AI Visibility Index: Precision Grinding Services in Illinois

When a buyer asks an AI assistant for a precision grinding services supplier in Illinois, these are the companies that get named. This is what we found when the cell was last measured.

164 companies tracked
Last measured September 30, 2026
Next measurement October 30, 2026

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The headline numbers

Never named by AI

141 of 164

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

23 named at least once
141 never named

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Cell average: 0.38of 15
Across all 164 tracked companies.
Top ten average: 5.5of 15
The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in Illinois

These are the companies AI assistants named most often when Illinois buyers went looking for a supplier in this category.

Top 10 most AI-visible Precision Grinding Services companies in Illinois, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Grind Lap Services, Inc. 27 employeesAddison, Illinois 2 name variants Grind Lap Services, Inc.most common6 Grind Lap Services2	Addison, Illinois	8 of 15 answers
2	Innovative Grinding Corp Illinois	Illinois	8 of 15 answers
3	Spectra-Tech Inc 45 employeesHanover Park, Illinois 3 name variants Spectra‑Tech, Inc.most common6 Spectra-Tech, Inc. (Thomasnet listing)1 Spectra‑Tech Grinding, Inc.1	Hanover Park, Illinois	7 of 15 answers
4	TRU‑GRIND, Inc. Illinois 2 name variants TRU‑GRIND, Inc.most common6 Tru‑Grind1	Illinois	7 of 15 answers
5	American Grinding & Machine Co 89 employeesChicago, Illinois 2 name variants American Grinding & Machine Co.most common3 American Grinding & Machine Company2	Chicago, Illinois	5 of 15 answers
6	Ro-Pal Grinding Inc. 7 employeesRockford, Illinois 2 name variants Ro‑Pal Grinding, Inc.most common4 Ro‑Pal Grinding1	Rockford, Illinois	5 of 15 answers
7	Accu-Grind Manufacturing Co. 11 employeesWauconda, Illinois 2 name variants Accu‑Grind Manufacturing Co., Inc.most common2 Accu‑Grind Manufacturing Company2	Wauconda, Illinois	4 of 15 answers
8	Craftsman Tool & Mold 40 employeesAurora, Illinois 2 name variants Craftsman Tool & Mold Companymost common3 Craftsman Tool & Mold1	Aurora, Illinois	4 of 15 answers
9	Drill Rod & Tool Steels Inc. Illinois 2 name variants Drill Rod & Tool Steels Inc.most common3 Drill Rod & Tool Steels Inc. (DRTS)1	Illinois	4 of 15 answers
10	Grindal Company 20 employeesItasca, Illinois	Itasca, Illinois	3 of 15 answers

27 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not Illinois. They belong to that state's ranking, not this one.

Company	State	Mentions
M&M Quality Grinding	Washington	1 of 15
Tool Steel Service of California – Chicago Division	California	1 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

1“Best precision grinding services companies in Illinois”
2“Who supplies precision surface grinding for hardened tool steel plates in Illinois”
3“I need a Illinois precision grinding partner for a tight-tolerance hydraulic shaft production run, who should I talk to”
4“Top precision grinding services suppliers in Illinois for aerospace machining buyers”
5“Which Illinois precision grinders can hold flatness within 0.0002 inch on large plates”
6“List 20 precision grinding services companies in Illinois with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

thomasnet.comDirectory
3 companies
tru-grind.com
3 companies
accugrindmfg.com
2 companies
americangrinding.com
2 companies
grindlap.com
2 companies
spectra-techgrinding.com
2 companies
craftsmanmold.com
2 companies
drtsinc.com
2 companies
obsidianmfg.com
2 companies
ohareprecision.com
2 companies
ropalgrind.com
2 companies
abrasive-form.com
1 company

45 sources were cited across this cell's answers from 39 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Illinois in context

Illinois ranks 13th of 14 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 17%.

Illinois (this report)Other measured statesCategory average (17%)

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