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Extra-long twist drill bit DIN 1869 type FN HSS ground 7x370 mm

Extra-long twist drill bit DIN 1869 type FN HSS ground 7x370 mm

Extra-long twist drill bit DIN 1869 type FN HSS ground 7x370 mm
Item no: 1010421 128 

Online price:

Still in stock: 8

Application
For drilling holes up to approx. 10xD, without chip removal. For steel up to 1000 N/mm², cast iron, aluminium alloys, brass and bronze.

Execution
  • Flat flute profile
  • With straight shank
  • Right-cutting
  • Tip angle 130°
  • Cone polished section with point thinning in accordance with DIN 1412 shape A
  • Flat wide chip grooves, rounded back edges
  • HSS, ground

Notes
The flat flute profile allows extremely deep drilling and ensures sufficient coolant supply.

Brand: HARTNER
Material to be processed: Grey cast iron | Steel
Cutting edge diameter: 7 mm
Length: 370 mm
Chip flute length: 250 mm
Max. drilling depth (D): 10xD
Angle of the tip: 130 Degree
Cutting material: HSS
Surface: Uncoated
Tool holding device: Cylinder shank
Type: FN
DIN: 1869
Coolant supply: External
Cutting direction: Right-hand cutting
Number of cutting edges: 2 PCS
Min. f in non-ferrous metals: 0,13 mm/r
Max. f in non-ferrous metals: 0,13 mm/r
f steel 700: 0,10 mm/r
Min. f in steel: 0,10 mm/r
Max. f in steel: 0,10 mm/r
Min. f in stainless steel: 0,06 mm/r
Max. f in stainless steel: 0,06 mm/r
Min. f in cast iron: 0,11 mm/r
Max. f in cast iron: 0,11 mm/r

Manufacturer part no.: 81640 7

EAN no.: 4031096098264

Product Datasheet Datasheet cutting values
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