Line Bars

Design & Manufacture Special JPT Line Bars

Precision Line Boring Bars

At Joint Production Technology, we specialize in crafting custom-built line boring bars engineered for precision and durability. Our line boring solutions are designed to meet the unique demands of your application, ensuring exceptional accuracy, stability, and performance.

Our Capabilities:

  • Custom Design & Manufacturing: Tailored boring bars to fit specific machining requirements, including specialized diameters and lengths.
  • Advanced Materials: High-grade alloys, specialized heat treatments and coatings for extended tool life and superior cutting performance.
  • Precision Engineering: Designed to deliver tight tolerances and consistent results for high-performance machining.
  • Repairs & Refurbishment: Comprehensive repair services to restore boring bars to peak performance, extending tool life and reducing costs.

Why Choose Our Line Boring Bars?

  • Custom Solutions: Each boring bar is built to your specifications, optimizing productivity and reducing downtime.
  • Quality Assurance: Manufactured under ISO 9001:2015 standards, ensuring reliability and repeatability.
  • Expert Support: Our team provides technical expertise to assist with design, implementation, and troubleshooting.

Experience the difference with JPT’s custom line boring bars – where precision meets innovation. Contact us today to discuss your project needs.

JPT Special Line Bars

Engine Crank Linebars for Diesel EnginesSpecial JPT “Thrust Face” Line Bar with Cartridges

JPT Special HSK Line Bar for machining Transmission Cases complete with Adjustable Cartridges

Special JPT Line Bar with Boring Cartridge

JPT CAM Tower “Single Point” Line Bar for Cylinder Head

Special JPT “Cartridge Style” Line Bar for Boring and Grooving
Engine Block

Special JPT Oil Groove Cam Line-Bar

Special Line Bar and Cylinder Boring Tools

Designed & Manufactured by JPT

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Have a new project or tooling challenge? Let’s talk. Our team is ready to help you find the most cost-effective solution for your specific application.

  • JPT Whitepapers


    Learn how cycle time reduction using the JPT Way can help increase profitability in this informative white paper.

  • Why Choose JPT

    50+ Years Engineering Excellence – in Tooling & Component Manufacturing

    20+ Countries w/ Active Clients & Installations

    Millions of Components & Tools Delivered Annually

    ISO 9001:2015 Certified & Aerospace-Compliant Facility – Built for Quality, Certified to Perform

    Custom-Engineered Solutions

    Confidentiality & Supporting Solutions – Trusted by Tier 1 suppliers & OEMs

    Low-Volume Part Production – Ideal for prototyping, spares, and specialty defense projects

    Application-Specific Engineering & Tool Design – Engineered for your exact part geometry

    Advanced Tool Life Optimization – More uptime, fewer changeovers.

    Made in the USA – Built with pride, precision, and speed.

    Custom & Standard – Tailored solutions for your needs, ranging from custom indexable cutting tools to standard designs.

    Fast Turnaround Times – Minimize downtime & maximize productivity.

    Have a new project or tooling challenge? Let’s talk. Our team is ready to help you find the most cost-effective solution for your specific application.

  • What are Best Practices?

    The casual observer may interpret the term “Best Practices” and consider that such a concept is subjectively slanted with many personal points of view. Within the context of the JPT White Paper and Case Study Offerings are experiences drawn from successes as well as failures since our founding in 1971.