PFERD TOOLS 25203904 SPB DIN 1897 HSSG N 4,4 STEEL Steel Twist drill bit 4.4 mm Total length 58 mm DIN 1897 10 pc(s)

Drilling tools with cross-grinding for industrial applications Fully ground, right-rotating versions, which generate precise drill holes thanks to their high concentricity and exact centering. Twist drill bits offer PFERD in the STEEL (118° tip angle) and INOX (135° tip angle) versions. High-performance drilling tools in the execution STEEL in HSSG (M2) for industrial applications. Fully ground right-hand cut design with cross polished section, which produces accurate boreholes thanks to its high concentricity and exact centering. Extra-short twist drills according to DIN 1897 preferred for robot and machine use.


Technical data
- RPM of, gray cast iron, white cast iron: 730 RPM
- RPM of, hard non-ferrous metals: 1810 RPM
- RPM of soft non-ferrous metals: 2180 RPM
- RPM of, steels above 700 N/mm²: 1450 RPM
- RPM of, steels up to 700 N/mm²: 1810 RPM
- RPM of, thermoplastic plastics, fiber-reinforced plastics (GRP/CFK): 1090 RPM
- RPM to, gray cast iron, white cast iron: 1810 RPM
- RPM to, hard non-ferrous metals: 3620 RPM
- RPM to, soft non-ferrous metals: 4350 RPM
- RPM bis, steels above 700 N/mm²: 1810 RPM
- RPM bis, steels up to 700 N/mm²: 2540 RPM
- RPM to, thermopl. Synthetic, fiber-optic. PLASTICS (GRP/CFK) 2900 RPM
- Design: STEEL
- ø 4.4 mm
- Spiral angle, from: 27 °
- Angle: 118 °
- Spiral length 24 mm
- Length, total: 58 mm

Benefits:
- Universally suitable for steel, cast steel, cast iron, cast iron, bronze, Brass, aluminum.
- Easy centering.
- High service life.
- Very good chip removal.
- High run-out accuracy.
- Precise centering and low feed force thanks to cross-ground.

Application recommendations:
- Observe recommended speeds.
- When drilling metals, use high-quality cutting oil or coolant as far as possible. This promotes smooth running and extends the lifetime of the drill. Exception: Apply petroleum instead of cutting oil when machining aluminum.
- Remove the particles from the workpiece when machining stainless steel (INOX) to prevent corrosion. Clean the workpiece chemically or mechanically (etching/polishing, etc.).

Editable materials:
- Aluminium
- Cast iron
- Black tempering casting (GTS, GJMB)
- Brass
- Bronze
- Non-alloy steel
- Cast iron
- Cast steel
- Crust
- Chipboard
- Copper
- Ductile cast iron
- Duroplast
- Elastomers
- Fibre-reinforced thermoplastics (GRP, CFK)
- Fiber reinforced thermoset (GRP, CFK) fiber content ≤ 40%
- Fiber reinforced thermoplastics (GRP, CFK) fiber content greater than 40 %
- Grey iron / nodular iron (GG/GJL, GGG/GJS)
- Non-ferrous metal hard
- Hard wood
- Other non-ferrous metals
- Other
- Plastics
- Rolling and ball bearing steels
- Non-ferrous metal soft
- Soft titanium alloys (tensile strength 500 N/mm²)
- Soft wood
- Steel
- Steel, cast steel
- Steels up to 1,200 N/mm² (less than 38 HRC)
- Steels above 700 N/mm² (greater than 220 HB)
- Steels up to 700 N/mm² (less than 220 HB)
- Thermoplastic
- Titanium
- Titanium alloys
- Tool steels
- White Templar Cast (GTW, GJMW)
- Wood
- Zinc

Processing tasks:
- Drilling

Drive types:
- Stator drill
- Machine tool
- Drill
- robots
- Stationary machines

Safety Instructions:
- Use eye protection!
- Observe safety recommendations!

This text is machine translated.