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Precision Machining Solutions for Complex, Close-Tolerance Applications

Since 1951, Lonero Engineering has provided the skill, craftsmanship and precision to produce difficult-to-machine parts for cutting-edge machining applications.

Lonero Engineering is an ISO 9001:2015 Certified American manufacturer specializing in complex machining applications. We offer versatile CNC milling, turning, Swiss machining, and metal grinding services for precision products, accommodating tight tolerances down to 5 microns.

From custom prototype development to high-volume production runs, Lonero offers the ingenuity and expertise to manufacture difficult-to-manufacture parts through innovative CNC machining solutions.




  • CNC Turning and Mill Turning 
  • CNC 5-Axis Mill Turning 
  • CNC Hard Turning
  • Swiss Turning / Machining
  • Manual Lathe Turning


  • 3-Axis Vertical Milling
  • 3-Axis Horizontal Milling
  • Manual Milling Capabilities
  • Low-volume and high-volume milling projects


  • CNC & Manual O.D. / I.D. Grinding
  • CNC & Manual Surface Grinding
  • CNC Centerless DedTru Grinding
  • Jig Grinding
  • Honing, Polishing, & Media Tumbling


  • Patented Twist Tooling
  • Consulting/Tool Design
  • Tool Manufacturing
  • Perishable Tooling
  • Training
  • Tool Re-building/Refurbishment

Precision-Machined Quality and Consistency

Lonero Engineering is an ISO 9001:2015 Certified machine shop specializing in the development of innovative CNC manufacturing solutions. Founded in 1951, our state-of-the-art production facility is located in Troy, Michigan. We strive to offer the unbeatable quality, efficiency, and close-tolerance consistency that your precision machining project demands.

If you’ve got a complex, close-tolerance machining project,
contact Lonero today at 248-689-9120.

We have more than 70 years of proven experience
and expertise providing quality precision machining solutions.