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353 Railroad Avenue Hackensack, NJ 07601, USA

Roll Alignment

ROLL Alignment Service
3D Roll Alignment

Web Handling Roll Alignment refers to the precise positioning of a web of material as it moves through web handling system, such as a printing press, laminating machine or converting line.  This is achieved by aligning the rolls of the machine so they are parallel, level and square to each other and perpendicular to the web path.

Our field service service engineers utilize state-of-the-art laser equipment enabling us to to perform these services faster with higher accuracy and greater precision.

From installation to overhaul and maintenance, our machine train alignment service solutions can out-perform traditional methods saving valuable outage time and resources.

A detailed graphical measurement report is supplied with all precision measurement services.

Our commitment to excellence paired with our state-of-the-art measurement capabilities makes Rotatek your trusted precision service partner.

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WEB HANDLING ROLL Alignment and Measurement Solutions

Proper roll alignment is critical for maintaining consistent quality and avoiding production problems. 

Unlike traditional alignment methods using a straight edges, or dial indictors, Rotatek field engineers utilize state-of-the-art 3D laser trackers for unparalleled accuracy, precision and measurement acquisition time.

Web handling roll alignment is a complex process that requires careful planning, attention to detail and highly skilled operators in order to achieve accurate, reliable results in a timely and efficient manner.

Roll Alignment
3D Measurements

Laser trackers operate by measuring two angles and a distance. The tracker sends a laser beam to a retroreflective target held against the object being measured. As light is reflected off the target, it bounced back and re-enters the tracker at the same position it left and is measured by a distance meter, measuring the distance between the tracker and target.

Distance Measurement

The tracker sends a laser beam to a retroreflective target held against the object to be measured. The reflectedbeam returns to the tracker and its precise distance is recorded.

3D Measurement

Two angle encoders measure the elevation and rotational angles while a highly accurate absolute distance meter is used to determine the 3D position of the target. This position is shown in the software as an X, Y, Z value.


The target returns the reflected laser beam parallel but offset back to the tracker where it hits the position detector, which calculates the offset between the outgoing and incoming beam. Servo motors continuously (thousands of times per second) steer the tracker’s head to minimize the offset between the two beams, resulting in high-speed, dynamic measurements.