High-Performance HSS-E Center Drill Type A for Exact Center Drilling
The HSS-E Center Drill Type A is an essential tool for exact hole preparation in modern metalworking. Featuring a classic 60° countersink angle without a protective chamfer, this model produces an absolutely clean and precisely positioned center hole. The cobalt-alloyed high-speed steel (HSS-E) provides increased red hardness and excellent wear resistance, making the tool ideal for demanding materials. Thanks to the double-ended design, professional users also benefit from high cost-effectiveness in everyday machining operations.
Suitable materials
Technical data
| Item |
Center Drill Type A |
| Main Application |
Center Drilling |
| Packaging unit |
5 Pc
|
- Cutting material: HSS-E (cobalt-alloyed)
- Design: Type A (center hole with 60° countersink angle)
- Benefit: Double-ended for increased tool utilization
- Shank types: Available as cylindrical variant and with a flat
- Packaging unit: Delivered in a practical 5-piece pack
Dimensions of HSS-E Center Drill Type A
|
Item Nr. |
D |
d |
L1 |
L |
| ZB D1,6-HSS-E |
1331928 |
1,6 |
4 |
2 |
35,5 |
| ZB D2,0-HSS-E |
1331929 |
2 |
5 |
2,5 |
40 |
| ZB D2,5-HSS-E |
1331930 |
2,5 |
6,3 |
3,1 |
45 |
| ZB D3,15-HSS-E |
1331931 |
3,15 |
8 |
3,9 |
50 |
| ZB D4,0-HSS-E |
1331932 |
4 |
10 |
5 |
56 |
| ZB D5,0-HSS-E |
1331933 |
5 |
12,5 |
6,3 |
63 |
| ZB D6,3-HSS-E |
1331934 |
6,3 |
16 |
8 |
71 |
|
Item Nr. |
D |
d |
L1 |
L |
| ZBF D1,6-HSS-E |
1331921 |
1,6 |
4 |
2 |
35,5 |
| ZBF D2,0-HSS-E |
1331922 |
2 |
5 |
2,5 |
40 |
| ZBF D2,5-HSS-E |
1331923 |
2,5 |
6,3 |
3,1 |
45 |
| ZBF D3,15-HSS-E |
1331924 |
3,15 |
8 |
3,9 |
50 |
| ZBF D4,0-HSS-E |
1331925 |
4 |
10 |
5 |
56 |
| ZBF D5,0-HSS-E |
1331926 |
5 |
12,5 |
6,3 |
63 |
| ZBF D6,3-HSS-E |
1331927 |
6,3 |
16 |
8 |
71 |
Cutting data
| Worpiece Material |
Vc (m/min) |
Feed fz (mm) |
| Ø 1 |
Ø 2 |
Ø 3 |
Ø 4 |
Ø 5 |
Ø 6 |
|
Steel
|
20-40 |
0,02-0,04 |
0,03-0.06 |
0,04-0,08 |
0,05-0,09 |
0,06-0,1 |
0,07-0,12 |
|
Stainless Steel
|
10-25 |
0,01-0,03 |
0,01-0,035 |
0,015-0,05 |
0,02-0,06 |
0,03-0,07 |
0,04-0,08 |
|
Cast Iron
|
20-40 |
0,01-0,03 |
0,01-0,035 |
0,015-0,05 |
0,02-0,06 |
0,03-0,07 |
0,04-0,08 |
Applications
This tool convinces when creating center holes on lathes and milling machines in workshops, mechanical engineering, and series production. Due to the robust HSS-E cutting material, the spot drill is excellently suited for the process-reliable machining of steel, stainless steel, cast iron, and long-chipping aluminum alloys. It lays the perfect foundation for subsequent twist drills by reliably preventing the following drill from wandering.
Special features
A decisive feature of this centering system is the availability of two different shank designs. The cylindrical variant opens up flexible application possibilities in conventional chucks, while the version with a flat supports particularly rotation-proof fixation in corresponding holders. Together with the practical packaging unit of 5 pieces, consistent and efficient process support is ensured.
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