Infrared Touch Probe IRP40.42

Low trigger forces and small styli balls for measuring delicate applications

The infrared touch probe IRP40.42 has been specially designed for measuring sensitive materials and thin, fragile workpiece geometries within harsh machine tool environments. The IRP40.42 combines the strengths of the IRP40.02 touch probe with a highly versatile touch trigger probe developed by Hexagon for taking fast, repeatable measurements on coordinate measuring devices.

The trigger forces of the IRP40.42 remain consistently low even at higher probing speeds and greater stylus overtravel, protecting your sensitive workpieces from damage. The IRP40.42 has a repeatability of 2 Sigma 1 μm and can be equipped with styli and stylus balls as small as 0.2 mm.

A robust design means it can operate efficiently under extreme accelerations, high positioning speeds, constant vibrations, hard tool changes and increased temperatures. And its compact size makes it suitable for use within an extremely limited inspection space. 
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Consistently low probing forces
The IRP40.42 was specially developed for measuring thin, fragile workpiece geometries. Its unique technology means it achieves the lowest possible contact forces also with high measuring speeds.

Optimised for measuring in very limited spaces

The measuring unit can be equipped with styli and measuring spheres as small as Ø 0.2 mm, making measurements in previously unreachable positions possible, including when space is limited.

Robust and durable
All mechanical components are IP68 standard protected and designed to withstand the harsh conditions of a machine tool. Extreme accelerations, high positioning speeds, constant vibrations, hard tool changes and elevated temperatures are no problem for the probe.

Innovative HDR+ Infrared Transmission
The HDR+ infrared transmission ensures that only the system’s own signals are processed. There is no interference from ambient light. An innovative design with mirrored surfaces, ensures it achieves homogeneous and true 360° directional transmission characteristics.

The best possible transmission quality is not just dependent on the probe, but also the receiver, which is mounted within the machine. The infrared receivers IRR91.50 and IRR91.42, which also work with HDR+ infrared transmission, can be used with additional Hexagon tool setters inside the machine. This ensures reliable transmission. 
Comparison Speed / trigger forces X/Y   
IRP40.42 with 91.00-T21.5/3-HM-M2 Competitor's probe 
 20 mm/min – 0,11 N  20 mm/min – 0,82 N
 100 mm/min – 0,13 N  100 mm/min – 0,96 N
 254 mm/min – 0,13 N  254 mm/min – 1,09 N
 480 mm/min – 0,13 N  480 mm/min – 1,22 N

Comparison Speed / trigger forces Z   
IRP40.42 with 91.00-T21.5/3-HM-M2 Competitor's probe 
 20 mm/min – 0,72 N  20 mm/min – 2,60 N
 100 mm/min – 0,81 N  100 mm/min – 6,24 N
 254 mm/min – 0,86 N  254 mm/min – 6,26 N
 480 mm/min – 0,93 N  480 mm/min – 6,30 N

 Probing directions  ±X; ±Y; -Z 
 Max. stylus overtravel  XY = ±14°; Z = -4 mm 
 Tripping force* with 20 mm stylus  XY = 0,06 ±0,02 N; Z = 0,8 N ±0,1N
 Recommended probing feedrate  max. 480 mm/min
 Power supply  2x batteries (3.6 V / ½ AA), Standby 12 months
 Max. battery life   approx. 800 h 
 Material  Stainless steel 
 Weight excl. shank  approx. 250 g
 Temperature range  Operation: 10 °C – 50 °C, Storage: 5 °C – 70 °C
 Repeatability (deflection from one direction)  max. 1 µm (2 Sigma) with 20 mm stylus and 254 mm/min probing federate
 Sealing  IP68: EN60529 
 Maximum probing frequency  50 Hz = 50 points/s 
 Shock tested  in ±X; ±Y; -Z, 25 g for 7 ms (2000 times)
 Load resonant frequency  Test passed

* Tripping force = Force when the probing signal is tripped at the touch point not influenced by the machine dynamics (stops without delay when the touch point is reached)