HSS step drills

Step drill HSS 11 drilling steps dia. 7-32.5 mm 3-surface shaft dia. 12 mm, designed for common diameters of cable conduit glands

STB HSS 7-32.5/12

Item number:: 25201050
EAN:: 4007220421673

Step drill HSS 11 drilling steps dia. 7-32.5 mm 3-surface shaft dia. 12 mm, designed for common diameters of cable conduit glands 1

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Technical information

Step drill HSS 11 drilling steps dia. 7-32.5 mm 3-surface shaft dia. 12 mm, designed for common diameters of cable conduit glands

Dia. shank: 12 mm
Drill bit dia. range: 7 - 32,5 mm
Drill steps: 7/10.5/12.5/14.5/16.5/18.5/20.5/23.5/25.5/30.5/32.5
Length, total: 96.5 mm
Number, drill steps: 11 pcs.
RPM, hard non-ferrous metals: 180 - 1.400 RPM
RPM, rust and acid-resistant steels: 90 - 920 RPM
RPM, soft non-ferrous metals: 180 - 1.400 RPM
RPM, steels up to 700 N/mm²: 180 - 1.400 RPM
RPM, thermoplastics, fibre-reinforced plastics (GRP/CRP): 90 - 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.

Designed for common diameters of cable glands.

Advantages

Drilling and deburring in a single step.
Completely smooth running and a high cutting performance.
The high-quality drill tip ensures effortless centring and drilling.
The tool taper makes it easier to pull back from drilled plates.
Chips which do not break are neatly removed as with a spiral drill.
Built-up edges and cold welding on the flutes 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: Aluminium; 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 1,200 N/mm² (< 38 HRC); Steels up to 700 N/mm² (< 220 HB); Thermoplastics; Thermosetting plastics; Titanium; Titanium alloys; Tool steels; Tough aluminium alloys; Wood; Zinc

Applications: Countersinking; Deburring; Drilling

Drive types: Column drill; Power drill

Downloads

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

HSS step drills

Step drill HSS 11 drilling steps dia. 7-32.5 mm 3-surface shaft dia. 12 mm, designed for common diameters of cable conduit glands

STB HSS 7-32.5/12

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