PFERD TOOLS 25201049 STB HSS 7-40,5/12 HSS Step drill bit Total length 110 mm 1 pc(s)

HSS step drills for drilling and deburring thin sheets, pipes and profiles made of different materials. For secure transmission of torque, all step drills have a triple shaft. Tuned to the standard diameter of cable pipe glands.


Technical data
- Number of drill steps: 13 pieces
- RPM of, hard non-ferrous metals: 150 RPM
- RPM of stainless and acid-resistant steels: 80 RPM
- RPM of soft non-ferrous metals: 80 RPM
- RPM of, steels up to 700 N/mm²: 160 RPM
- RPM of, thermoplastic plastics, fiber-reinforced plastics (GRP/CFK): 80 RPM
- RPM to, hard non-ferrous metals: 1400 RPM
- RPM to stainless and acid-resistant steels: 920 RPM
- RPM to, soft non-ferrous metals: 920 RPM
- RPM bis, steels up to 700 N/mm²: 1400 RPM
- RPM to, thermopl. Synthetic, fiber-optic. PLASTICS (GRP/CFK) 920 RPM
- Design: HSS
- Drill stages: 7.0/10.5/12.5/14.5/16.5/18.5/20.5/23.5/25.5/30.5/32.5/38.5/40.5
- Ø Shaft metric: 12 mm
- Drilling area, of: 7 mm
- Drilling area, up to: 40.5 mm
- Length, total: 110 mm

Benefits:
- Drilling and deburring in a single step.
- Absolute smoothness and high cutting performance.
- Easy centering and drilling through high-quality drill tip.
- It is easier to pull back through the tool cone when the sheet is drilled through.
- Non-breaking chips are transported off cleanly as with a twist drill.
- The formation of surface cutting and cold welding on the cutting edges is avoided.

Application recommendations:
- Install HSS step drills on sheet metal, pipes and profiles up to a thickness of 4 mm.
- For step drills without coating, use cutting oil or compressed air as cooling/lubricants.

Editable materials:
- Aluminium
- Brass
- Bronze
- Non-alloy steel
- Chipboard
- Copper
- Duroplast
- Fibre-reinforced thermoplastics (GRP, CFK)
- Fiber reinforced thermoset (GRP, CFK) fiber content ≤ 40%
- Fiber reinforced thermoplastics (GRP, CFK) fiber content greater than 40 %
- Non-ferrous metal hard
- Hard wood
- Other non-ferrous metals
- Other
- Plastics
- Soft aluminum alloys
- 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 up to 700 N/mm² (less than 220 HB)
- Thermoplastic
- Titanium
- Titanium alloys
- Tool steels
- Tough aluminum alloys
- Wood
- Zinc

Processing tasks:
- Lower
- Deburr
- Drilling

Drive types:
- Stator drill
- Drill

Safety Instructions:
- For safe torque transfer, step drills have a three-face shaft.

This text is machine translated.