Page 13 - Centerdrill Produktkatalog 2020 English

M4 - 3.7 Surface without collar

Centerdrill 3.7 long Centerdrill 3.7 short-flat Centerdrill 3.7 long-flat

Order no.: 3650370 Order no.: 3550370
Product discription: 3.7 short-flat Product discription: 3.7 long-flat

Thread type: DIN ISO 13 / DIN 371 Thread type: DIN ISO 13 / DIN 371
Thread size: M4x0,7 Thread size: M4x0,7
Centerdrill core hole: 3,7mm Centerdrill core hole: 3,7mm

Working part L1: 7,0mm Working part L1: 9,0mm
Shank-ø: 6,0mm h6 Shank-ø: 6,0mm h6

Surface workpiece: flat / plan, without collar Surface workpiece: flat / plan, without collar
Max. Material thickness: 1,7mm Max. Material thickness: 2,7mm
Suitable for materials: Steel, Stainless steel, Suitable for materials: Steel, Stainless steel,

Brass, Aluminum, Copper Brass, Aluminum, Copper

Order hotline
+49 (0) 6198 / 58 58 97

Reference values for M4 in 1-2mm Material thickness

Material

Process data Stainless steel Steel Copper Brass Aluminum
RPM Centerdrill 2200 2600 3900 3900 3900

RPM Centertap 260-320 950-1100 1400-1600 1400-1600 1400-1600

kW-Power + 1,0 0,8 0,8 0,8 0,8
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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