AI Visibility Index: Industrial Gears in California

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

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

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The headline numbers

Never named by AI

122 of 129

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.

7 named at least once
122 never named

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Cell average: 0.43of 15
Across all 129 tracked companies.
Top ten average: 6.7of 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 California

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

Top 10 most AI-visible Industrial Gears companies in California, measured September 30, 2026
Rank	Company	Location	AI visibility
1	American Precision Gear Co 20 employeesFoster City, California 3 name variants American Precision Gear Co.most common7 American Precision Gear Co., Inc.4 American Precision Gear1	Foster City, California	12 of 15 answers
2	Gear Manufacturing Inc 25 employeesAnaheim, California	Anaheim, California	10 of 15 answers
3	Industrial Sprockets & Gears 21 employeesSanta Fe Springs, California 2 name variants Industrial Sprockets & Gears, Inc.most common7 Industrial Sprockets & Gears3	Santa Fe Springs, California	10 of 15 answers
4	Associated Gear 9 employeesSouth El Monte, California	South El Monte, California	9 of 15 answers
5	Gerhardt Gear Co., Inc. 36 employeesBurbank, California 2 name variants Gerhardt Gear Companymost common6 Gerhardt Gear1	Burbank, California	7 of 15 answers
6	Marples Gears California	California	7 of 15 answers
7	Premier Gear & Machining, Inc. 25 employeesCorona, California 4 name variants Premier Gearmost common2 Premier Gear & Manufacturing1 Premier Gear & Machining1 Premier Gear, Inc.1	Corona, California	5 of 15 answers
8	Rubicon Gear California	California	3 of 15 answers
9	Source Engineering Inc 10 employeesSanta Clara, California	Santa Clara, California	2 of 15 answers
10	Anaheim Automation California	California	2 of 15 answers

3 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 California. They belong to that state's ranking, not this one.

Company	State	Mentions
USA Precision Gear	New York	7 of 15
Western Precision Aero (RBC Bearings)	Connecticut	3 of 15
Ascent Precision Gear Corporation	Florida	1 of 15
California Mechanical Gear, Inc. (CMG)	New Jersey	1 of 15
De’Ran Gear, Inc.	Texas	1 of 15
Reliance Gear	Illinois	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 suppliers of industrial gears in California”
2“Who supplies precision ground helical gears in California”
3“I need a California gear manufacturer for a custom low-backlash gearbox project, who should I talk to”
4“Top industrial gears suppliers in California for OEM machinery buyers”
5“Which California gear manufacturers can handle carburized and ground gears to AGMA 10 or better”
6“List 20 industrial gears companies in California 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.

premiergearinc.com
4 companies
amgear.com
3 companies
industrialsprocketsandgears.com
2 companies
gerhardtgear.com
2 companies
gearmfg.com
1 company
anaheimautomation.com
1 company
ascentgear.com
1 company
associatedgearusa.com
1 company
cabevelgear.com
1 company
cmgear.us
1 company
derangear.com
1 company
dynamicsolutionsusa.com
1 company

27 sources were cited across this cell's answers from 22 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

California in context

California ranks 8th of 8 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 14%.

Wisconsin24%
Michigan23%
New York19%
Texas18%
Illinois13%
Pennsylvania11%
Ohio11%
California5%

California (this report)Other measured statesCategory average (14%)

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