NXA Runout Probe


The NXA Runout Probe is a simple electronic tool designed to detect and measure shaft runout. The new tool represents a unique application of a linear variable displacement transducer (LVDT) to provide an easy-to-use but highly accurate measure of machinery problems that can confound the measurement and correction of shaft misalignment.

The Probe connects to the NXA laser shaft alignment tool via Bluetooth. The NXA comes pre-installed with two firmware utilities (firmware version 4.0.0 or higher, activation may be required) that work with the Probe:

  • Sensor Display ROP (Runout Probe)
  • Max-Min ROP (Runout Probe)

When measuring runout with the new NXA Runout Probe the best practice is to first measure the coupling for non-circular rotation. If runout is detected, the next step is to measure the shaft to determine if the runout is caused by a bent shaft versus an eccentric coupling.

Technical Specifications

  • Housing, material: ABS Plastic
  • Operating temperature: 0 to 40°C (32 to 104 °F)
  • Weight: 142 g (5,01 oz)
  • Battery unit dimensions: 44 mm x 91 mm x 33 mm (1.7” x 3.6” x 1.3”)
  • Measuring pen dimensions: Length: 85 mm. (3,34”)
  • Diameter: 8 mm (0,31”)
  • Cable length: 400 mm (15,7”)
  • Enclosure protection class: IP 65 (dust proof and protected again water jets
  • Measuring force: 0,70 N ± 25%
  • Repeatability: 0,15 µm
  • Measurement accuracy: ±MAX(5+|2*K|;|7*K|) µm
  • Diameter, measuring tip: Ø 3 mm (0,12”)
  • Thermal drift: 0,25 µm/°C
  • Wireless communication: Bluetooth transmitter/receiver Class I
  • Communication range: 10 m (33 ft)
  • Operating time: 11 hours of continuous operation
  • Battery charging time: 8 hours (at room temperature with system OFF)
  • Battery capacity: 10,4 Wh
  • Measurement Range:  0.098 inches

What’s Included

  • The LVDT Probe
  • Bluetooth connector
  • Rechargeable battery pack
  • Three-joint articulated arm which attaches to a magnetic base (base not included)
  • Carrying case