Designers & Manufacturers

Special Indexable Cutting Tools Manufacturer Since 1971

Since 1971, Joint Production Technology (JPT) has been a trusted special indexable cutting tools manufacturer serving the automotive, diesel engine, aerospace, military, and medical industries. Located in Macomb, Michigan, JPT designs and produces specialized custom cutting tools — including generating heads, motion tools, and indexable insert tooling — engineered to perform in the most demanding production environments. Whether you need standard catalog tooling or a completely custom solution, JPT delivers precision, reliability, and decades of application expertise. We also specialize in replacing discontinued or obsolete tooling from Valenite Modco, Komet, Master Tool and other legacy suppliers. Explore our full products and services.

Industries Served by Our Special Indexable Cutting Tools

As a special indexable cutting tools manufacturer with over 50 years of experience, JPT engineers tooling solutions across a wide range of demanding industries:

• Automotive — high-volume production of differential cases, cylinder heads, transmission cases, and engine components
• Diesel Engine — tight tolerance tooling for heavy-duty commercial and industrial engine manufacturers
• Aerospace — precision cutting tools meeting the strictest quality and performance standards
• Military & Defense — specialized tooling engineered for defense manufacturing requirements
• Medical — precision machining solutions requiring absolute repeatability in every production run

View the full list of industries we serve or see our complete customer history.

Specialized Cutting Tools — Our Product Range

JPT manufactures a comprehensive range of specialized custom cutting tools engineered for high-volume production environments. Our product line includes:

• Generating Heads and Motion Actuating Tooling — for complex rotational components
• Differential Case and Carrier Tooling — four specialized systems:
  • JPT PASS System — “Drop-in” Style Tooling and Fixturing for “The JPT Way” to manufacture differential cases
  • Full-Sphere Differential Case — Motion Tool & Fixturing for manufacturing full-sphere diff-cases “The JPT Way”
  • Indexable Spherical Seat & Side Gear Cutters — Legacy “Drop-in” Style tooling system
  • Differential Carrier Tooling — Precision tooling systems for high-volume differential carrier machining operations
• Cylinder Head Tooling — precision tooling for automotive and diesel engine cylinder heads
• Transmission Case Tooling — engineered for high-volume transmission manufacturing
• Disc Brake Tooling
  • Disc Brake Caliper Tooling — complete tooling solutions for disc brake component manufacturing
  • Disc Brake Anchor Bracket Tooling — high-performance machining and broaching solutions for anchor bracket production lines
• Engine Block Tooling — JPT precision boring bars, line boring tools, deck milling cutters, and complete engine block machining systems
• Engine Liner Tooling — custom liner boring bars, liner finishing tools, and complete liner machining systems designed to your exact specifications
• Engine Bearing Cap Broach Tooling — JPT produces:
  • Flat Broaches
  • Half Round Broaches
  • Sub-holders
  • Holders
  • Tapered Gibbs
• Steering Knuckle Tooling — specialized tooling for demanding automotive and truck applications, including the JPT Steering Knuckle Taper Bore Motion Tool — which eliminates tapered reamers and controls hole sizes through part-to-tool contact — and the JPT Micron Adjustable Boring Tool for precision spindle bore machining
• Axle Tooling and Anchor Bracket Tooling — high-performance machining and broaching solutions for axle and bracket production lines

Why Choose JPT as Your Cutting Tools Manufacturer

JPT is not a catalog tooling company. Every solution we produce is engineered specifically for your application, your machine, and your production goals. Our engineering team works directly with customers to design specialized custom cutting tools that reduce cycle times, extend tool life, and improve part quality. From initial design through final delivery, JPT provides the engineering support and responsive service that high-volume manufacturers depend on. We are an indexable cutting tools USA manufacturer committed to keeping American production lines running at peak performance. See who we work with on our customers page.

Engineering Support You Can Count On

What sets JPT apart from other cutting tools manufacturers is our engineering-first approach. Every customer engagement starts with a thorough review of your application requirements, machine specifications, and production goals. Our experienced cutting tool design and engineering team then designs a tooling solution optimized for your specific needs — not an off-the-shelf compromise. JPT supports customers through the full product lifecycle, from initial design and prototyping through production runs and ongoing technical support. When your production line needs to run at peak efficiency, you need a cutting tools manufacturer with the engineering depth and manufacturing capability to back it up. That is what JPT has delivered to automotive, diesel engine, aerospace, military, and medical manufacturers for over 50 years.

Request a Quote from JPT

Ready to improve your production efficiency with specialized custom cutting tools engineered specifically for your application? Contact the JPT engineering team today to discuss your requirements. Whether you need a single custom tool or a complete tooling solution for a new production line, JPT has the expertise and manufacturing capability to deliver. Our customers span the automotive, diesel engine, aerospace, military, and medical industries — and they depend on JPT for precision, reliability, and responsive engineering support.