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L-743 Ultra-Precision Press Alignment System


The L-743 Ultra-Precision Triple Scan® Laser is the ideal instrument to quickly and accurately calibrate the geometry of almost any kind of press. It 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. The critical alignment of any press is the parallelism of the upper and lower rams to each other and squareness to the way (gib). The ways also need to be parallel. Poor alignment results in poorly formed parts that have to be scrapped and excess wear and tear on the press itself.

L-700 Spindle Laser Ideal for Punch Presses

For punch presses, critical alignment is punch-to-die centering. Every time there is tool changeover, the die and punch need to be aligned for both center and angle. Since punches and dies are changed frequently, quick alignment becomes a necessity. The L-700 Spindle Alignment Laser is a great tool for this alignment.

Ram Parallelism Made Simple with Rotating Laser Planes

Press Alignment ApplicationsSimple to use and easy to set up, the L-743 is the ideal instrument to measure upper-and-lower-ram parallelism. A simple setup procedure positions the laser plane parallel to the fixed ram. Targets are then repositioned to the movable ram and parallelism is easily measured. With Hamar Laser's Plane 5 Software, setup and parallelism measurements are achieved even faster. And once the laser has been set up, if errors are found, they can be fixed immediately without having to change the setup.

Complete Way Squareness Measurements in Two Setups

With the L-743's built-in squareness (each laser plane is square to each other with an accuracy of up to 1 arc second), measuring the perpendicularity of the way (gibs) to the rams is a simple task. In fact, with just two set-ups you can measure all four ways (gibs) for squareness in two axes. And since the data is live, squareness errors can be fixed without changing the setup. Given that the laser has a range of 100 feet (30.5 meters), the entire length of even the largest press can easily be measured for squareness.

Significantly Reduce Downtime when Changing Tools

Changing punches and dies is time consuming and realignment is a necessity. If a ram is out of parallel to the dies, poor part quality and costly premature punch and die wear can occur. Inadequate alignment also results in excess wear on the press itself and can even lead to way (gib) damage. With the high cost of machine overhauls, proper alignment becomes a big cost saver. The L-700 dramatically speeds the alignment process and provides a very accurate alignment.

Continuously Sweeping Lasers and Live Data Reduces Downtime

Continuously sweeping lasers and live data output create a powerful combination to align presses up to 70% faster than traditional 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 inside micrometers or tram bars, where the entire length of and axis must be measured before the straightness or flatness can be determined.

L-743 Significantly Reduces Stack Up Errors

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 (0.000015"/ft or 0.001 mm/M) in 90º sweep. The laser planes are square to each other to within 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.

Squareness Built Into Laser Head

One of the L-743's greatest feature is its built-in squareness. You will be amazed at how quickly and easily the squareness of not just one axis, but multiple axes can be measured, usually with one setup! The L-743 takes just 10 minutes to setup and, unlike a cylindrical or knee square, the L-743 can check the entire length of a machine's travel, up to 100 feet (30.5 meters), not just 12" (305 mm) or 24" (610 mm) of it.

Wireless Targets and Readout Speeds Setup

Wireless Targets and Readout Speeds Setup

With Hamar's 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" measuring range, a resolution as low as 0.00001" (0.00025 mm) and can be used up to 100 feet (30.5 meters) from the readout. The R-1355-2.4ZB. Readout uses a HP PDA, color software and a wireless receiver to display up to 4 targets simultaneously. Other features like electronic zeroing and target averaging help to speed setup and alignment.

Software Quickly Collects and Analyzes Data

Plane 5 Software 3D Plot ScreenHamar'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.





Data Sheet


  • 3 continuously rotating laser planes with operational range of 100 feet (30.5 meters) in radius.
  • Laser planes flat to 1/2 an arc second (0.00003"/ft or 0.0025 mm/M) in 180º sweep and 1/4 arc second (0.000015"/ft or 0.001 mm/M) in 90º sweep.
  • Planes are mutually square with an accuracy of up to1 arc second (0.00006"/ft or 0.005 mm/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 setup 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.