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Technical Specifications

Materials · Geometries · Sizes · Tolerances

MaterialsGeometriesAvailable sizesTolerancesDrill chucks
Materials

Three materials

HSS/Co and M2 drill bits are a must for small diameters: exactly what vent holes in tire molds require. Our standard is HSS/Co, for high elasticity and hardness; some customers prefer the milder M2. Solid HSS is the best choice for tight or precision tolerances, especially when drilling relatively deep holes.

Temis vent drill bits

HSS/Co

High-speed steel with 9% cobalt
  • More flexibility and abrasion resistance than standard HSS
  • Special heat treatment for vent holes in steel and aluminium molds

HSS

High-speed steel
  • The standard high-speed steel drill
  • A cost-effective choice for routine vent cleaning

M2

Molybdenum high-speed steel
  • A widely used HSS grade with good toughness and wear resistance
  • Available across the same size range
Geometries

Three geometries

Drilling in different materials requires a different helix (flute) geometry.

Standard · general work

  • The everyday geometry for drilling and cleaning vent holes
  • Recommended to start deep holes before moving to longer bits

Quick · fast spiral

  • Steeper helix for faster chip removal
  • Suited to quick cleaning cycles

Parabolic · deep drilling, aluminium

  • Recommended for aluminium and deep holes
  • Better chip evacuation, higher feed rates and a better surface finish
  • In deep drilling it preserves tool life and allows tighter tolerances
Drilling in metal
Available sizes

Metric, wire gauge and fractional

Metric (mm)
Diameter
0.150.180.210.40.450.50.530.550.570.610.630.650.70.720.730.750.790.80.90.921.01.11.21.251.31.41.51.61.611.71.92.0 to 2.8 (0.1 steps)3.03.13.23.33.54.0up to 5.0
Helix (flute)
10152025303540506080100120140150180200
Total length
303540424550556065708090100120150180200250300
Wire gauge and fractional (inch)
Diameter
#80 to #451/641/323/641/165/64
Helix (flute)
11.122.5345
Total length
11.122.534568
Need a size that is not listed? Non-standard diameters, extra-long helix and extra-long bits are produced on request. Materials: HSS/Co, HSS, M2 · Geometries: Quick, Standard, Parabolic.
Tolerances

Tolerances and drill geometry

Total length (mm)General tolerance (mm)
> 3 – 6± 0.2
> 6 – 30± 0.3
> 30 – 120± 0.5
> 120 – 315± 0.5
> 315 – 1000± 0.8
Drill geometry
Point angle118°
Flute (helix) lengthup to 200 mm
Shank length25–100 mm
Total length30–300 mm
Accessories

Drill chucks

Adaptors that hold small-diameter drill bits firmly on a drilling machine, hand-held or automatic.

PCSXDB0025
PCSXDB0025
DBCK3000
DBCK3000
Temis vent drill bits
Temis vent drill bits

Download

PDF
Free download · Vent Drill Bits brochure

Materials, geometries, sizes, tolerances and drilling best practices

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