Page 18 - Centerdrill Produktkatalog 2020 English

M8 - 7.3 Surface with collar

Centerdrill 7.3 short Centerdrill 7.3 long

Order no.: 3600730 Order no.: 3500730
Product discription: 7.3 short Product discription: 7.3 long

Thread type: DIN ISO 13 / DIN 371 Thread type: DIN ISO 13 / DIN 371
Thread size: M8x1,25 Thread size: M8x1,25
Centerdrill core hole: 7,3mm Centerdrill core hole: 7,3mm

Working part L1: 14,0mm Working part L1: 18,20mm
Shank-ø: 8,0mm h6 Shank-ø: 8,0mm h6

Surface workpiece: with collar Surface workpiece: with collar
Max. Material thickness: 1,5mm Max. Material thickness: 3,5mm
Suitable for materials: Steel, Brass, Suitable for materials: Steel, Brass,

Aluminum, Copper Aluminum, Copper

M8 Centertap on page 49 Parting paste on page 60

Reference values for M8 in 1-2mm Material thickness

Material

Process data Stainless steel Steel Copper Brass Aluminum
RPM Centerdrill 1800 2100 3200 3200 3200

RPM Centertap 190-240 600-650 650-800 650-800 650-800

kW-Power + 2,0 1,5 1,5 1,5 1,5
Feed rate (mm/min) + 50-150 50-150 50-150 50-150 50-150

• These are recommended values and they may vary significantly, depending on the type of material, material
thickness, lubrication, etc. For thread forming, we recommend our cutting oil. If you use an emulsion, it should
contain at least 8-10% grease.
• CNC-data can be provided on request.

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