Authorised HEIDENHAIN distributors

ACC Systems Ltd

Industrial Automation


Workpiece touch probes with infra-red transmission


The TS 440 and TS 444 are compact workpiece touch probes with infra-red transmission, designed for use in machining centres with automatic tool changing. The TS 444 is notable for its power source - it is powered by an integral air turbine.


Outline specifications:

TS 440 TS 444
Probe accuracy ≤ ±5µm when using a standard stylus
Probe repeatability
  • 2σ ≤1µm at a probing velocity of 1m/min
  • Typical values:
  • 2σ ≤1µm at a probing velocity of 3m/min
  • 2σ ≤4µm at a probing velocity of 5m/min
Deflection of probe contact ≤5mm in all directions (with stylus length L=40mm)
Deflection forces
  • Axial: approx 7N
  • Radial: 0.7 to 1.3N
Probe velocity ≤5 m/min
Taper shank
  • With taper shank - see accessories
  • Without taper shank - connecting thread M12 x 0.5)
Signal transmission Infrared transmission with 360° range
Transmission angle of infrared signal 0° or +30° (specify when ordering)
Transmitter & receiver unit SE 540 or SE 640 (specify when ordering)
Switch on/off Infrared signal from SE -
Power supply Batteries, rechargeable and non-rechargeable
  • Compressed air.
  • Recommended operating pressure 5.5 to 8 bar
Energy buffer 2 batteries (rechargeable or non-rechargeable), size 2/3 AA or size N, each with 1V to 4V
  • Integrated high-power capacitors;
  • Charging time: typ. 3sec at 5.5 bar
Operating time (approx.) Continuous duty typically 200h with lithium batteries 3.6V/1200 mAh Typ. 120 sec

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