ParAlign Roll Alignment Services from the innovators of inertial alignment.

ParAlign is a unique, non-optical measurement method using inertial technology designed to measure the parallelism of rolls in production installations in the paper, print, converting, steel industries, and web-handling/roll to roll transfer processes.

Misalignment in rolling machinery can lead to wasted material, inconsistent or low-quality products, and excess machine wear. Properly aligned rolls perform better, create more consistent products, and reduce wear and tear on machinery.

Three-ring laser gyroscopes enable the ParAlign to take measurements in three-dimensional space (roll, pitch, and yaw). No line of sight is required, which creates consistent, reproducible results.

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Years of experience
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Plants worldwide have already used ParAlign
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Rolls measured with ParAlign

Why choose a ParAlign Service?

FAST

Fastest measurement method available—measures up to 100 rolls per day

COMPREHENSIVE

Can align rolls and surrounding structures, even in hard-to-reach areas

ACCURATE

Resolution: 4 μm/m (0.05mils/ft)

EFFICIENT

Improves product quality and reduces waste

VISIONARY

No line of sight required

FOUNDATIONAL

No baseline required

How can we help you?

Please send us your inquiry and our experts will get back to you shortly

Request a quote

Please complete our service questionnaire

Training

We offer alignment, vibration & balancing, ultrasound, and reliability training.

Types of Services

The Pruftechnik Services team offers two types of roll alignment utilizing the ParAlign gyroscopic technology:
the ParAlign Service and the Peak RGA Service.

The ParAlign Service is performed with the ParAlign alone. When performing the service, the device is placed on a roll and swept a minimum of 20 degrees about the roll’s circumference. The ParAlign can be positioned anywhere along the circumference of the roll as long as there is enough clearance to complete a proper measurement using the SWEEP method. This flexibility allows for rolls to be measured on the top, bottom, or sides, depending on which is most accessible.The measurement takes about 30 seconds, and results are instantly transmitted wirelessly to a laptop.

The Peak Roll and Geometrical Alignment (RGA) Service is a total alignment solution combining the ParAlign with laser trackers to align rolls and their surrounding structures in the shortest time possible—while producing accurate results and instant visual reports. No other roll alignment method combines gyroscopic and laser tracker technology.

Frequently Asked Questions

Geometric measure theory (GMT) studies the geometric properties of sets through what mathematicians call measure theory. GMT lets mathematicians expand the tools provided by differential geometry to cover a much larger class of surfaces, including inclination, straightness, level, and flatness.

Geometric tools measure surface flatness, foundation levelness, straightness and parallelism, machine geometrics, and shaft plumbness.

Geometric measurement technology covers many tools, from simple straightness to complex right-angle measurements needed when moving machinery or installing large machines like turbines or rolls.

Today’s more sophisticated geometric measurement systems use laser technology, enabling faster and more efficient measurements of flatness of surfaces, level, and perpendicularity. Precision laser shaft alignment tools produce a flat plane of laser light that can be maneuvered to fit multiple needs and used to test equipment and machines as a point of reference.

In addition to geometric laser alignment tools,

Geometric tools, such as laser shaft alignment systems, allow users to take critical measurements, including machine geometrics, shaft plumbness, surface flatness, foundation levelness, straightness, and parallelism

Early geometric tools included simple things like a straightedge, compass, divider, and set-square. More recently, modern geometric measurement tools have grown to include sensors, laser alignment tools, and inclinometers or clinometers.

A clinometer lets users accurately measure angular deviation on flat surfaces and shafts and along edges, borders, and vertical shafts.

Level and flat are sometimes thought to be the same thing, but they are not. Flatness is associated with the topography, smoothness, or curving of a machine or surface. At the same time, level describes how a surface, device, or machinery system is situated in relationship to the earth’s gravity.

Flatness and level are essential to shaft alignment because when a machine is not flat or level, it can cause shaft misalignment. For instance, the base on which a new device is placed might not be flat, or the actual machine bottom could contain a burr. If the machine isn’t level when installed, it can cause

Many different tools are used to take geometric measurements, from simple tools, such as a straightedge or square, to more sophisticated tools, such as precision laser shaft alignment tools.

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What our clients say?

“The difference in the calendered part quality was noticeable immediately upon production startup after their work was complete, and the return on investment has already paid for itself in saving waste material…. The speed and precision of their service is second to none.”
Cody Ozanich, Senior Mechanical Engineer

Interested?

Find out more…

PARALIGN increases machine availability and product quality

Press Section

  • Prolong lifetime of wires, felts, and roll covers
  • Decrease folds and creases
  • Ensure uniform moisture profile

Press Section

  • Prolong lifetime of fabrics and roll covers
  • Decrease folds
  • Ensure uniform thickness profile

Press Section

  • Prolong lifetime of bearings and rolls
  • Decrease paper folds and breaks
  • Reduce waste
  • Ensure uniform winding

PARALIGN helps prevent web folds, creases, and the so-called “long sides”

Blow Film Extrusion Line

  • Prevent and reduce ‘long sides’, or the asymmetric winding of the web
  • Ensure uniform thickness profile
  • Decrease folds, creases and web breaks
  • Increase product quality
  • Reduce waste

Roll parallelism: Our tolerance values are based on 15 years of experience

PARALIGN increases machine availability and product quality

Printing Press

  • Reduce maculature, spoilage, and waste
  • Decrease web folds and breaks
  • Short setup times when the product is changed
  • Correct passers and gauge pins

PARALIGN can even measure rolls over long distances and rolls that are difficult to access

Tandem rolling mill

  • Prevent asymmetrical thickness profile
  • Decrease web movement due to improved position of the support rolls
  • Ensure uniform surface density

  • Prevent strip misalignment
  • Reduce downtime due to strip failure

Roll alignment check in a printing factory: Watch the video

What our clients say?

“During the realignment of a large gravure printing press, the entire machine was measured with PARALIGN by PRUFTECHNIK and corrections made on the basis of the offset detected. Then the machine was measured again to confirm good alignment. With the help of PARALIGN, misalignment was detected in the shortest time and corrected accordingly. The machine optimization phase has been significantly reduced with PARALIGN.”
Ulrich Hänsel, ROTODECOR Technical Sales Manager
“PARALIGN is very fast and easier to use than optical measuring devices. Four times more cylinders can be measured with PARALIGN than using traditional optical measuring devices. In addition to the swiftness, a clear advantage is that measuring can be done when other optical measuring devices fail due to obstacles in the line of sight.”
Roope Siilasto, VTT Technical Research Centre of Finland Ltd