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HiPer-Drill base body, 8×D, ⌀ DC: 21mm
Article no.: 231615 21
Article code:
- Version: 8×D
- Shank: ISO 9766
- Use for drilling: limited cross-drilling; limited drilling through a stack; limited drilling with oblique exit; limited oblique spot drilling
- Number of cutting edges Z: 2
- Through-coolant: yes
Product details
Technical Data
| Series | HiPer-Drill | |
| Version | 8×D | |
| Shank | ISO 9766 | |
| Use for drilling | limited cross-drilling; limited drilling through a stack; limited drilling with oblique exit; limited oblique spot drilling | |
| Number of cutting edges Z | 2 | |
| Through-coolant | yes | |
| Dia. range Dc | 21 mm - 21.99 mm | |
| Reach L1 | 176 mm | |
| Shank ⌀ Ds | 25 mm | |
| Shank length Ls | 56 mm | |
| Clamping screw | 231999 9IP (2.2 Nm) | |
| Overall length L | 264 mm | |
| Type of product | Indexable drill |
Identification numbers & Classifications
| Article number | 231615 21 | |
| EAN / GTIN | 4045197603265 | |
| Manufacturer number | 231615 21 |
Description
Version:
- Very high feed rates and maximum performance due to optimally matched geometries and materials.
- Precise positioning of the cutter insert due to Vee insert seating and secure clamping by the centre bore.
- High concentricity when assembled.
- Shank support for optimum stability in operation.
Application:
For stationary and rotating use. For holes up to IT9 accuracy.
Recommendation:
Drill the pilot hole.
Note:
Further sizes up to ⌀ 50.99 mm available on request.
The insert screw must be replaced after every fifth change of cutter insert.
reduce vf values by 20 %.
Clamp in a hydraulic chuck (such as No. 302026 size 20) for optimum radial run-out.
For optimum stability, clamp the drill so the overhang is as short as possible.
For process reliability when using the drill, initial pilot drilling to 1.5×D with the drill No. 231600 with the same cutter insert size and type is necessary. The generation of a pilot hole improves process reliability.
The insert screw must be replaced after every fifth change of cutter insert.
reduce vf values by 20 %.
Clamp in a hydraulic chuck (such as No. 302026 size 20) for optimum radial run-out.
For optimum stability, clamp the drill so the overhang is as short as possible.
For process reliability when using the drill, initial pilot drilling to 1.5×D with the drill No. 231600 with the same cutter insert size and type is necessary. The generation of a pilot hole improves process reliability.