Spiral drill STEEL dia. 7.7 mm HSS-G N DIN 338 118° universal

Technical information

Angle: 118 °
Diameter: 7.7 mm
Flute length: 75 mm
Helix angles: 25 - 30 °
Length, total: 117 mm
PFERD type: SPB DIN338 HSSG N 7,7 STEEL
RPM, grey cast iron, white cast iron: 420 - 1.040 RPM
RPM, harte NE-Metalle: 1.040 - 2.070 RPM
RPM, soft non-ferrous metals: 1.250 - 2.490 RPM
RPM, steels over 700 N/mm²: 830 - 1.040 RPM
RPM, steels up to 700 N/mm²: 1.040 - 1.450 RPM
RPM, thermoplastics, fibre-reinforced plastics (GRP/CRP): 630 - 1.660 RPM
Version: STEEL
Packaging unit: 10 pieces

Description

Drilling tools with cross grinding for industrial uses. Fully ground, right-hand turning versions that produce precise drill holes thanks to their high concentricity and exact centring. PFERD offers spiral drills in the STEEL (118 ° point angle) and INOX (135 ° point angle) versions.

High-performance drilling tools in the STEEL in HSSG (M2) version for industrial uses. Fully ground right-hand turning version with cross grinding that produces precise drill holes thanks to their high concentricity and exact centring.

Advantages

Very good chip removal.
High concentricity.
Exact centring and low feed force thanks to cross grinding.
Suitable for general use on steel, cast steel, grey cast iron, annealed cast iron, bronze, brass, aluminium.
Easy centring.
Long tool life.

Recommendations for use

Observe the recommended rotational speeds.
When drilling metals, use a high-quality cutting oil or cooling lubricant, if possible. This facilitates smooth running and extends the drill tool life. Exception: when working on aluminium, use kerosene instead of cutting oil.
When working on stainless steel (INOX), remove any particles that break away from the workpiece in order to avoid corrosion. Clean the workpiece chemically or mechanically (etching/polishing, etc.).

Safety notes

Wear eye protection!
Follow the safety instructions!

Materials that can be worked: Aluminium; Annealed cast iron; Black annealed cast iron (GTS, GJMB); Brass; Bronze; Case-hardened steels; Casting scale; Casting scale with sand contamination and metal contamination; Cast iron; Cast steel; Chipboard; Copper; Ductile cast iron; Elastomers; Fibre-reinforced thermosetting plastics (GRP, CRP); Fibre-reinforced thermosetting plastics (GRP, CRP) with a fibre content > 40 %; Fibre-reinforced thermosetting plastics (GRP, CRP) with a fibre content ≤ 40 %; Grey/nodular cast iron (GG/GJL, GGG/GJS); Hard non-ferrous metal; Hardwood; Other; Other non-ferrous metals; Plastics; Roller-bearing and ball-bearing steels; Soft non-ferrous metal; Soft titanium alloys (tensile strength 500 N/mm²); Soft wood; Steel; Steel, cast steel; Steels over 700 N/mm² (> 220 HB); Steels up to 1,200 N/mm² (< 38 HRC); Steels up to 700 N/mm² (< 220 HB); Thermoplastics; Thermosetting plastics; Titanium; Titanium alloys; Tool steels; White annealed cast iron (GTW, GJMW); Wood; Zinc

Applications: Drilling

Drive types: Column drill; Power drill; Robot; Stationary machines; Tool machine

Downloads

brochure-drilling-and-countersink-tools-2022-web-en.pdf

HSS spiral drill, version HSSG

Spiral drill STEEL dia. 7.7 mm HSS-G N DIN 338 118° universal

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