How to Choose the Right CNC Screw Machine?

How to Choose the Right CNC Screw Machine? - Evaluate Tooling, Automation, and Total Operating Costs
Machine Type	Typical Part and Bar Capacity	Tooling and Setup Considerations	Automation and Labor	Indicative Throughput	Estimated Machine Investment	Estimated Operating Cost per Machine-Hour	Best Fit
CNC Swiss-type, single spindle	Small, slender precision parts; commonly about 1–32 mm bar diameter, depending on configuration.	Often needs guide bushings, multiple live tools, and part-specific collets. Setup can be more involved when changing part families.	Bar feeder and parts catcher can support long unattended runs; one operator may tend several machines, depending on workload.	Approximately 100–1,500 parts per hour; strongly dependent on part geometry and cycle time.	About $120,000–$350,000, with bar feeder and auxiliary equipment potentially adding $15,000–$50,000.	About $45–$100, including typical labor allocation, power, tooling, and maintenance; excludes material and financing.	Complex, tight-tolerance small parts, especially when machining features on multiple sides in one cycle.
CNC fixed-headstock, single spindle	General turned components; commonly about 3–65 mm bar diameter, depending on machine size.	Uses standard turning tools, collets, and optional live tooling. Tool access and setup are often straightforward for recurring jobs.	Bar feeder and parts catcher are common options. Automation is practical for stable, repeat production.	Approximately 50–600 parts per hour; part size, operations, and cycle time drive output.	About $90,000–$300,000; automation and live-tool options can increase the installed cost.	About $40–$95, including typical labor allocation, power, tooling, and maintenance; excludes material and financing.	Medium-size turned parts, flexible job shops, and work that does not require a sliding headstock.
CNC multi-spindle	High-volume turned components; many machines handle bar stock in roughly the 5–32 mm range, subject to configuration.	Multiple stations require coordinated tool packages and careful setup. Tooling costs and changeover planning are significant.	Several operations run simultaneously. Integrated feeding and part handling can deliver high output with limited operator intervention.	Approximately 300–3,000 parts per hour; depends on the number of spindles, part design, and cycle balance.	About $500,000–$1,500,000 or more, depending on spindle count, options, and automation.	About $60–$130, including typical labor allocation, power, tooling, and maintenance; excludes material and financing.	Stable, high-volume production where throughput can justify higher capital and setup costs.
Cam-driven multi-spindle	High-volume bar-fed parts; typical capacity varies widely, with many applications in the approximate 5–40 mm range.	Mechanical cams and dedicated tooling require skilled setup. Changes between part families can take longer than on CNC equipment.	Automatic feeding supports continuous production. Operator attention is still needed for setup, tool changes, and quality checks.	Approximately 500–5,000 parts per hour on suitable parts; actual output is application-specific.	About $250,000–$800,000, depending on machine condition, capacity, and included equipment.	About $35–$85, including typical labor allocation, power, tooling, and maintenance; excludes material and financing.	Long, repeat production runs of established part designs where fast cycle times outweigh changeover flexibility.
Planning note: All figures are broad, illustrative USD ranges for preliminary comparison, not quotations. Throughput depends on part geometry, material, tolerances, cycle time, and inspection requirements. Operating costs vary by region, shift pattern, labor rates, utilization, and maintenance practice; exclude raw material, facility costs, and financing. Compare total cost per good part across the expected production volume, including tooling, setup time, scrap, automation, and changeovers.