EAS500M+ MicroTIR Plus
EAS500M+ MicroTIR Plus
We chose ABTech “because we needed a very accurate method of measuring…”
Andrew E. Dugrenier
Manufacturing Engineering Supervisor
Corning Specialty Materials - Aerospace & Defense and Commercial


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(Max Part Size: 24” dia. x 42” tall, Max Part & Fixture Weight: 500 lbs)

Ultra-precision, Fully Integrated Engine Assembly Systems

Engine Assembly Systems (EAS) provide engine stack projection capabilities for high pressure compressor and turbine (HPCR and HPTR) builds. Also referred to as stack prediction, these system allow operators to quickly and accurately measure individual turbine engine parts and precisely align component stacks the first time, ensuring the least amount of runout.

This process results in lower vibration, less engine wear, a streamlined production process, and improved financial performance. Maintenance and overhaul procedures are also optimized. And the value of your critical engine assets is increased through extended engine life.

Our EAS technology has been deployed worldwide within the aviation, marine transportation, and power generation industries. As precision motion and measurement experts we work closely with you to configure our rotary motion solutions to meet your exact needs, including developing custom solutions for the most unique applications.

The EAS500M+ is designed for applications that include small jet and turboprop engines and rotary wing aircraft. Variations are available to meet other OEM engine models.

Overall system accuracy is under 5.0 millionths of an inch (5.0 µ” or 0.125 micron).

Features & Benefits

Sub-micron Accuracy Air Bearing Rotary Table

The foundation of each Engine Assembly System is an ultra-precision air bearing rotary table that is designed and built by ABTech.

  • Frictionless and maintenance-free rotary table
  • Ultra-precision sub-micron accuracy
  • Nearly absolute repeatability
  • Highly robust stainless steel materials that minimize touchdown and gall damage
  • Requires standard compressed shop air (60 psi)

For maximum durability and stability, and to ensure the highest accuracy and repeatability, each rotary table is mounted to a natural granite base.

Maximum Efficiency and Ease-of-Use

An often overlooked capability with stack prediction systems is ease of use and its production and training efficiency. What separates our system from competitive products is the attention to detail. We listen to our customers to ensure our designs offer the most efficient path to project completion.

Our heavy-duty adjustable tilt and center worktables allow engine part to be easily and precisely aligned to the air bearing’s rotational axis. The tilt and center worktable’s spherical seat design ensures that the part’s center point is maintained when leveling, saving valuable set up time for both measurement and assembly.

To provide quick access when loading parts or unloading a finished assembly, systems can be configured with either a swing-away dual gage stand or a tall counterbalanced gage tower. And to further shorten setup and measurement times, every gage configuration is capable of mounting up to eight electronic indicators connected to a state-of-the-art USB controller.

Configurations to Meet Your Specific Needs

EAS configurations range from portable systems that maximize production floor “on-machine” flexibility to models that can handle load capacities from 500 to 3,000 lbs. Parts sizes can range up to 50” in diameter and 90” tall. See our specifications tab for detailed functionality of each of our models.

EAS units with our MicroTIR+ package include a controller with dual gage head inputs and softawre to capture TIR at angular locations. The controller has inputs, the air bearing table’s rotary encoder, and a large touch screen user interface. EAS MicroTIR+ systems purchased from ABTech are turnkey solutions for assembling jet engines and turbines and come complete with the following:

  • Air bearing platform
  • Controller
  • All required lever and probes
  • MicroTIR+ software preloaded on a Windows based computer
  • A large color touch screen monitor
  • A fixed base floor rack to house the PC and other electronics

MicroTIR+ Control Software & Electronics

Speed Production by Eliminating Rework in Turbine Assembly Process

Looking for a turnkey turbine engine assembly solution? By combining ABTech’s Engine Assembly System (EAS) hardware platform with our MicroTIR+ control software and electronics, manufacturers and maintenance organizations can dramatically reduce build times and eliminate measurement variability between operators.

Minimize Total Runout in Assembly the First Time

The foundation of our system is the air bearing-based hardware platform which ensures the highest level of accuracy and durability. But it’s the software that transforms the platform into an invaluable asset. With its familiar user interface and ease of use and training, our turnkey platforms equipped with our MicroTIR+ software, allow operators of all skill levels to accurately and consistently capture the critical runout measurement on individual turbine engine parts. This results in the ability to properly align component stacks to minimize total runout the first time. By eliminating the painful trial and error assembly process, productivity is dramatically improved.

Improve Profitability from Multiple Sources

The end result is lower vibration, less engine wear, a streamlined production process, and improved financial performance. Maintenance and overhaul procedures are also optimized. And the value of your critical engine assets is increased through extended engine life.

Powerful Features Useable by Operators of All Skill Levels

MicroTIR+ is enterprise friendly Windows-based measurement software for capturing indicator readings at user selectable angular increments. On screen “step-by-step” instructions are available to assist the novice operator through each measurement in a way that doesn’t reduce the efficiency of experienced users. This simplifies the initial training process and simplifies any “refresher” trainings that might be needed.

Coupled with a large touch screen monitor, the user interface with its intuitive navigation allows even the occasional operator to quickly achieve repeatable results. The software easily toggles between a main setup screen with active analog and digital runout meters and the results screen with graphical polar and linear charts. With our one button print feature you can either pre-format a hardcopy of the results in a clean page layout, or export the data in the most common file formats.

And the software provides the critical flexibility to accommodate a range of environments. Display and output options are customizable and users can select scale resolutions and SAE or metric unit options. To facilitate easy part reference on the measurement report and for file storage, custom input fields are also available.

Dual Gage Capability Further Enhances Throughput

To further speed the measurement process, all MicroTIR+ Engine Assembly Systems come standard with dual gage heads so two surfaces can be measured in a single step. Indicator readings – at user specified angular increments – and Total Indicator Reading (TIR) results are output for each surface. Separately view and analyze individual surfaces or overlay the results in one plot for a more complete “picture.” To quickly identify a location on the part, a continuously updated “live” indicator position is displayed on the results plot.

A Boon to Manufacturing and Maintenance Productivity

The benefits stack projection systems can deliver are significant. With our ultra-precision hardware platform and focus on simplified usability, ABTech systems are playing a key role in the introduction of significant new engines including General Electric’s LEAP and the GE9X.

We can tailor a solution to any variation of turbine engine for multiple applications including aviation, power generation, and land and marine transportation. As we have demonstrated in our partnership with GE, we can help you streamline production while increasing the life and value of your key turbine engine asset.


Working envelope:

  • Axial load capacity (max centered and balanced): 500 lbs (226 Kg)
  • Max part diameter (swing): 24” (610 mm)
  • Max part height (OD probe access): 42” (1,067 mm)
  • Height to worktable: 38” (965 mm)


  • Rotary air bearing (Model AT200)
    • 1000 line count rotary encoder assembly
    • Air consumption: 2.0 CFM @ 60 psi
  • Spherical seat type tilt and center worktable assembly (Model HDTC4)
    • 12” (304 mm) diameter worktable
    • Four screw type knobs (2 centering, 2 leveling at 90⁰) for tilt and center adjustments
    • Concentric ″V″ grooves equally spaced for rough centering
    • 1/4-28 tapped holes in worktable for fixture mounting
  • Rotary table anti-rotation kit
  • A dual element air filter/regulator for air bearing supply (Model 00787)
    • 5.0 micron pre-filter w/ regulator (0 – 150 PSI)
    • 0.5 micron second stage filter, oil/water removing (coalescing)
  • Granite surface plate and welded steel base frame
      • 20” x 32” x 6” grade A black natural granite surface
    • Welded steel base with elastomer type passive vibration isolation mounts
  • Inspection style gage stand with:
    • 48” vertical square post with rack-and-pinion drive
    • Two 18” horizontal arms with independent friction drives
    • Drive assembly with 360° swivel and locks to hold post and arm positions
    • Mounted on side of granite surface plate
  • Two lever-type probes with 5M extension cables and fine adjust probe mounts
  • Two calibration gage blocks
  • MicroTIR+ controller box
  • Windows 7 PC with keyboard and mouse
  • 22” wide format flat touch screen color monitor
  • Mobile computer cart with removable casters and monitor mount and keyboard shelf with tilt and swivel adjustments and adjustable heights
  • MicroTIR+ enterprise friendly Windows-based measurement software
    • Measures runout and outputs indicator readings at user defined angular increments
    • Setup screen with analog and DRO displays for checking TIR and part alignment
    • SAE and Metric units (standard and micro)
    • Custom inputs for easy part identification (part #, description, comment fields)
    • Select individual gage head results or overlay both results in one plot
    • Live indicator position displayed on results plot
    • Print displayed results in preformatted page layout
    • Export results to common file formats including pdf, csv, txt
    • On-screen step-by-step probe calibration program routine


  • Gage towers with customized heights and horizontal arm lengths
  • GE’s proprietary Genspect software replaces MicroTIR+ software and electronics and includes:
    • Measures runout, roundness, concentricity and perpendicularity
    • Step-by-step probe calibration program
    • Tilt and center assist feature for easy part alignment
    • WinSPS stack projection module


  • Lever and plunger type electronic gage heads and extension cables
  • Fine adjust probe mounts
  • Magnetic base portable gage stands
  • Additional gage holder fixtures
  • Mobile electronics cart with heavy-duty casters and articulating “swing-arm” monitor mount
  • Certified master artifact

Consult with one of our highly trained representatives to determine the best EAS model and configuration for your specific needs.


  • Aerospace
    • Private and commercial light aviation
    • Defense/military
  • Marine and land transportation
  • Power generation
    • Gas-powered plants
    • Renewable

Similar Products:

    EAS3000-2T P07 Standard Configuration EAS3000-2T
    EAS500 P02 Standard Configuration EAS500
    EAS1000M+ MicroTIR Plus EAS1000M+
    EAS1000CP P05 Standard Configuration EAS1000CP
    Model EAS1000G EAS1000G
    EAS3000 P04 with Optional Probe Bracket EAS3000
    EAS-P P01 Portable EAS-P
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Thank you for your interest in ABTech’s ultra-precision measurement tools and services.
Please tell us a little about what you need to accomplish and we will be in touch to discuss any of the additional details that will help you choose your best option.

Thank you for the great service and turning this around as quickly as your team did. Joseph A. DeAngeloDirector of Technical Development
Oberg Industries
Made in the U.S.A.

Every product we sell exemplifies our company-wide commitment to "Pride in Precision" craftsmanship. To that end, all of our products are designed, manufactured, and tested exclusively by ABTech at our New Hampshire facility.

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