OSP Multi-spindle screw machines

High-Volume Multi-Spindle Screw Machining (Up to 2" Capacity)

A Fleet Built for Speed: 6-Spindle & 8-Spindle Technology

At Ohio Screw Products, we understand that scaling production is one of the most critical challenges in manufacturing. Finding a partner with the capacity to handle high-volume runs—without sacrificing precision—is difficult. Finding one that can do it for turned parts up to 2 inches in diameter is even harder.

We are that partner.

Our facility is engineered to be a productive and effective solution for a wide range of turned parts. While many shops max out at smaller diameters or limited run sizes, Ohio Screw Products leverages a massive fleet of 30 specialized screw machines to deliver speed, accuracy, and cost-efficiency. Whether you need 5,000 complex fittings or 500,000 automotive fasteners, our station-by-station layout and innovative tooling geometry ensure your parts are produced at the lowest possible cost per unit.

Unmatched Capacity: High-Volume Manufacturing

Capacity is more than just floor space; it is about having the right machine for the specific geometry and volume of your part. Our diverse equipment list allows us to route your project to the machine that offers the most efficient cycle time.

The Workhorses: ACME Gridley 6 & 8 Spindle Machines

The backbone of our high-volume production is our fleet of 20 ACME Gridley multi-spindles.

  • Diameter Capacity: 5/8” to 2”.

  • Why It Matters: These machines are the industry standard for rugged, high-speed material removal. With 6 or 8 spindles working simultaneously, we can perform heavy roughing, drilling, and forming operations in a fraction of the time required by single-spindle CNCs.

  • The “Hard to Find” Capability: While many screw machine shops exist, machines capable of running larger parts (up to 2 inches) are increasingly hard to find. We have maintained and optimized this capacity to serve customers with larger component needs.

The Precision Specialists: Euroturn 6 & 8 Spindle Machines

For parts requiring tighter tolerances or higher spindle speeds, we deploy our 32mm Euroturn machines.

  • Diameter Capacity: Up to 32mm (approx. 1.25”).

  • The Advantage: These machines combine the speed of cam-driven production with modern precision, making them ideal for complex, smaller-diameter components that require a pristine surface finish.

The Agile Support: Brown & Sharpe Single Spindle Machines

Not every job requires a multi-spindle setup. For medium-volume runs or simpler geometries, our single-spindle machines provide agility.

  • Diameter Capacity: Up to 1-5/8”.

  • Application: These machines are perfect for pins, bushings, and spacers where quick changeovers and lower setup costs are the priority.

Multi-Spindel Machining Overview

  • Capacity: Up to 2.00″ Diameter

  • Fleet Size: 30 Screw Machines

  • Specialty: High-Volume Copper & Steel

  • Certifications: ISO 9001:2015,  ITAR registration

  • Max Spindles: 8-Spindle Configs Available

  • Complexity: 12 Tools Per Cycle

  • Features: Cross-Drilling, Threading, Broaching

  • Tolerances: Precision Ground to ±.0005″

  • Materials: Copper, Brass, Alloy Steel, Stainless

  • Massive Throughput: 5,000 to 500,000+ Runs

  • Cost Efficiency: “Done in One” Processing

  • Material Experts: We machine “gummy” copper

  • Versatility: 5/8″ to 2″ Bar Stock Capacity

  • Support: In-House Engineering Review

The "One Index" Advantage: 12 Tools Working Simultaneously

The secret to our productivity lies in our ability to eliminate secondary operations. In traditional machining, a part might need to be turned on a lathe, then moved to a mill for flats, and then to a drill press for cross-holes. This adds handling time, cost, and potential for error.

At Ohio Screw Products, we utilize a full complement of attachments to produce these features all in one index of the machine.

Our multi-spindle machines can engage as many as 12 tools working simultaneously during each cycle. This allows us to complete complex features in-process, including:

  • OD Flats & Milling: Creating wrench flats or specialized profiles on the Outside Diameter.

  • Inboard Hex Shapes: Generating internal hex features for fasteners.

  • Cross-Holes: Drilling perpendicular to the main axis without removing the part.

  • Threading: Internal and external thread rolling or cutting.

By consolidating these operations, we drastically reduce cycle times. Innovation in our tooling geometry and station-by-station layout allows us to tackle parts that other shops might deem “impossible” for a screw machine.

Material Expertise: The "Copper" Specialty

Machining capacity means nothing if you cannot hold tolerances on difficult materials. A wide variety of materials can be machined in our process, including carbon steels, alloy steels, stainless steels, plastics, and brass.

However, our true differentiator is Copper. Copper is one of the specialties here at Ohio Screw Products. Known for being “gummy” and tough to machine without burrs or deformation, copper requires rigid machine setups and specific tooling expertise. Our engineers have honed the process to run copper components at high volume while maintaining excellent surface quality and dimensional accuracy.

Technical Specifications at a Glance

For engineers and buyers needing quick data, here is the breakdown of our facility’s capabilities.

Machine Type Quantity Spindles Size Range Best For
ACME Gridley 20 6 & 8 5/8" – 2" High Volume, Large Dia, Heavy Removal
Euroturn (ZPS) 5 6 & 8 Up to 32mm High Speed, Precision, Complex Geometries
Brown & Sharpe 5 1 Up to 1-5/8" Medium Volume, Simple Parts, Quick Turn

Engineering That Fits Your Needs

We don’t just take prints; we offer solutions. Our engineers are well-versed in these specific machines and processes. When you submit a request, we can quickly assess whether your part is a good fit for our multi-spindle environment or if it requires a different approach.

If you have a part designed with OD flats, cross-holes, or demanding threads, let us review it. We often find that parts currently being made on slower CNC lathes can be migrated to our multi-spindle machines for significant cost savings.

Ready to Scale?

Don’t let capacity constraints throttle your growth. Trust the experts with the fleet to back it up.

Contact Ohio Screw Products today to discuss your high-volume machining needs.