HSS step drills

Item number:: 25201050
EAN:: 4007220421673

Copy of es_MX: Broca escalonada HSS 11, etapas perforación Ø 7-32,5 mm, vástago triang. Ø 12 mm, adaptada a diámetros convencionales de racores roscados para cables 1

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Technical information

Dia. shank: 0,472 Inch
Dia. shank: 12 mm
Drilling range, from: 0,275 Inch
Drilling range, from: 7 mm
Drilling range, to: 1,28 Inch
Drilling range, to: 32.5 mm
Number, drill steps: 11 pcs.
Overall length: 3,799
Overall length: 96.5 mm
RPM from, hard non-ferrous metals: 180 RPM
RPM from, rust and acid-resistant steels: 90 RPM
RPM from, soft non-ferrous metals: 180 RPM
RPM from, steels up to 220 HV (95 HB): 180 RPM
RPM from, thermoplastics, fibre-reinforced plastics (GRP/CRP): 90 RPM
RPM to, hard non-ferrous metals: 1400 RPM
RPM to, rust and acid-resistant steels: 920 RPM
RPM to, soft non-ferrous metals: 1400 RPM
RPM to, steels up to 220 HV (95 HB): 1400 RPM
RPM to, thermoplastics, fibre-reinforced plastics (GRP/CRP): 920 RPM
Version: HSS
Packaging unit: 1 piece

Description

HSS step drills for drilling and deburring thin sheets, pipes and profiles made from various materials. To ensure reliable torque transmission, all step drills have a three-surface shaft.

Advantages

Drilling and deburring in a single step.
Completely smooth running and a high cutting performance.
The high-quality drill tip ensures easy centering and drilling.
The tool taper makes it easier to pull back from drilled plates.
Long and solid chips are quickly and easily removed similar to the chip produced by a spiral drill.
Built-up edges and cold welding on the blades are prevented.

Recommendations for use

Use HSS step drills on sheets, pipes and profiles with a maximum thickness of 4 mm.
Use cutting oil/compressed air as a coolant and lubricant in the case of step drills without a coating.

Safety notes

To ensure reliable torque transmission, step drills have a three-surface shaft.

Materials that can be worked: Aluminum; Brass; Bronze; Case-hardened steels; Chipboard; Copper; 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 %; Hard non-ferrous metal; Hardwood; Other; Other non-ferrous metals; Plastics; Soft aluminium alloys; Soft titanium alloys (tensile strength 500 N/mm²); Soft wood; Steel; Steel, cast steel; Steels up to 220 HV (< 95 HB); Steels up to 370 HV (< 38 HRC); Thermoplastics; Thermosetting plastics; Titanium; Titanium alloys; Tool steels; Tough aluminium alloys; Wood; Zinc

Applications: Countersinking; Deburring; Drilling

Drive types: Column drill; Power drill

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HSS step drills

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