CNC Internal Grinding

CNC ID Grind Machining Services

JPT provides precision CNC internal grinding services for tight-tolerance bore and hole finishing in Michigan. Our internal grinding capabilities serve automotive, diesel, aerospace, defense, and medical manufacturers requiring exceptional bore geometry and surface finish quality.

Our CNC Internal Grinding Capabilities

JPT operates advanced CNC internal grinding equipment capable of producing precise bore diameters, cylindricity, and surface finish in a wide range of materials including hardened steel, carbide, and cast iron. Our internal grinding services include through-bore grinding, blind bore grinding, and taper bore grinding.

Why Choose JPT for Internal Grinding

With over 50 years of precision grinding experience, JPT delivers bore tolerances and surface finishes that meet the most demanding specifications. Our engineering team works with customers to optimize grinding parameters and ensure consistent results in both prototype and high-volume production environments.

JPT internal grinding services support automotive and diesel transmission components, aerospace hydraulic components, defense system parts, and medical device manufacturing. All ground parts are inspected using our CMM measurement systems to verify dimensional accuracy.

Contact JPT today to discuss your CNC internal grinding requirements.

Okuma GI20 multi-spindle CNC internal grinding machine — CNC internal grinding Michigan at Joint Production Technology“I.D. Grinding” is used when:

  • Multiple diameters, faces and/or forms are to be ground;
  • Concentricity and squareness are required;
  • Blind hole and length applications.

CNC internal grinder is a single-chucking machine that performs multi-diameters and contours for high-volume production or one-offs.

In addition to straight or taper operations, the grinder has eight different grinding patterns that can contour grind with CNC control of the wheel in free combination’s. Users can contour grind deep inside and outside diameter grooves of both faces, straight IDs, ID curves, tapers and faces, as well as OD tapers and faces.

Two diamond tools can be used to obtain the desired wheel configurations under profiling control.

For further reading on precision grinding standards, visit the Society of Manufacturing Engineers.

Contact JPT today to discuss your CNC internal grinding Michigan requirements.

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  • The JPT Difference

    50+ Years Engineering Excellence – in Tooling & Component Manufacturing
    Backed by decades of experience, JPT delivers proven precision tooling solutions engineered for demanding machining applications.

    20+ Countries w/ Active Clients & Installations
    JPT supports manufacturers worldwide, delivering tooling solutions across global production environments.

    Millions of Components & Tools Delivered Annually
    From prototype to high-volume production, JPT tooling is built to perform consistently across large-scale manufacturing runs.

    ISO 9001:2015 Certified & Aerospace-Compliant Facility – Built for Quality, Certified to Perform
    Every process follows ISO 9001:2015 Certified standards, ensuring repeatable quality and precision across critical applications.

    Custom-Engineered Solutions
    Each tool is designed to meet exact specifications, solving complex machining challenges with precision and efficiency.

    Confidentiality & Supporting Solutions – Trusted by Tier 1 suppliers & OEMs
    JPT operates as a trusted partner behind the scenes, supporting Tier 1 suppliers and OEM production lines with proprietary solutions.

    Low-Volume Part Production – Ideal for prototyping, spares, and specialty defense projects
    Flexible production capabilities support everything from prototype development to specialized low-volume applications.

    Application-Specific Engineering & Tool Design – Engineered for your exact part geometry
    Every solution is engineered around your part geometry to optimize accuracy, cycle time, and performance.

    Advanced Tool Life Optimization – More uptime, fewer changeovers.
    Optimized tool design and materials extend tool life, reduce wear, and maximize uptime in production environments.

    Made in the USA – Built with pride, precision, and speed.
    Manufactured in the U.S., JPT tooling combines precision craftsmanship with fast, reliable delivery.

    Custom & Standard – Tailored solutions for your needs, ranging from custom indexable cutting tools to standard designs.
    From fully custom tooling to standard solutions, JPT offers a broad range of options to match your manufacturing needs.

    Fast Turnaround Times – Minimize downtime & maximize productivity.
    Streamlined engineering and manufacturing processes help reduce lead times and keep production moving.

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    The JPT Way

    Most tooling problems aren’t solved by buying off the shelf. They’re solved by understanding the application, the machine, and the process — then engineering the right solution.

    Cutting tools. Fixturing. Complete production solutions. That’s been the JPT way since 1971. No catalogs. No guessing. Just engineering.