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SUMOCHAM drill body Weldon shank DCN A, 5×D, Size: 21
Article no.: 231710 21
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- Version: 5×D
- Shank: ISO 9766
- Use for drilling: concave; convex; Drilling through a stack; Cross drilling
- Number of cutting edges Z: 2
- Through-coolant: yes
Product details
Technical Data
| Series | SUMOCHAM | |
| Version | 5×D | |
| Shank | ISO 9766 | |
| Use for drilling | concave; convex; Drilling through a stack; Cross drilling | |
| Number of cutting edges Z | 2 | |
| Through-coolant | yes | |
| Dia. range Dc | 21 mm - 21.9 mm | |
| Reach L1 | 105 mm | |
| Shank ⌀ Ds | 25 mm | |
| Shank length Ls | 56 mm | |
| Iscar item designation | DCN 210-105-25A-5D | |
| Manufacturer's designation | DCN 210-105-25A-5D | |
| Type of product | Insdexable Drill |
Identification & Classification
| Article number |
231710 21
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|
| EAN / GTIN |
7291075291261
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|
| Manufacturer number |
3201683
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Description
Version:
SUMOCHAM interchangeable head drilling system for highly efficient drilling with interchangeable cutting edges. Unique clamping mechanism for convenient fixing of the cutter insert without additional clamping screw. Versatile material use due to comprehensive cutter insert range. Optimum tool stability with simultaneously helical coolant channels for high concentricity and lowest possible axial run-out of the bore. Other available versions: base body with round shank, base body for machining chamfers on bores when a chamfer ring is attached, base body especially for use in multi-spindle, sliding headstock and production lathes.
Tolerance class: IT8-IT9, concentricity: 0.03 mm.
Tolerance class: IT8-IT9, concentricity: 0.03 mm.
Application:
Supplied with:
Drill body incl. assembly key for drilling heads.
Note:
- Always select a strategy with medium cutting speeds and high feed rates.
- No rapid traverse and no spindle anti-clockwise rotation during retraction.
- Drilling convex / concave surfaces: Radius of curvature > 15 × DC required, reduce feed rate by up to 50%.
- For cross holes, the maximum permissible diameter is 1/4 of the nominal diameter DC.
- Stack drilling requires stable conditions, reduce gaps between workpiece elements.
- Oblique drill entry and exit up to 7° inclination possible with reduced feed rate (approx. 20 - 30%).
- Designation convention: DCN [size]-[L1]-[⌀DS]A-[L/D]
Examples:
No. 231702 6 DCN 060-009-12A-1.5D
No. 231705 6 DCN 060-018-12A-3D