m&h Radio-wave Touch Probe RWP38.41

m&h RWP38.41 - do not compromise, proven radio-wave transmission from m&h!

The compact radio-wave touch probe RWP38.41 has been developed for machines requiring signal transmission across greater distances where infrared transmission is not sufficient. It is ideally suited for use on machine tools with limited maximum tool diameter and restricted height of the Z axis, particularly with 5-axis heads. It can be extended in a modular way and is the perfect solution for complex measurements. Thanks bi-directional communication the RWP38.41 can be combined with the radio-wave tool setter RWT35.50 and the receiver RWR95.40.

  • Determination of workpiece zero point
  • Determination of workpiece position
  • Control measurement of workpiece dimensions


  • Proven and safe SCS technology
  • Patented THERMO-LOCK® technology
  • Touch probe can be extended almost without limit
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  • Highest operational reliability through transmission protocol
  • Permanent check of radio channels for interfering signals
  • Automatic blocking of channels by Self Channel Select (SCS)
  • 64 radio channels in protected frequency range, proven worldwide
    433 MHz transmitting frequency - internationally approved and high-penetration
  • No machine downtime due to interfering signals
  • High-penetration
  • Automatic blocking of channels by SCS technology


  • Prevents heat transfer from the spindle to the probe
  • Delivers consistent, precise measurement results even by large temperature differences
  • HSK shanks with THERMO-LOCK® technology are available in various sizes
  • Precise measurement results even by large temperature differences
  • Eliminates uncontrolled expansion of the shank and probe body
Modular construction
  • Probe RWP38.41 variable, modular extendible
  • Slim standard extensions can be combined in 3 different lengths
  • Measuring mechanism near the measuring point for highest precision
  • For use on machining centres, turning/milling centres and on 5-axis machines with swivelling heads
Trigger force freely adjustable
  • Measuring of thin sections with minimal measuring force
  • Measuring of soft materials
  • Measuring with large cross probes at max. measuring force
  • No false triggering during acceleration
  • Easy adjustment from the front without dismantling (patented)
Activation / Deactivation
  • Switching on and off via radio-wave transmission
  • With 3 activation codings available, A" / B" / C", it is possible to operate up to 3 measuring systems, RWP38.41 and RWT35.50 with one receiver

Performance and process reliability

  • Protected frequency range, proven worldwide
  • Safe signal transmission redundant transmission protocol
  • 64 channels freely adjustable
  • High transmitting power
Sturdy and protected
  • Probe housing made of stainless steel
  • High protection of measuring mechanism with chip protection lid and double, chemical resistant sealing membranes
  • Measuring mechanism torsion-protected
Operation suitable for the workshop
  • Easy channel adjustment by push of a button
  • Digital channel display
  • Quick battery replacement without tools
 Sensing directions  ±X; ±Y; -Z
 Max. stylus overtravel  XY = ±12.5°; Z = –6 mm
 Trigger force with 50 mm stylus  XY = 0.3 - 1.4 N Z = 2.5 - 12.5 N
 Factory setting   XY = 0.96 N, Z = 8.5 N
 Recommended probing feedrate   254 mm/min - 2000 mm/min
 Power supply   2x battery 3.6 V, ½ AA (1200 mAh)
 Battery lifetime   100% = 325 h 5% = 219 d Standby = 230 d
 Material   Stainless Steel
 Weight without shank   approx. 460 g
 Temperature range   Operation: 10 °C - 50 °C, Storage: 5 °C - 70 °C
 Repeatability   max. 1 μm (2 Sigma) with 50 mm stylus and 254 mm/min probing feedrate
 Transmitting frequency range   433.075 MHz – 434.650 MHz 
 Number of channels   64
 Channel spacing   25 kHz 
 Sealing  IP68: EN60529
Radio-wave Probing Systems Brochure
Operating Instructions
Case Study Modell- und Formenbau Schmidgall