Page 43 - Centerdrill Produktkatalog 2020 English

G1/2“ - 19.9 Surface without collar

Centerdrill 19.9 long Centerdrill 19.9 short-flat Centerdrill 19.9 long-flat

Order no.: 3651990 Order no.: 3551990
Product discription: 19.9 short-flat Product discription: 19.9 long-flat

Thread type: DIN EN ISO 228/ DIN 2189 Thread type: DIN EN ISO 228/ DIN 2189
Thread size: G 1/2“ x 14 Thread size: G 1/2“ x 14
Centerdrill core hole: 19,9mm Centerdrill core hole: 19,9mm

Working part L1: 36,6mm Working part L1: 47,0mm
Shank-ø: 18,0mm h6 Shank-ø: 18,0mm h6

Surface workpiece: flat / plan, without collar Surface workpiece: flat / plan, without collar
Max. Material thickness: 4,5mm Max. Material thickness: 9,0mm
Suitable for materials: Steel, Stainless steel, Brass, Suitable for materials: Steel, Stainless steel,

Aluminum, Copper Brass, Aluminum, Copper

Reference values for G 1/2“ in 2mm Material thickness

Material

Process data Stainless steel Steel Copper Brass Aluminum
RPM Centerdrill 1000 1200 1800 1800 1800

RPM Centertap 70-90 140-230 240-300 240-300 240-300

kW-Power + 4,2 3,2 3,2 3,2 3,2
Feed rate (mm/min)* + 50-150 50-150 50-150 50-150 50-150

• *While removing the collar, the feed rate should be increased at the end of the process, approx. 900 mm/min.
• 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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