Easy-Laser® E420 - Shaft alignment

An entry level system for shaft alignment

Easy-Laser® E420 is an entry level shaft alignment system, with features you would normally only find in more expensive systems. With E420 you can carry out the following:

  • Align the machine
  • Check soft foot
  • Document and share the results

The measuring units are incredibly compact featuring wireless technology, an integrated rechargeable battery and large 20 mm TruePSD detectors. This means that they are easy to install on most types of machines, even where there is limited space. The wireless technology gives you full freedom of movement around the machine that is to be aligned.

Programs for alignment of both horizontal and vertical machines are included. Added to that are functions for soft foot control, thermal growth compensation and tolerance control. 

Easy to use

The measurement system is very easy to use. Pre-mounted units make it easy to install on the machine and the programs guide you step-by-step through the process. Start with the measuring units positioned anywhere on the shaft, recording three readings with as little as 20° of rotation between readings. Then adjust the machine with the live values, and save the measurements in the display unit memory. You can also transfer the results to the database EasyLink ™ program (included) for PC. Easy-Laser® E420 has everything an entry level system should have, and more. 

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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

Horizontal machines
Horizontal machines

Horizontally mounted machines often consist of a pump and a motor, but can also include other types of machines such as gearboxes and compressors. Regardless of the machine type, it is easy to measure and align with Easy-Laser®. The measuring units (M and S) are easily mounted on each side of the coupling and communicate with the display unit wireless. Then follow the step-by-step instructions on screen.

Vertical/flange mounted machines
Vertical/flange mounted machines

This program is used for alignment of vertical and flange-mounted machines, e.g. pumps, motors, gear boxes. Shows centre offset, angular error and shim value at each bolt.

Soft foot check

Alignment work begins with a soft foot check. The soft foot check ensures that the machine is resting evenly on all its feet by indicating which foot/feet should be adjusted. This is an important part of securing a reliable alignment. After the soft foot check is complete, you can go directly to the alignment program with all of the machine’s distance values saved.

Values program
Values - Digital dial indicator

The Values program can be used e.g. when one wants to measure as with dial gauges and to check bearing play or shaft load. With the standard equipment and completely normal set up on the machine!

Measurement methods


Measurement points are recorded at fixed points 9, 12 and 3 o’clock. This is the classic three-point method which can be used in most cases.

EasyTurn™ function
EasyTurn™ function

The EasyTurn™ function allows you to begin the measurement process from anywhere on the turn. You can turn the shaft to any three positions with as little as 20° between each position to register the measurement values. Voila! Measurement is complete!

Smart functions

Measurement value filter
Multiple sets of feet
Thermal growth compensation
Tolerance check
Multiple languages


EasyLink™ PC software
Save to USB memory
Save to built-in memory
Make a printout

Display unit E53

The display unit has a thin, easy-to-grip rubber coated exterior for secure handling. The large well-spaced panel buttons correspond to clear graphics that guide you through the measurement process with ease. Water and dust proof to class IP65.

Language selection

Choose the language that you want to appear on screen. English, German, French, Spanish, Portuguese, Swedish, Finnish, Russian, Dutch, Polish, Italian, Japanese, Korean and Chinese are available. 


  • Robust, rubber coated design, IP65.
  • Large 5.7” colour display.
  • Language selection and symbols.
  • Guiding software.
  • Large internal memory
  • User profiles with your personal settings. 
  • Integrated calculator. 
  • Conversion tool for length units.
  • USB interface.
  1. Battery status check. Possible without starting up the system.
  2. Large, easy to read 5.7” colour display. 
  3. Escape button.

Measuring units ELS-20 / ELM-20

The measuring units have large detectors (TruePSD) that allow you to measure from distances up to 3 metres (10 feet). The substantial design made of aluminium and stainless steel guarantees precise measurement and reliable alignment in even the toughest environments. The measuring units are water and dust proof to class IP65.

Always wireless connection

The measuring units are connected to the display unit wirelessly, which gives you full freedom to move around your machines with the display unit!


For charging, connect the two measuring units to the display unit with the supplied splitter cable. This way you can also supply the measuring units with power during measurement, if needed. 


  • Compact units with built-in wireless technology as standard. Integrated rechargeable battery. ​
  • TruePSD technology with unlimited resolution for greatest accuracy.
  • Large 20 mm detectors [0.78ʺ].
  • Dual laser beams and PSDs.
  • With electronic inclinometers in both measuring units, the system knows exactly how they are positioned making it easier to align uncoupled shafts.  
  • Pre-mounted units for quicker mounting.
  • Electronic targets, that is you can see on the screen where the laser beams hit.
  • Sturdy aluminium body. IP65 design.
  • Compact units, easy to mount on the machine also when space is limited. 
  • Battery status indicator on the unit. 
  1. The rods have a height of 60–180 mm. If necessary they can be extended "infinitely" with additional rods. Made of stainless steel.
  2. Laser aperture (line laser)
  3. LED indicator
  4. PSD (20 mm/0.78")
  5. Sturdy aluminium body
  6. On/Off button
  7. Connector for charger cable
  8. Pre­mounted units/brackets

A complete system contains

  • 1 Measuring unit M
  • 1 Measuring unit S
  • 1 Display unit
  • 2 Cables 2 m [78.7”]
  • 2 Shaft brackets with chains
  • 2 Extension chains
  • 4 Rods 120 mm  [4.72”]
  • 4 Rods 60 mm  [2.36”]
  • 1 Measuring tape 3 m  [9.8’]
  • 1 USB memory stick with EasyLink™ software
  • 1 USB cable
  • 1 Charger (100-240 V AC)
  • 1 Shoulder strap for display unit
  • 1 Quick reference manual
  • 1 Carry case

Display Unit

Part No.
Type of display/size
VGA 5.7” colour screen, backlit LED
Displayed resolution
0.01 mm / 0.5 thou
Power management
Internal battery (fixed)
Heavy duty Li Ion chargeable
Battery compartment
USB A, Charger
Operating temperature
-10–50 °C
BT wireless technology
Internal memory
>2000 measurements can be saved
Help functions
Calculator, Unit converter
Environmental protection
IP class 65
Housing material
WxHxD: 250x175x63 mm [9.8"x6.9"x2.5"]
Weight (without batteries)
910 g [2.0 lbs]

Measuring Units

ELM20 / ELS20
Part No.
12-0746 / 12-0747
BT wireless technology
Type of detector
PSD 20 mm [0.78"] line laser
0.01 mm [0.5 mils]
Measurement accuracy
±5µm ±1%
Measurement range
Up to 3 m [10']
Type of laser
Diode laser
Laser wavelength
630-680 nm
Laser class
Safety class 2
Laser output
<1 mW
Electronic inclinometer
0.1° resolution
Thermal sensors
-20–60 °C
Environmental protection
IP class 65
Temparature Range
-10–50 °C
Internal battery
Li Po
Housing material
Anodized aluminium/ABS plastics
WxHxD: 69.0x61.5x41.5 mm [2.72"x2.42"x1.63"]
176 g [6.2 oz]

How to perform shaft alignment in 5 steps


E420 Manual


E420 brochure
Product Catalogue rev. 21
Product Overview

For software, see Support > Software download.

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E420 - Shaft alignment

Easy-Laser® E420 is an entry level shaft alignment system, with features you would normally only find in more expensive systems.