ATA International Product Catalogue

220392 1494 CONTACT INFORMATION For more information please call +353 49 435 2138 or send an email to ask@atagroup.ie Recommended cutting data for solid carbide twist drill, with interior cooling supply 25×D dilling depth Group Material Material group  <= 1.5mm  <= 2mm  <= 3mm Vc m/min n min –1 Vf mm/min fz mm n min –1 Vf mm/min fz mm n min –1 Vf mm/min fz mm N Aluminium long chipping 9.1 130 13,800 621 0.045 14,490 869 0.060 13,800 1,242 0.090 Aluminium short chipping 9.2 160 15,287 764 0.050 14,013 925 0.066 13,588 1,291 0.095 Aluminium alloys < 12% Si 9.3 120 12,739 510 0.040 13,376 722 0.054 12,739 1,083 0.085 Copper 10.1/10.3 75 11,146 223 0.020 11,943 318 0.027 7,962 358 0.045 Copper alloys (bronze/brass) 10.2 90 13,376 535 0.040 14,331 774 0.054 9,554 812 0.085 Thermoplastics 11.1 /11.5 100 10,616 478 0.045 11,146 669 0.060 10,616 955 0.090 Duroplastics 11.2 150 12,739 510 0.040 14,331 774 0.054 12,739 1,083 0.085 C Fibre-reinforced plastics thermoplastics (GRP/CFRP) 11.3.2 65 11,730 528 0.045 10,350 621 0.060 6,900 621 0.090 Fibre-reinforced plastics duroplastics (GRP/CFRP) 11.3.3 65 11,730 469 0.040 10,350 559 0.054 6,900 552 0.080 30×D dilling depth Group Material Material group  <= 1.5mm  <= 2mm  <= 3mm Vc m/min n min –1 Vf mm/min fz mm n min –1 Vf mm/min fz mm n min –1 Vf mm/min fz mm N Aluminium long chipping 9.1 120 12,739 459 0.036 13,376 642 0.048 12,739 917 0.072 Aluminium short chipping 9.2 150 14,331 573 0.040 13,137 696 0.053 12,739 1,019 0.080 Aluminium alloys < 12% Si 9.3 110 11,677 374 0.032 12,261 527 0.043 11,677 747 0.064 Copper 10.1/10.3 70 10,403 208 0.020 11,146 296 0.027 7,431 297 0.040 Copper alloys (bronze/brass) 10.2 80 11,890 357 0.030 12,739 561 0.044 8,493 510 0.060 Thermoplastics 11.1 /11.5 90 9,554 344 0.036 10,032 482 0.048 9,554 688 0.072 Duroplastics 11.2 120 10,191 326 0.032 11,465 482 0.042 10,191 652 0.064 C Fibre-reinforced plastics thermoplastics (GRP/CFRP) 11.3.2 65 11,730 422 0.036 10,350 497 0.048 6,900 497 0.072 Fibre-reinforced plastics duroplastics (GRP/CFRP) 11.3.3 65 11,730 364 0.031 10,350 414 0.040 6,900 428 0.062 Drilling strategy Test result: Material 3.2315 Al Mg Si 1 / Drilling depth 180 mm  6 Pilot drill: Art. 22 0409 /  6.0 tol. m7 × 35 (5×D) Vc = 280 m/min n = 15,000 rpm f = 0.2 mm/rev ap = 2 × D (12 mm) Emulsion/cooling pressure 70bar Drilling strategy Deep hole drill Art. 22 0392 /  6.0 tol. h7 × 180 (30×D) Vc = 120 m/min n = 6,300 rpm f = 0.2 mm/rev ap = 30 × D (180 mm) Emulsion/cooling pressure 70bar 11 Index 10 9 OIL 8 7 6 5 4 3 2 1