Krautkrämer CHAT
Krautkrämer CHAT ultrasonic railway axle testing ndt inspection

High-speed railway and urban train systems, equipped with hollow axles, are frequently used in the transportation industry. Increased travel speeds place higher stresses on these systems requiring special attention to the structural integrity and reliability of trains and their axles.

Krautkrämer's Compact Hollow Axle Tester (CHAT) combines the proven HW probes with Krautkrämer’s high-quality USIP 40 ultrasonic instrument. With up to eight probes in one probe holder, in a diameter range from 30 to 90 millimeters, full A-scan data recording, C-scan displays (separate or merged with TOF correction), and two motorized scanning axes, CHAT offers a typical inspection time of 12 to 15 minutes for an entire axle, while the spiral scan pattern guarantees full coverage of the test object.

We used to be GE Inspection Technologies, now we’re Waygate Technologies, a global leader in NDT solutions with more than 125 years of experience in ensuring quality, safety and productivity.

Product Features
Full Diameter Coverage

The Krautkrämer CHAT's Electronics and mechanics have been designed to cover the entire diameter range.

Diameter Adaptability

The Krautkrämer CHAT rapidly adapts to new diameters just by exchanging centering devices (3 parts in total).

Motorized Motion

The Krautkrämer CHAT features motorized motion (closed control circuits) in a linear direction and for probe holder rotation.

Continuous Rotation

The Krautkrämer CHAT features signal connection through the slip ring to allow continuous rotation of the probe holder and to reduce the inspection time.

Easy Connection

The Krautkrämer CHAT allows for quick pluggable cable connections between trolley and inspection mechanics.

Light Design

The light design of the Krautkrämer CHAT's inspection mechanics allows it to be handled “just by one person” with no need for lifting.

Minimized Oil Loss

The Krautkrämer CHAT includes a closed-loop for oil coupling to minimize oil loss during the inspection.

A-scan Recording

The Krautkrämer CHAT features full post-processing possibilities thanks to A-scan recording.

Krautkrämer CHAT Technical Specifications
Explore Krautkrämer CHAT's Technical Specifications
  • Endless rotation of the probe holder
  • Oil coupling closed-loop system
  • Modular push/pull U-profile to inspect the whole axle length just from one side
  • Rotation: 35 RPM; Linear: 30mm/s max
  • Position tracking with encoders on both axis
Inspection Length 
  • 2,4 m typical with connectable U-profiles, extensions available
Inspection time
  • 15 min typical, depending on UT setup.

Moveable trolley that carries the following:

  • PC (notebook equipped with own battery)
  •  UT-Instrument
  • PLC
  • Oil tank with pumps
  • Storage space for inspection mechanics and U-profiles.
  • Inspection mechanics approx. 10 kg plus trolley approx. 90kg (without Oil, UPS, main power cable).
  • 220-240V ~50Hz, 15 m mains cable at the trolley.
  • Optional: 10 min UPS (+13kg) to allow UT-Instrument and PLC to stay online while changing the main power plug connection.

Talk to an expert

Get in touch with one of our Waygate Technologies subject matter experts.

Get in touch with an expert.

Your request has been submitted.
Thank you for your interest. A specialist will be in touch with you shortly.

Ultrasonic Railway Axle Testing Solutions