XT550 – Ex/ATEX Shaft alignment
The Easy-Laser® XT550 Shaft system is developed for hazardous areas and is easily operated through our XT Alignment app. It is an advanced measurement system for alignment of horizontal and vertical/flange mounted rotating machinery.
With XT550 you can carry out the following:
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Align the machine
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Check base twist
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Check bearing play
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Check soft foot
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Document and share the results
The XT550 alignment system has all the features of the XT660 with one major difference – the measuring units are intrinsically safe, which allows the system to be used in potentially hazardous areas.
The system comes with Easy-Laser’s dot laser technology, allowing you to measure large machinery and long spans. The measuring units are approved in accordance with the latest ATEX directive*, and are rated both IP66 and IP67 water and dust proof.
Choose your own display unit
System XT550 comes in two configurations; with or without the ATEX approved ecom Tab-Ex® display unit. The XT Alignment app runs on most iOS and Android units, as well as our own XT display unit. However, those are not allowed in potentially explosive areas, but makes for a perfect complement for use in other places.
Note. For use in Ex-classed areas, the mobile device you’re using must be approved for these areas. Always check for approval labels before entering potentially explosive areas. The XT display unit is not Ex/ATEX approved.
*The XT50 measuring units are ATEX approved which means means they comply with the Essential Health and Safety Requirements relating to the design of products intended for use in potentially explosive atmospheres. Download certificate.
Measurement programs
The featured programs below are the most common used with this system. Please click here for a complete overview of possibilities. *=accessories needed
The user interface is intuitive and guide you through the measurement process. It is animated and zooms into the most important things for each step. You can save the measurements of a machine for As found and As left in the same file.

Measuring units XT50-M / XT50-S
The XT50 measuring units are EX approved for use potentially explosive environments. The units utilize dot-type laser and 1-axis square PSD surfaces. A state-of-the-art OLED display shows the angle of the unit, making it easier to position it on the shaft. IP66 and 67, dust- water- and shockproof. Heavy-duty battery for very long operating times. Built-in wireless technology.
Features
- Built-in wireless technology. Integrated rechargeable battery.
- TruePSD technology with unlimited resolution for greatest accuracy.
- Dual laser beams and PSDs.
- Sturdy aluminium body. IP66/67 design.
- EX approved.
- OLED display shows the angle of the unit.
- Slideable target.
- 20 hours operating time.
Power up with Easy-Laser PLUS™
Easy-Laser PLUS™ is our cloud solution where you:
- Collaborate with your maintenance team on job assignments.
- Collect all your team’s measurement data in one place for quick overview and analysis.
- Copy your measurement data to a new device if your tablet is lost or damaged.
- Restore accidentally deleted files on your tablet.
- Receive information about the latest software updates.
Simply put, Easy-Laser PLUS™ is your hub for the team’s measurement jobs and extra security for your data. And this is just the beginning. Moving forward, Easy-Laser PLUS™ will offer more possibilities that complement your measuring instrument and make it even more powerful.
Display Unit
- Name
- ecom Tab-Ex® 3
- Type of display/size
- TFT 8″ colour screen
- Operating temperature
- -20–55 °C
- Communication
- Bluetooth® 5.0 Wireless technology, WiFi
- Camera
- 13 Mp with flash (rear), 5 Mp (front)
- Dimensions
- WxHxD: 263x162x26 mm [10.3×6.4×1.0″]
- Weight (without batteries)
- 1100 g [2.42 lbs]
- Operating time
- Up to 11 h continuously
- Operating system
- Android™
- ATEX/UKCA Ex classification
- II 2G Ex db ia IIC T6 Gb IP64
II 2D Ex ia tb IIIC T80°C Db
-20°C ≤ Ta ≤ +55 °C - IECEx classification
- Ex db ia IIC T6 Gb IP64
Ex ia tb IIIC T80°C Db
-20°C ≤ Ta ≤ +55°C - Ex certificate number
- EPS 22 ATEX 1055X, IECEx EPS 22.0014X, EPS 22 UKEX 1055X
Measuring Units
- Name
- XT50-M / XT50-S
- Communication
- BT wireless technology
- Type of detector
- 1 axis TruePSD 20×20 mm [0.79×0.79″]
- Resolution
- 0.001 mm [0.05 mils]
- Measurement accuracy
- ±1µm ±1%
- Measurement range
- Up to 20 m [66 feet]
- Type of laser
- Diode laser
- Laser wavelength
- 630-680 nm
- Laser class
- Safety class 2
- Laser output
- <1 mW
- Electronic inclinometer
- 0.1° resolution
- Environmental protection
- IP class 66 and 67
- Operating temperature
- -10–50 °C
- Storage temperature
- -20–50 °C
- Relative humidity
- 10–95%
- Housing material
- Anodized aluminium + PC/ABS + TPE
- Dimensions
- WxHxD: 76×76.5×50.9 mm [3.0×3.0x2.0″]
- Weight
- 316 g [11.1 oz]
- OLED display
- 128×64 pixels
- Operating time
- Up to 20 h continuously
- Ex classification
- II 2 G Ex ib op is IIC T4 Gb, -10°C ≤ Ta ≤ +50°C
- Ex certificate number
- Presafe 17 ATEX 10552X, IECEx PRE 17.0049X
Easy Laser Video 01
XT Horizontal Shaft Alignment program using the XT440 and XT770 measuring units.
How to perform shaft alignment in 5 steps
Five steps to quicker and easier shaft alignment with Easy-Laser laser alignment systems.