CNC Turning

CNC Turning Services Michigan

JPT provides precision CNC turning services in Michigan for tooling and production parts that have to fit, run true, and hold size. Our Macomb shop runs Okuma 4-axis turning centers with live tooling, so many turned parts come off the machine with milled flats, cross holes, and keyways already complete. We turn prototypes, small batches, and production runs for automotive, diesel engine, aerospace, defense, and industrial customers across Michigan and the Midwest.

Turning is also a core part of how JPT builds its own tools. The same lathes that produce customer parts turn the bodies, shanks, and arbors for our special indexable cutting tools. The people running your job understand concentricity, runout, and fit from the tooling side, where a few tenths decide whether a tool cuts to size.

What We Turn

  • Tooling components: boring bar bodies, shanks, arbors, sleeves, adapters, and cartridge bodies
  • Precision round parts: pins, bushings, spacers, collars, and shafts
  • Tool and die details: punches, die buttons, and guide components turned before grinding
  • Replacement parts: worn or broken components reverse engineered from a sample when no print exists
  • Prototype and low-volume parts: one-off and short-run work for development and specialty defense programs

Materials

We turn alloy and tool steels including A2, D2, M2, H13, and S7, along with aluminum and specialty alloys. Parts that need hardness are turned, heat treated, then finished on our CNC external grinding and internal grinding equipment to final size and surface finish.

Our CNC Turning Equipment

Three machines give JPT turning capacity across a wide range of part sizes and complexity. The Okuma LR25 handles larger work up to 13.4″ in diameter and 33.46″ long, with 3.15″ bar capacity and a 12-station live-tooling turret. The Okuma LU-15M twin-turret machine with C-axis milling suits shorter, feature-rich parts that benefit from turning and milling in a single setup. For the most complex parts, our DMG MORI NT 4250 DCG mill-turn center combines turning with full 5-axis milling, completing parts in one setup that would otherwise take several operations. Okuma specifications are below.

Okuma LR25 CNC turning machine — precision CNC turning services Michigan at Joint Production Technology

Okuma LR25 — 4-Axis CNC Turning Center

Chuck Size 12″
Max. Turning Diameter 13.4″ (340mm)
Max. Turning Length 33.46″ (850mm)
Bar Capacity 3.15″ (80mm) Through Hole
Spindle Speeds 40–3500 RPM
Spindle HP 30 HP / 22 kW
Upper Turret 12 Station with Live Tooling
Lower Turret 10 Station
Tailstock Programmable Quill

 

 

Okuma LU-15M CNC turning center — CNC turning services Michigan at Joint Production Technology

Okuma LU-15M — 4-Axis Twin Turret CNC Turning Center

Swing Over Bed 20.87″ (530mm)
Max. Turning Diameter 13.39″ (340mm)
Max. Turning Length 13.78″ (350mm)
Spindle Bore 2.44″ (62mm)
Spindle Speeds 45–4500 RPM
Spindle Nose JIS A2-6
Upper Turret 12 Station (VDI-40)
Lower Turret 8 Station (VDI-40)
CNC Control Okuma OSP7000L
Live Milling Yes — C-Axis Capable

Applications Across Our Industries

Our CNC turning services support the same industries JPT serves with special tooling: automotive powertrain and chassis programs, heavy equipment and diesel engine manufacturers, aerospace and defense suppliers, and tool and die shops that need turned details on a tight schedule.

Turning, Milling, Grinding, and EDM Under One Roof

Many parts need more than one process. When a part needs more milling than live tooling can handle, it moves to our 5-axis CNC milling centers or the DMG MORI NT 4250 DCG mill-turn. Hardened parts go to grinding, and complex profiles in hardened steel go to wire EDM or sinker EDM. Keeping every step in one Macomb facility means one quote, one schedule, and one point of accountability.

Quality and Inspection

Every turned part is checked to print. Critical diameters, lengths, and runout are verified in process, and first articles and finished parts are measured on our CMM inspection equipment before they ship. JPT operates under an ISO 9001:2015 certified quality management system and is a registered government supplier verifiable through SAM.gov.

Why Manufacturers Choose JPT for CNC Turning

  • Tooling know-how: we build cutting tools, so we understand concentricity and fit from the inside.
  • Prototype to production: the same team and machines handle a single part or a repeat order.
  • Reverse engineering: send a worn sample and we will produce a documented replacement.
  • Michigan based: fast turnaround for Detroit-area and Midwest manufacturers.
  • Since 1971: more than 50 years of precision manufacturing in Macomb County.

For industry standards and best practices in precision machining, visit the Society of Manufacturing Engineers.

Request a Quote for CNC Turning

Send us your print or a sample part, along with quantity and material, and our engineering team will review it and respond with a quote. We accept DWG, STEP, IGES, CREO, and PDF files. Call (586) 786-0080 or contact us online.

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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 Machined Annually
    JPT tooling runs in high-volume production, producing millions of parts every year.

    ISO 9001:2015 Certified & Customer-Audited
    Every process follows our ISO 9001:2015 quality system, and JPT has been approved through on-site audits by aerospace and industrial customers.

    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.

    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.

    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.