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Fluke 831 Laser Shaft Alignment Tool


Precision laser alignment made easy

The rugged Fluke 831 has an intuitive guided user interface that enables quick and complete shaft alignment without advanced training or complicated programs. And while it’s easy to use, laser alignment with the Fluke 831 is powerful enough for the skilled technician. You can cover more of your machines with all the functionality needed on the plant floor, from thermal growth to user defined tolerances and more.

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Reduce costs by avoiding downtime

Misalignment causes at least half of all damage to rotating machinery, studies show. Instead of fixing the problem, teams often just treat the symptoms of misalignment and replace bearings, couplings, and seals because they think alignment takes too long. Contrary to expectations, laser alignment can be fast and easy. So, every machine that is repaired and overhauled should be aligned – not just a few. Teams that embrace laser alignment can save thousands of dollars per year by avoiding downtime and energy waste and reducing the number of bearings and seals they have to replace.

Key features

  • Fast, easy, and precise alignment that adapts to your needs.
  • Rugged build and the highest-in-class IP rating.
  • Single-laser technology for the fastest, most accurate laser alignment.
  • Cloud connection enables real-time collaboration.
  • Use up to 8 measurement points to achieve precision alignment on vertical machines.
General specifications
CPU Processor: Exynos 9810, 2.7GHz,1.7GHz Octa-Core
Memory: 4 GB RAM, 64 GB Flash memory
Display Technology: TFT
Integrated light sensor for automated adjustment of the brightness to the display according to the lighting conditions hence extending battery life.
Resolution: 1920 x 1200 Pixel
Size: 203.1 mm (8”)
Connectivity Wi-Fi: 802.11 a/b/g/n/ac/ax 2.4G+5GHz, HE80, MIMO, 1024-QAM.
Wireless: 5.0
Camera Main camera resolution: 13.0 MP, Auto Focus
Front camera resolution: 5.0 MP
Environmental protection IP 68: dustproof, submersible 1.5 m
Temperature range Operation: -20°C to 50°C (-4°F to 122°F)
Battery Battery Type: Li-Ion rechargeable battery 3.8 V / 5
3.8 V / 5050 mAh / 19.2 Wh Operating time: Up to 11 hours
Dimensions (without hand straps) Approx. 256 x 149 x 35 mm (10 5/64” x 5 55/64” x 1 3/8”)
Weight (without hand straps) Approx. 710 g (1.6 lbs)

Reflector (prism)

General specifications
Type 90° roof prism
Accuracy (average) > 99%
Environmental protection IP 67 (submersible, dustproof)
Temperature range
Operation temperature range: -20°C to 60°C (-4°F to 140°F)
Storage temperature range: -20°C to 80°C (-4°F to 176°F)
Dimensions Approx. 100 x 41 x 35 mm (4” x 1 5/8” x 1 3/8")
Weight Approx. 65 g (2.3 oz)


General specifications
Measurement principle Coaxial, reflected laser beam
LED indicators 1 LED for laser beam status and battery status
1 LED for wireless communication
Power supply
Battery Lithium-Ion rechargeable battery 3.7 V / 5 Wh
Operating time 10 hours (continuous use)
Charging time Using charger - 2.5 h for up to 90%
3.5 h for up to 100%
Using USB port – 3 h for up to 90%
4 h for up to 100%
Environmental protection
IP 65: Dustproof and water jets resistant, shockproof
Relative humidity: 10% to 90% (non-condensing)
Ambient light protection Yes
Temperature range
Operation temperature range: -10°C to 50°C (14°F to 122°F)
Charging temperature range: 0°C to 40°C (32°F to 104°F)
Storage temperature range: -20°C to 60°C (-4°F to 140°F)
Dimensions Approx. 105 x 69 x 55 mm
(4 9/64” x 2 23/32” x 2 11/64”)
Weight Approx. 210 g (7.4 oz) with dust cap
Measurement range Unlimited, dynamically extendible
Resolution 1 μm (0.04 mil) and angular 10 μRad
Error (avg) < 2%
Measurement range 0° to 360°
Resolution 0.1°
Error (avg) 0.3% full scale
Type Semiconductor laser diode
Wavelength 630 - 680 nm (red, visible)
Safety class Class 2 according to IEC 60825-1:2014. The laser complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007.
Beam power < 1 mW
Beam divergence < 0.3 mrad
Safety precautions Do not look into laser beams.
External interface Wireless communication
Transmission distance Up to 30 m (98 ft) direct line of sight
CE Conformity Hereby, Fluke declares that the radio equipment contained in this product is in compliance with Directive 2014/53/ EU. The full text of the EU declarationis available at the following internet address:
Country radio certifications Visit for more information.
Product Details
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