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Roll Alignment
Ultra-Fast Setups and Alignment
Highest Accuracy on the Market

Roll Alignment Specialists

We make the best laser alignment systems in the world!

Precision alignment is all we do. For over 50 years, Hamar Laser has been a world leader in laser alignment. We design, manufacture, sell and service high-precision laser alignment and calibration systems for virtually any alignment application.

We know what works…and what doesn’t. We design our lasers to be the best solution for a given application. We don’t believe in “one-size-fits-all” products that a lot of our competitors offer. Buying a Hamar means the job will be done the right way, with unbeatable accuracy and as fast as possible.

75%

Faster than Optics

Our lasers check and align rolls up to 75% faster than optical methods.

10X

Ultra Accurate Measurements

Our lasers are up to 10 times more accurate than competing systems.

50+

Years of Alignment Experience

For roll alignment, we know what works... and what doesn't. Try us and see!

HLI Dual-Scan® Roll Alignment Laser Systems

Specifications L-742 Ultra-Precision L-732 Precision
Laser Plane Flatness .00003 in/ft (0.0025 mm/m) .00012 in/ft (0.010 mm/m)
Squareness b/w Planes .00018 in/ft (0.015 mm/m) .00018 in/ft (0.015 mm/m)
Roll-to-Roll Parallelism Measuring Accuracy .000045 in/ft (0.0038 mm/m) .00018 in/ft (0.015 mm/m)
Penta-Prism Step Error +/- .0001 in. (+/-0.0025 mm) +/- .00025in. (+/-0.006 mm)
Resolution of Measurement .00002 in. (0.0005 mm) .00002 in. (0.0005 mm)
Detector PSD Size 33x13 mm 33x13 mm
Operating Range 100 feet (30 m) in Radius 100 feet(30m) in Radius
Applications Paper Mills, Film Lines,
Printing Presses
Textile Mills & Rubber Mills

Laser Plane Flatness

L-742 Ultra-Precision
.00003 in/ft (0.0025 mm/m)
L-732 Precision
.00012 in/ft (0.010 mm/m)

Squareness b/w Planes

L-742 Ultra-Precision
.00018 in/ft (0.015 mm/m)
L-732 Precision
.00018 in/ft (0.015 mm/m)

Roll-to-Roll Parallelism Measuring Accuracy

L-742 Ultra-Precision
.000045 in/ft (0.0038 mm/m)
L-732 Precision
.00018 in/ft (0.015 mm/m)

Penta Prism Step Error

L-742 Ultra-Precision
+/- .0001 in. (+/-0.0025 mm)
L-732 Precision
+/- .00025in. (+/-0.006 mm)

Resolution of Measurement

L-742 Ultra-Precision
.00002 in. (0.0005 mm)
L-732 Precision
.00002 in. (0.0005 mm)

Detector PSD Size

L-742 Ultra-Precision
33x13 mm
L-732 Precision
33x13 mm

Operating Range

L-742 Ultra-Precision
100 feet (30 m) in Radius
L-732 Precision
100 feet(30m) in Radius

Applications

L-742 Ultra-Precision
Paper Mills, Film Lines,
Printing Presses
L-732 Precision
Textile Mills & Rubber Mills

What Makes Hamar Better?

Hamarlaser Ultra-Accuracy

Ultra-Accuracy

Our laser planes have a flatness accuracy of up to .000015 in/ft. (0.0013 mm/m), flatter than any competing laser, usually by a factor of 8!

High-Speed Alignments

High-Speed Alignments

Renowned for their ease of use and fast setups, our systems significantly speed up alignments with real-time data feedback and simultaneous multi-axis adjustment.

Easy to learn

Easy to Learn

Our lasers are easier to learn than optics or laser trackers and don't require an engineering degree to run them! Training typically only takes 2 days or use our free YouTube training videos!

Alignment Experience

Alignment Experience

More than 5 decades of alignment experience goes into every product, along with our 28 patents! We know laser alignment!

Innovation

Innovation

We design innovative laser systems engineered for specific applications, not inferior and under-performing “one-size-fits-all” products.

Service

Service

Family owned and operated, we make and service our lasers right here in the USA, providing our customers with a high level of personal service.

Laser Technology Comparison

HLI’s L-742 Dual Scan® Technology vs. The Competitor’s Pentaprism

HLI’s Laser Transfer Method

When using HLI’s Laser-Transfer Method and a reference roll, the squareness between the L-742’s laser planes is effectively eliminated when moving the laser from section to section. This means the measuring laser plane is parallel to where it was upon the initial setup to within the combined flatness of the laser planes or .000045 in/ft (0.0038 mm/m)!

  1. 10.0188 mm/m Plane Flatness/Squareness
  2. 20.015 mm/m Plane Squareness
  3. 3(1) - (2) = 0.0038 mm/m Parallelism Error since Squareness Error Does Not Add in!

Competitor’s Pentaprism Method

When using the Pentaprism Method with a reference roll, after the Pentaprism is moved to another location along the machine, the laserbeam at the second location will not be parallel to the laser at the reference roll by up to .0005 in/ft (0.040 mm/m). Not very good for 3-7 meter rolls! Furthermore, rotating the prism to reach and upper or lower roll could result in an additional error of up to .040” (1.0 mm).

  1. 4 0.02 mm/m Beam Squareness/Flatness
  2. 50.02 mm/m Beam Squareness/Flatness
  3. 6(4) + (5) = 0.040 mm/m Parallelism Error Between 2 Beams!
  4. 7Additional Step Error of up to 1.0 mm

Hamar Laser vs. Competitors - Roll Alignment Lasers

Features HLI L-742 HLI L-732 European Systems Optical Theodolites Gyroscope System*
Measurement Technology Dual Scan® Orthogonal
Auto-Rotating Planes
Dual Scan® Orthogonal
Auto-Rotating Planes
Manually Rotating Planes +
Penta-Prism Optical Square
Optical Telescope +
Optical Scale
High-Accuracy
Gyroscopes
Speed of Measurement 60-70% faster 60-70% faster 30-35% faster 0% faster 60-70% faster
Ease of Use Simple, easy setups Simple, easy setups Complicated,
long setups
Complicated,
long setups
Easy to use but,
complicated software
Auto Rotating Laser Planes YES, 2 YES, 2 NO,
Manual rotation
n/a NO
Live Update for Aligning Rolls YES YES YES YES NO. Report only!
Must use another alignment tool to align.
Laser Plane Flatness & Squareness Flatness: .00003 in/ft
(0.0025 mm/m)
Squareness: .00018 in/ft
(0.015 mm/m)
Flatness: .00012 in/ft
(0.010 mm/m)
Squareness: .00018 in/ft
(0.015 mm/m)
Las. Flatness: 0.02mm/m
Las. Sqrness: 0.01 mm/m
Pent. Flatness: 0.02 mm/m
Pent. Sqrness: 0.01 mm/m
Not specied n/a
Roll-to-Roll Parallelism Measuring Accuracy .000045 in/ft
(0.0038 mm/m)
.00018 in/ft
(0.015 mm/m)
.00048 in/ft
(0.040 mm/m)
(Total accuracy: las. + penta)
Not specied Accuracy not specied.
Resolution: 0.008 mm/m
Penta Prism Step Error +/- .0001 in.
(+/-0.0025 mm)
+/- .00025 in.
(+/-0.006 mm)
1.0 mm** n/a n/a
Tripods Required 1 1 2 1 0
Resolution of Measurement 00002 in. (0.0005 mm) .00002 in. (0.0005 mm) .00004 in. (0.001 mm) .0010 in. (0.025 mm) .00005 in/ft
(0.004 mm/m)
Detector PSD Size 33x13 mm 33x13 mm 20x20 mm n/a n/a
Operating Range 100 feet (30 m) in Radius 100 feet (30 m) in Radius Not specied 100 feet (30 m) Not specied
Software Required? NO NO YES NO YES
Manpower Required to Run System 1 optical technician 1 optical technician 2 optical technicians 2 optical technicians 1 service engineer

Measurement Technology

HLI L-742
Dual Scan® Orthogonal
Auto-Rotating Planes
HLI L-732
Dual Scan® Orthogonal
Auto-Rotating Planes
European Systems
Manually Rotating Planes +
Penta-Prism Optical Square
Optical Theodolites
Optical Telescope +
Optical Scale
Gyroscope System*
High-Accuracy
Gyroscopes

Speed of Measurement

HLI L-742
60-70% faster
HLI L-732
60-70% faster
European Systems
30-35% faster
Optical Theodolites
0% faster
Gyroscope System*
60-70% faster

Ease of Use

HLI L-742
Simple, easy setups
HLI L-732
Simple, easy setups
European Systems
Complicated,
long setups
Optical Theodolites
Complicated,
long setups
Gyroscope System*
Easy to use but,
complicated software

Auto Rotating Laser Planes

HLI L-742
YES, 2
HLI L-732
YES, 2
European Systems
NO,
Manual rotation
Optical Theodolites
n/a
Gyroscope System*
NO

Live Update for Aligning Rolls

HLI L-742
YES
HLI L-732
YES
European Systems
YES
Optical Theodolites
YES
Gyroscope System*
NO. Report only!
Must use another alignment tool to align.

Laser Plane Flatness & Squareness

HLI L-742
Flatness: .00003 in/ft
(0.0025 mm/m)
Squareness: .00018 in/ft
(0.015 mm/m)
HLI L-732
Flatness: .00012 in/ft
(0.010 mm/m)
Squareness: .00018 in/ft
(0.015 mm/m)
European Systems
Las. Flatness: 0.02mm/m
Las. Sqrness: 0.01 mm/m
Pent. Flatness: 0.02 mm/m
Pent. Sqrness: 0.01 mm/m
Optical Theodolites
Not specied
Gyroscope System*
n/a

Roll-to-Roll Parallelism Measuring Accuracy

HLI L-742
.000045 in/ft
(0.0038 mm/m)
HLI L-732
.00018 in/ft
(0.015 mm/m)
European Systems
.00048 in/ft
(0.040 mm/m)
(Total accuracy: las. + penta)
Optical Theodolites
Not specied
Gyroscope System*
Accuracy not specied.
Resolution: 0.008 mm/m

Penta Prism Step Error

HLI L-742
+/- .0001 in.
(+/-0.0025 mm)
HLI L-732
+/- .00025 in.
(+/-0.006 mm)
European Systems
1.0 mm**
Optical Theodolites
n/a
Gyroscope System*
n/a

Tripods Required

HLI L-742
1
HLI L-732
1
European Systems
2
Optical Theodolites
1
Gyroscope System*
0

Resolution of Measurement

HLI L-742
00002 in. (0.0005 mm)
HLI L-732
.00002 in. (0.0005 mm)
European Systems
.00004 in. (0.001 mm)
Optical Theodolites
.0010 in. (0.025 mm)
Gyroscope System*
.00005 in/ft
(0.004 mm/m)

Detector PSD Size

HLI L-742
33x13 mm
HLI L-732
33x13 mm
European Systems
20x20 mm
Optical Theodolites
n/a
Gyroscope System*
n/a

Operating Range

HLI L-742
100 feet (30 m) in Radius
HLI L-732
100 feet (30 m) in Radius
European Systems
Not specied
Optical Theodolites
100 feet (30 m)
Gyroscope System*
Not specied

Software Required?

HLI L-742
NO
HLI L-732
NO
European Systems
YES
Optical Theodolites
NO
Gyroscope System*
YES

Manpower Required to Run System

HLI L-742
1 optical technician
HLI L-732
1 optical technician
European Systems
2 optical technicians
Optical Theodolites
2 optical technicians
Gyroscope System*
1 service engineer
* Gyroscopes not available for purchase. Service only. ** European systems do not calibrate Penta Prism centering, a source of large errors.

Articles on Laser Alignment

What Our Customers Say

Christopher G.
Equipment Engineer
Rolls Royce Corporation

"Just a note to let you know, we completed alignment of the Mazak Slant bed lathe shortly after you and Guy finished your visit with us.
Read More...

Jeff F.
Engineer
Roanoke Cement Company

"We have used the system now, and it really is good. We used it on an old (circa 1950) crusher motor (200 hp 550 RPM) with a horrible motor base...
Read More...

CL Cheng
Engineering Manager
Mitsui Copper Foil Malaysia

"We adopted the use of the Hamar Laser Alignment System since 2005 and have not looked back since. It has proven that with its high accuracy and easy to train equipment, Read More...

Charles M
Operations Manager ‐ Alignment Services
Mechanical Dynamics & Analysis, Ltd

"We have been using Hamar laser equipment for about 14 years and have had nothing but great support from your staff all around, Read More...

Questions? Talk to an Alignment Expert Let Us Show You - Free Onsite Demo