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Carbide Pilot Hole Correction Boring Bit
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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.
Part Number
Configured Part Number is shown.
| 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] |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Tool Diameter (mm) | No. | Shank Diameter d (mm) | Overall Length L (mm) | Runout Length (ℓ) (mm) |
|---|---|---|---|---|---|---|---|---|---|
- | 1 Piece(s) | 7 Day(s) or more | 1.8 ～ 2 | 3 | 3 | 40 | 6 ～ 10 | ||
- | 1 Piece(s) | 7 Day(s) or more | 1.8 ～ 3.5 | 4 | 4 | 50 | 6 ～ 15 | ||
- | 1 Piece(s) | 7 Day(s) or more | 2.5 ～ 5 | 6 | 6 | 60 | 10 ～ 20 |
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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 |
■ 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 |
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Additional Products in this Category
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- Solid Reamer for Aluminum, for Blind Holes HR500 Alu S 1678
- Solid Reamer for Through Holes HR500D 1686
- Solid Reamer for Blind Holes HR500S 1685
- CoroDrill 452, Reamer for CFRP (Lysine-rich) Material
- Carbide Long Shank Chucking Reamer CSCRL
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