At Buell Automatics, we’ve been crafting screw-machined components for heavy-duty vehicles since 1966 and while the manufacturing world has evolved, one thing remains unchanged: Davenport screw machines still dominate high-volume production. These mechanical workhorses, some built as far back as the 1930s, continue to outperform newer technologies when it comes to churning out brass bushings, steel inserts and fasteners by the thousands.

In a time where CNC machining grabs headlines, Davenport machines silently power industries that demand speed, consistency and cost-efficiency. Here’s why they remain irreplaceable for heavy-duty applications.

Multi-Spindle Machining Speed

Davenport screw machines operate on a simple but brilliant principle: five spindles working in unison. Unlike single-spindle lathes, which perform one operation at a time, a Davenport completes multiple steps simultaneously (turning, drilling, tapping and threading) all in a single rotation. This parallel processing slashes cycle times to as little as one second per part.

For heavy-duty vehicle components, where orders often stretch into the hundreds of thousands, this efficiency is a game-changer. A single Davenport can produce thousands of parts per day, making it the go-to for bushings, hydraulic fittings and fasteners that keep trucks, tractors and industrial equipment running.

Cost-Effectiveness That CNC Can’t Match

While CNC machines excel at intricate, low-volume work, Davenports thrive in high-volume production where every cent counts. Once set up a process that can take 22 hours on average, these machines run for months or even years with minimal downtime.

The savings add up quickly:

• Lower per-part costs due to reduced cycle times.
• Minimal tooling changes, since all operations happen in one pass.
• Durable, rebuildable designs: many of our machines are decades old and still running strong.

For screw-machined components for heavy-duty vehicles, where margins are tight and volumes are high, Davenports deliver unbeatable economics.

Built for Brass, Steel and Tough Materials

Not all materials are created equal, and Davenports shine with free-machining metals like brass, 12L14 steel and 303 stainless. These alloys, commonly used in bushings and fasteners, are easy to machine at high speeds without sacrificing durability.

Our machines handle:

• Round stock up to 7/8″ diameter (perfect for small- to medium-sized components).
• Hex and square stock for specialized fittings.
• Cross-drilling, knurling and thread rolling all in a single setup.

This versatility ensures that heavy duty vehicle parts meet exact specs without secondary operations to keep lead times short and quality consistent.

The Human Factor

Davenport machines aren’t “set and forget.” They require experienced operators who understand the nuances of cam-driven mechanics. At Buell Automatics, our team has spent decades mastering these machines, fine-tuning setups to squeeze out every ounce of productivity.

We’ve also integrated modern upgrades, like computer monitoring systems, to track tool wear and cycle times, blending old-school reliability with data-driven insights.

The Bottom Line: When Davenports Are the Right Choice

If your project involves:

• High volumes (10,000+ parts).
• Simple to moderately complex geometries (bushings, inserts, fasteners).
• Cost-sensitive production where every second counts.

then a Davenport screw machine is likely your best bet.

At Buell Automatics, we keep 36 Davenports online and ready to tackle your toughest orders. Whether it’s hydraulic fittings for construction equipment or brass connectors for agricultural machinery, we’ve got the speed and expertise to deliver.