
Precision Machining Solutions for Complex, Close-Tolerance Applications
Lonero Engineering is your single-source specialized machine shop — the skill and precision to design, engineer, and manufacture difficult parts, for over 70 years.
A Single Source for Difficult Parts
Lonero Engineering is your single-source specialized machine shop, providing the skill and precision to develop and manufacture complex parts. We offer precision machining services with the capability to design and engineer products from scratch — from first sketch to finished, inspected component.
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Six Disciplines. One Source.
From raw stock to inspected, finished part — every capability under one roof in Troy, Michigan.

Turning
Versatile turning solutions specializing in complex, close-tolerance applications using mill-turning, live tooling, and swiss turning capabilities.
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Milling
An advanced milling department delivering efficient custom machining solutions for a diverse range of difficult-to-manufacture applications.
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Grinding
Precision ID, OD, Jig, centerless DedTru, and surface grinding operations for complex geometries requiring the tightest of tolerances.
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Laser Etching
Advanced laser etching equipment to custom engrave parts and tooling with unique serial numbers, barcodes, graphics, logos, and branding.
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Inspection
Every custom-machined part is meticulously inspected for dimensional accuracy that meets or exceeds close-tolerance requirements.
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Deep Rolling
For over 30 years, the industry leader in crankshaft deep fillet rolling tooling applications, including our patented Twist Tool.
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Our global headquarters handles sales, design, engineering, and manufacturing from an 18,000 sq. ft. facility in Troy, Michigan. Regional support offices in Mexico, Brazil, Japan, China, South Korea, and Hong Kong keep us close to customers across North America, Europe, Asia, and Africa.
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