 3.00
Ø 3.5	Ø 3.2	Ø 3.3	Ø 3.48	Ø 3.50
Ø 4.0	Ø 3.7	Ø 3.8	Ø 3.98	Ø 4.00
Ø 4.5	Ø 4.2	Ø 4.3	Ø 4.48	Ø 4.50
Ø 5.0	Ø 4.7	Ø 4.8	Ø 4.98	Ø 5.00

[ ! ]Machine the finished diameter with a spiral reamer, after drilling pilot holes, if only positional accuracy is required. (a pentagonal or hexagonal reamer is not required)

■ Cutting Conditions

Bit Diameter	Feed Rate F (mm/min)	Revolution Speed (min^-1)
Ø 1.8	22	3,700
Ø 2.3	25	3,400
Ø 2.8	27	3,100
Ø 3.3	28	2,900
Ø 3.8	30	2,700
Ø 4.3	31	2,500
Ø 4.8	32	2,300

Basic Information

Shank type	End Mill Shank	Work Material	General Steel / Heat-Treated Steel / Stainless Steel / Cast Iron / Aluminum / Copper	Coating Presence	None
Groove Shape	Straight	Base-Blade Availability	None	Diameter Tolerance(mm)	-0.02 ~ 0
Tool Material Type	Carbide