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L-743 Machine Center Alignment System

L-743 Machine Center Alignment SystemTransfer-Line Wing Bases

The L-743 Ultra-Precision Triple Scan® Laser is the ideal instrument to quickly and accurately calibrate the geometry of almost all machining centers. It is also very useful for setting the wing bases on transfer lines perpendicular to the line's centerline. It can also be used to set the elevation of the bases and to make the "ends" parallel to the centerline.

 The L-743 is one of only 2 lasers in the world (the other is the L-733) to offer 3 automatically rotating laser planes that are accurate enough for today's ever-tightening tolerances. This creates a powerful tool that not only FINDS, but also FIXES geometry problems, all in a fraction of the time needed with conventional methods.

200' Range for Flatness and Straightness

The L-743 has a range of 100' (30.5 meters) in radius for measuring the flatness and straightness of transfer line wing bases. This means most transfer lines wing bases can be aligned with one or, at most, two setups. In fact, if the laser is placed in the center of the transfer line it has a range of 200 feet. Another nice feature of the L-743 is the ability to check flatness and straightness at the same time with one setup. And since the laser automatically rotates, multiple targets can be used from the same laser source, which means more than 1 wing base can be aligned at the same time.

Wireless Targets and Readout Speeds Setup


With Hamar's new line of wireless targets (A-1519-2.4ZB and A-1520-2.4ZB) there is no need to string long extension cords to reference targets. The targets have up to a 1" (25 mm) measuring range and can be used up to 100 feet (30.5 meters) from the readout. The R-1355-2.4ZB PDA readout utilizes Read9 color software to display up to five targets simultaneously. Other features like electronic zeroing and target averaging help to speed setup.

The A-1519-2.4ZB has a resolution of 0.00002" (0.0005 mm) and the A-1520-2.4ZB has a resolution of 0.00001" (0.00025 mm).

Continuously Sweeping Lasers and Live Data Reduces Downtime

Continuously sweeping lasers and live data output create a powerful combination to align machining centers up to 70% faster than traditional or interferometer methods. Downed machines will be up and running, producing quality parts in record time. HLI's continuously sweeping lasers are far superior to other point-and-shoot laser systems that require time-consuming manual laser rotation and target setup for each point measured. They also allow the use of multiple targets, which is especially helpful for large machine tools.

By providing live alignment data, misalignment errors can be quickly and easily fixed without having to change the setup. This is a tremendous benefit, especially if you are used to using an interferometer, where the entire length of and axis must be measured before the straightness or flatness can be determined and the data provided is not even live.

Squareness Built Into Laser Head

One of the L-743's greatest features is its built-in squareness (each plane is square to each other with an accuracy of up to 1 arc second - 0.00006"/ft or 0.005 mm/M)). If you have ever tried to set up a cylindrical square or interferometer to check squareness, you will be amazed at how quickly and easily the squareness of not just one axis, but all axes can be measured, usually with one setup! Where an interferometer may take hours just to set up a squareness check, the L-743 takes 15 minutes. And, unlike a cylindrical square, the L-743 can check the entire length of a machine's axis, up to 100 feet (30.5 meters), not just 12" (305 mm) or 24" (610 mm) of it.

Simultaneously Measure 3 Axes with One Setup

Another great time saver is the L-743's ability to measure the three main axes of a machine at the same time. Not only can you measure the flatness and straightness of each axis, but you can also measure the squareness of the three axes and also the parallelism of additional axes, like an extending quill or rotary axis.

L-743 Significantly Reduces Stack Up Errors

The L-743 Ultra-Precision Triple Scan® Laser One of the biggest problems with aligning machine tools using conventional methods is that many different alignment tools must be used, requiring a lot of time and increasing stack-up errors. Another problem is that an alignment is only as good as the tools used to perform it. The machinist level is a good example: it has a resolution of .0005" per foot, not very accurate for today's ever-tightening tolerances.

The L-743's laser planes, by contrast, have a flatness of 1/2 an arc second (0.00003"/ft or 0.0025mm/M) in a 180º sweep and 1/4 arc second (0.00001555"/ft or 0.00125 mm/M) in 90º sweep. The laser planes are square to each other with an accuracy of up to 1 arc second (0.00006"/ft or 0.005 mm/M). They further have the advantage of creating a single reference from which to measure machine geometry, significantly reducing stack-up errors.

Software Quickly Collects and Analyzes DataPlane5 Project Setup Screen

Hamar's new line of alignment software, combined with newly designed computer interfaces, makes collecting and analyzing machining center alignment data faster and easier. All of the software is Windows based and provides large, color graphics. Alignment reports clearly and concisely show the machine's condition. In today's world of ISO 9000 documentation hell, our software will help you submit alignment reports in record time.



L-743 Datasheet
Application Note 1
Aligning Machine Tool with L-743
Application Note 2
Aligning Machine Tool with L-743




  • 3 continuously rotating laser planes with operational range of 100' (30.5 meters) in radius.
  • Laser planes flat to 1/2 arc seconds (0.00003"/ft or 0.0025mm/M) in 180º sweep and 1/4 arc second (0.00001555"/ft or 0.00125 mm/M) in 90º sweep.
  • Planes are mutually square with an accuracy of up to 1 arc second (0.00006"/ft or 0.005mm/M).
  • Includes Pitch/Roll/Yaw base with coarse and fine adjustments.
  • High Accuracy Targets: A-1519-2.4ZB Single-Axis, Wireless Target with 1" (24.5 mm) Measuring Range and .00002" (0.0005 mm) Resolution.
  • Ultra Accuracy Targets: Uses A-1520-2.4ZB Single-Axis Wireless Target with .250" Range and .00002" (0.00025 mm) resolution for higher accuracy applications.
  • Standard illuminated levels accurate to 2 arc second (0.00012"/ft or 0.01 mm/M). High accuracy split-prism upgrade levels accurate to 1 arc second.
  • Instant on with short warm up
  • Typical set-up time 20 minutes or less.
  • Diode lasers 2 times more stable than HeNe based laser systems.
  • Battery or AC powered.
  • Completely self contained.
© 2012 Hamar Laser. Products Covered Under US & Foreign Patents.