AI Visibility Index: Machinery Repair & Rebuilding in California

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

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

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The headline numbers

Never named by AI

178 of 184

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.

6 named at least once
178 never named

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Cell average: 0.11of 15
Across all 184 tracked companies.
Top ten average: 4.4of 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 Machinery Repair & Rebuilding companies in California, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Pamco Machine Works Inc 30 employeesRancho Cucamonga, California 2 name variants PAMCO Machine Worksmost common6 Pamco Machine Works, Inc.1	Rancho Cucamonga, California	7 of 15 answers
2	Kempton Machine Works 12 employeesAnaheim, California 2 name variants Kempton Machine Works Inc.most common3 Kempton Machine Works3	Anaheim, California	6 of 15 answers
3	Matrix Gear Repair California	California	6 of 15 answers
4	CNC Tech Services California	California	4 of 15 answers
5	MTR Service California	California	4 of 15 answers
6	Premier Machine Services California	California	4 of 15 answers
7	Production Equipment Solutions California 2 name variants Production Equipment Solutionsmost common3 Production Equipment Solutions (PES)1	California	4 of 15 answers
8	Mike Dyell Machine Shop 10 employeesRialto, California 2 name variants Mike Dyell Machine Shop, Inc.most common2 Mike Dyell Machine Shop1	Rialto, California	3 of 15 answers
9	D & L Precision Rebuilding California	California	3 of 15 answers
10	Dan’s Machine Tool, Inc. California 2 name variants Dan’s Machine Tool, Inc.most common2 Dan’s Machine Tool1	California	3 of 15 answers

40 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
Allied Mechanical Services LLC	Michigan	9 of 15
Ace Electric Motor & Pump Co.	New York	3 of 15
Dynamic Machine Service	Texas	3 of 15
MASCO (Machine Tool & Supply Co.)	Florida	2 of 15
The ACT Group	Iowa	2 of 15
Cal-Tec (Caltec USA)	Louisiana	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 machinery repair and rebuilding companies in California”
2“Who supplies emergency industrial gearbox repair services in California”
3“I need a California machinery repair and rebuilding partner for a critical production line outage, who should I talk to”
4“Top machinery repair and rebuilding suppliers in California for plant maintenance buyers”
5“Which California machinery repair and rebuilding providers can handle on-site CNC machine diagnostics and overhaul”
6“List 20 machinery repair and rebuilding 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.

tristarcnc.com
4 companies
thomasnet.comDirectory
3 companies
caltecusa.com
3 companies
allgearedup1.com
2 companies
dansmachinetool.com
2 companies
emrickmachinery.com
2 companies
stephensmechanical.com
2 companies
ballscrewguys.com
2 companies
dyellmachine.com
2 companies
groupact.com
2 companies
in-housecnc.com
2 companies
kemptonmachineworksinc.com
2 companies

58 sources were cited across this cell's answers from 51 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 20th of 20 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 11%.

California (this report)Other measured statesCategory average (11%)

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