Precision CNC Turning Services — 0.025mm Tolerance

When cylindrical, threaded, or complex round components must perform without variation, Criterion Precision Machining delivers precision CNC turning services built for regulated, mission-critical programs. From prototype runs to low- and mid-volume production, our live-tooling turning centers, certified quality systems, and experienced team help engineers reduce setup risk, protect traceability, and achieve repeatable tight-tolerance results.

Precision CNC turning machine producing a metal component

Our CNC Turning Services

Tight-tolerance turning, Swiss machining, inspection, finishing, and production support for mission-critical components.

CNC Turning

High-precision CNC turning for cylindrical and complex-geometry parts, including micro- to medium-sized components requiring smooth finishes, tight tolerances, and dependable repeatability for regulated industries.

Swiss Turning

Multi-axis Swiss turning for small-diameter components, deep cuts, fine micro-features, and high-repeatability production in medical device, aerospace, defense, and photonics applications.

Live Tooling

Live-tooling turning centers complete milling, drilling, and secondary features in one setup, reducing cycle time, vendor handoffs, and tolerance stack-up on complex turned parts.

Production Prototyping

Production-intent prototypes are machined on production equipment and inspected with the same metrology systems, helping qualified parts transition smoothly into higher-volume production.

Quality Inspection

Integrated quality assurance includes incoming verification, FAIRs, in-process checks, final inspection, CMM measurement, optical inspection, and traceability documentation for mission-critical programs.

Secondary Operations

In-house deburring, vibratory finishing, laser marking, serialization, and light assembly help complete turned parts under one quality system with stronger chain-of-custody control.

Machinist inspecting a precision CNC turned component

Our Precision Turning Process

Review Drawings and Critical Requirements

Our estimating and engineering team reviews drawings, GD&T, tolerances, materials, quantities, and documentation requirements to confirm CNC turning fit, manufacturability risks, inspection needs, and whether Swiss turning or live tooling may improve results.

Plan the Turning Process

Machine With Controlled Repeatability

Inspect and Document Results

Finish, Mark, and Ship

The Criterion Difference

Why Choose Criterion Precision Machining?

Criterion combines advanced turning technology, certified quality systems, and decades of precision machining experience.

Tight Tolerances

CNC turning and Swiss machining achieve tolerances down to ±0.0002" for critical components.

Certified Quality

ISO 13485 and ISO 9001 certifications support regulated medical, aerospace, and defense programs.

In-House Inspection

CMM, OASIS, and Keyence inspection systems verify dimensions, features, and repeatability in-house.

Proven Legacy

Founded in 1953, Criterion brings third-generation ownership and deep machining discipline to every program.

Meet The Criterion Team

Meet the people behind mission-critical precision machining.

Professional headshot of Tanya DiSalvo, President

Tanya DiSalvo

President

As third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads our commitment to delivering mission-critical components for Texas railroad infrastructure. Under her leadership, Criterion has evolved into a woman-owned precision machining company specializing in the 'No Failure' sectors, including railroad safety systems. Tanya's vision has guided the company's investment in advanced CNC technology and ISO certification programs, ensuring our Texas railroad clients receive components that meet the most stringent safety and performance standards. Her dedication to quality excellence and operational efficiency has positioned Criterion as a trusted partner for railroad manufacturers requiring precision components that perform reliably across Texas's diverse operating environments, from Gulf Coast humidity to West Texas desert conditions.

Professional headshot of Kelly Marflak, Quality Manager

Kelly Marflak

Quality Manager

Kelly Marflak serves as Quality Manager at Criterion Precision Machining, overseeing our comprehensive quality assurance programs critical to railroad component manufacturing. With deep expertise in precision inspection protocols, Kelly manages our certified Quality Assurance program that includes multiple points of precision inspection built into manufacturing processes. She oversees the operation of our Global Advantage CMM with PC-DMIS software, OASIS Optical Automatic Smart Inspection System, and Keyence measuring systems capable of measuring up to 99 dimensions simultaneously. Kelly's meticulous attention to detail ensures every railroad component meets the exacting tolerances and safety standards required for Texas railroad applications. Her leadership in quality control processes has been instrumental in maintaining our ISO 13485 and ISO 9001 certifications, providing railroad manufacturers with the documentation and compliance verification essential for safety-critical components operating across Texas's extensive rail network.

Professional headshot of Mike Pinchot, Estimator/Project Manager

Mike Pinchot

Estimator/Project Manager

Mike Pinchot brings extensive project management expertise to Criterion's railroad machining operations as Estimator and Project Manager. With deep understanding of precision manufacturing requirements, Mike works closely with Texas railroad clients to develop accurate project estimates and manage complex machining programs from concept through delivery. His technical expertise enables him to assess challenging railroad component specifications and coordinate multi-axis machining operations, Swiss turning processes, and quality inspection requirements. Mike's project management approach ensures railroad components are delivered on time and within budget while meeting the stringent quality standards required for safety-critical applications. His collaborative work with engineering teams and manufacturing personnel has streamlined processes for producing complex railroad parts, from prototype development through full production runs, ensuring Texas railroad infrastructure receives components manufactured to the highest precision standards.

Professional headshot of David Glass, Chief Financial Officer

David Glass

Chief Financial Officer

David Glass serves as Chief Financial Officer at Criterion Precision Machining, bringing strategic financial leadership to support our continued growth and investment in advanced manufacturing capabilities. With his comprehensive understanding of manufacturing economics and operational efficiency, David ensures that our precision machining operations remain competitive while maintaining the highest quality standards. His financial expertise enables Criterion to make strategic investments in cutting-edge CNC equipment, quality systems, and workforce development that directly benefit our clients in mission-critical industries. David's analytical approach to business management helps optimize our manufacturing processes and resource allocation, ensuring we can deliver exceptional value to customers while maintaining the financial stability necessary for long-term partnerships. His commitment to operational excellence supports our ability to serve the demanding requirements of medical device, aerospace, defense, and photonics manufacturers who rely on our precision machining capabilities.

Kellyanne Gottschalk, Internal Systems Manager at Criterion Precision Machining

Kellyanne Gottschalk

Internal Systems Manager

Kellyanne Gottschalk serves as Internal Systems Manager at Criterion Precision Machining, responsible for managing and optimizing the company's operational and business systems, including the ProShop ERP platform. Her role is critical in ensuring seamless workflow from order intake to final delivery, enabling real-time visibility into production scheduling, quality documentation, and compliance tracking. Kellyanne's expertise in systems management supports Criterion's ability to scale efficiently while maintaining the rigorous documentation and traceability standards required by regulated industries such as medical devices and aerospace. Her work underpins the company's operational excellence and helps ensure every project is delivered on time and in full compliance.

Nilda Feliciano, Customer Service representative at Criterion Precision Machining

Nilda Feliciano

Customer Service

Nilda Feliciano is the Customer Service representative at Criterion Precision Machining, serving as a dedicated point of contact for clients throughout the entire order lifecycle. From initial inquiries to order updates and delivery coordination, Nilda ensures that every client receives responsive, clear, and professional communication. Her commitment to customer satisfaction reflects Criterion's values of reliability and partnership, particularly important for clients in time-sensitive industries like aerospace, defense, and medical devices. Nilda's friendly and knowledgeable approach helps build lasting relationships with customers, ensuring they feel supported and informed at every stage of their project with Criterion.

Bonnie Paletta, Office Administrator at Criterion Precision Machining

Bonnie Paletta

Office Administrator

Bonnie Paletta serves as Office Administrator at Criterion Precision Machining, keeping the day-to-day operations of the business running smoothly. Her organizational skills and attention to detail ensure that administrative processes, documentation, and internal coordination are handled efficiently, freeing up the production and quality teams to focus on delivering precision components. Bonnie is a vital part of the Criterion team, contributing to the company's culture of professionalism and reliability. Her support role touches every department, helping to maintain the high standards of communication and organization that Criterion's clients in medical device, aerospace, and defense industries depend on.

Frequently Asked Questions

What tolerances can you hold for CNC turning?

Criterion Precision Machining produces CNC-turned components with tolerances down to ±0.0002" where the geometry, material, inspection method, and production process support that requirement. Our team reviews drawings, critical features, datum structures, and material behavior before quoting, then verifies parts using CMM, optical, and image-dimension inspection systems.

What materials can you machine with CNC turning?

Do you handle prototypes as well as production runs?

What is the difference between CNC turning and Swiss turning?

Can you machine complex turned parts with live tooling?

How do you inspect precision turned components?

Do you provide inspection reports and traceability documentation?

Which industries do your CNC turning services support?

Need Help Evaluating a Turned Part?

Send your print and speak with our precision machining team.

Certified & Trusted

Awards and Recognition

ISO 13485 certification badge

ISO 13485

Medical device quality management certification.

ISO 9001 certification badge

ISO 9001

Certified quality system for consistent production.

WBENC certification badge

WBENC Member

Recognized woman-owned business certification.

Ready to Quote Your CNC Turning Project?

Share your drawings, tolerances, materials, quantities, and documentation requirements. Our team will review fit, manufacturability, and next steps.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 216-267-1733. You can also send us a quick email at office@criteriontool.com.