BILZ piloted counterbore 180 degrees w. detachable pilot HSS T=4 size 4 28.0 mm
Brand: HERMANN BILZ
Length: 61 mm
Art.-no. 11540280
Manufacturer article no. A 280401
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Application
For producing 180° counterbores in connection with interchangeable pilots in steel, (stainless steel), non-ferrous metals, (cast) and special alloy material groups up to a strength of 1000 N/mm² in single part production.
Execution
- profile-ground piloted counterbore with removable pilot with twisted cutting edge, with three cutting edges for diameters up to 17.5 mm, or four cutting edges as from 18.0 mm diameter
Advantage
- very positive chip angle ensures a very soft cut in long-chipping materials up to 1000 N/mm2 and minimises the cutting forces
- wide chip chambers for smooth chip removal
- innovative cutting geometry provides excellent cutting performance and good finish quality
 | |
Brand | HERMANN BILZ |
Manufacturer Part Number | A 280401 |
Construction size | 4 |
Spot-facer diameter (Dk8) | 28 mm |
Hole diameter of mount (D1) | 6 mm |
Manufactured part diameter (D2) | 7.7 mm |
Thread dimension (G) | M8 |
Projecting length (E) | 38 mm |
Length (L) | 61 mm |
Number of cutting edges | 4 PCS |
Cutting material | HSS |
Gross Weight | 0.130 kg |
| Material groups for cutting values | Description regarding DIN | Strength Class [N/mm²] | Material No. | Vc [m/min] | f [mm/r] with diameter | Suitability |
|---|---|---|---|---|---|---|
| 1.00 Steels | ||||||
| 1.01 Free machining steel | 9 S 20 | < 900 | 1.0711 | 25-32 | 0.35-0.5 | ⚫ |
| 1.02 Structural steel | ST 37-2 | <500 | 1.0037 | 25-32 | 0.35-0.5 | ⚫ |
| 1.03 Structural steel | ST 60-2 | > 500 | 1.7735 | 25-30 | 0.35-0.5 | ⚫ |
| 1.04 Heat-treated steel | 42 CrMo 4 | <1000 | 1.7225 | 20-30 | 0.35-0.45 | ⚫ |
| 1.05 Cast iron | GS-45 | <1000 | 1.0446 | 18-22 | 0.35-0.45 | ⚫ |
| 1.06 Case-hardened steel | 16 MnCr 5 | <1200 | 1.7131 | 18-25 | 0.32-0.45 | ⚫ |
| 1.07 Ferritic/martensitic stainless steel | X 10 Cr 13 | <1100 | 1.4006 | 12-16 | 0.32-0.45 | ⚪ |
| 1.08 Heat-treated steel | 43 CrMo 4 | >1000 | 1.3563 | 12-15 | 0.32-0.45 | ⚪ |
| 1.09 Nitriding steel | 31 CrMoV 9 | <1300 | 1.8519 | 8-15 | 0.32-0.45 | ⚪ |
| 1.10 Tool steel | X 38 CrMoV 5 1 | <1300 | 1.2343 | 10-17 | 0.32-0.45 | ⚪ |
| 2.00 Stainless steels | ||||||
| 2.01 Austenitic stainless steel | G-X 2 CrNiMo 18 15 | <1100 | 1.3953 | 8-12 | 0.32-0.45 | ⚪ |
| 3.00 Non-ferrous metals | ||||||
| 3.01 Long-chipping aluminium | AI99.9 | <500 | 3.0305 | 70-100 | 0.42-0.53 | ⚫ |
| 3.02 Short-chipping aluminium | G-AISi12 | <500 | 3.2581 | 40-80 | 0.42-0.53 | ⚫ |
| 3.03 Copper alloy bronze, long-chipping | CuSn4 | <1200 | 2.1016 | 20-35 | 0.4-0.5 | ⚫ |
| 3.04 Copper alloy bronze, short-chipping | CuNi12Zn24 | <850 | 2.0730 | 20-35 | 0.4-0.5 | ⚫ |
| 3.05 Copper alloy brass, long-chipping | Cu Zn 20 | <600 | 2.0250 | 30-50 | 0.42-0.53 | ⚫ |
| 3.07 Thermoplastic | Cu Zn 39 Pb 3 | <600 | 2.0381 | 30-40 | 0.42-0.53 | ⚫ |
| 3.07 Thermoplastic | PVC, Acrylglas | <100 | 30-40 | 0.42-0.53 | ||
| 3.08 Duroplast | Bakelit, Melamin | <150 | 30-40 | 0.42-0.53 | ||
| 3.09 Fibre-reinforced plastics | CFK, GFK | <1500 | 30-40 | 0.42-0.53 | ||
| 3.10 Graphite | C8000 | <60 | - | - | ||
| 3.11 Composite materials | - | - | ||||
| 4.00 Cast metal | ||||||
| 4.01 Grey cast iron | GG10 | <260 HB | 0.6010 | 16-25 | 0.32-0.45 | ⚪ |
| 4.02 Spheroidal graphite iron | GGG 40 | <310 HB | 0.7040 | 16-25 | 0.32-0.45 | ⚪ |
| 4.03 Ductile iron | GTW-55 | <280 HB | 0.8055 | 16-25 | 0.32-0.45 | ⚪ |
| 5.00 Special alloys | ||||||
| 5.01 Titanium alloy | TiAI5Sn2,5 | <1200 | 3.7115 | 8-15 | 0.32-0.45 | ⚪ |
| 5.02 Nickel-based alloy | NiCr21Mo | <1400 | 2.4858 | - | - | |
| 5.03 Super alloys | X45CrSi 9 3 | <1400 | 1.4718 | - | - | |
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