Bronze CNC Machining
Custom bronze CNC machining for durable, high-performance bronze parts—built to your specs and ready for production.
Accurate, Consistent Bronze CNC Machining
Bronze parts have to be right the first time. Bushings, bearings, guides, and valve components only perform when tolerances are exact and surfaces are clean. Even a small deviation can lead to equipment failure.
Ephrata Precision machines bronze components to your specifications, providing the wear resistance, lubricity, and corrosion resistance your application demands.
When reliability matters, and the part can’t fail, partner with a team that delivers consistent, precise bronze machining results.
Why CNC Machining Bronze Requires the Right Partner
A bronze bushing that’s out of round can seize a shaft. A bearing that’s a thousandth too tight can overheat a machine. A valve component with a poor surface finish can leak, causing an entire production line to shut down.
Ephrata Precision helps you avoid those risks. We’ve been machining bronze parts since 1972, and our skilled technicians understand how each alloy behaves on the machine. Doosan turning centers provide stability and control for large bronze components, while Haas 3-axis and 5-axis mills deliver accurate geometry on more complex parts.
When your project is critical, you need a partner with the people, the equipment, and the capacity to deliver every time.
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CNC Machining
Bronze Alloys We Machine (CNC Machining Bronze Parts)
C932, also known as SAE 660 or bearing bronze, is our most common runner due to its strength, lubricity, and wear resistance.
We machine any bronze alloy specified on your print, including:
- C932 (SAE 660) bearing bronze
- Aluminum bronze
- Phosphor bronze
- Manganese bronze
- Other specialty grades as required
Each alloy behaves differently on the machine. Our technicians adjust tooling, speeds, feeds, and coolant strategy to maintain tight tolerances and consistent finishes across all bronze materials.
Industries Relying on Bronze CNC Machining
Bronze is used wherever equipment needs smooth movement, consistent alignment, and dependable wear resistance. These are some of the industries that rely on CNC-machined bronze parts and the components they depend on every day.
Food Processing and Packaging
In food plants, parts must move constantly without contaminating the product or breaking down under continuous load.
Common bronze parts:
- Bushings and bearings for conveyors and rotating assemblies
- Guides and wear plates in high-cycle machinery
Why bronze works: Its natural lubricity keeps friction low and helps equipment run clean and steady.
Agriculture and Heavy Equipment
Machinery in the field is exposed to dirt, shock, vibration, and inconsistent lubrication.
Common bronze parts:
- Bearing sleeves for pivot points and linkages
- Fittings for hydraulic and mechanical systems
Why bronze works: It holds up under heavy loads and keeps moving parts reliable even in harsh, dirty environments.
Medical and Laboratory Equipment
Precision and cleanliness matter in every motion inside a medical or testing device.
Common bronze parts:
- Precision bushings in positioning mechanisms
- Small fittings in pumps and fluid systems
Why bronze works: It offers stable dimensions and smooth movement without introducing contaminants.
Additional Industries
Bronze components also play a key role in
marine,
metalworking machinery,
fluid handling systems, and a wide range of
OEM assemblies where low friction, long life, and corrosion resistance are critical.
Our CNC Capabilities for Bronze Machining
Our turning department processes bronze parts up to 32 inches in diameter and 72 inches long. The Doosan Puma 700 and 480L ensure stability, maintaining roundness and tight dimensions on bushings, bearings, fittings, and other cylindrical parts.
With the right equipment and experience, we meet tight tolerances and deliver complex bronze applications.
Our Haas VF 6 delivers reliable results on larger bronze components.
- Travel capacity of 64 inches by 32 inches by 30 inches
- Stable fixturing for plates, blocks, guides, and structural parts
- Optional 4th axis for additional flexibility
Complex bronze geometry benefits from accurate multi-face machining in a single setup.
- Haas UMC 750 with 30-inch by 20-inch by 20-inch travel
- Ideal for components that require precise alignment across multiple surfaces
- Reduced setup error and tighter overall tolerance control
EDM Support for Bronze Components
Some bronze parts require fine features, sharp internal corners, or geometry that cannot be produced with traditional machining. Our EDM capabilities support those requirements.
- Wire EDM: Clean, accurate profiles for tight internal geometry
- Sinker EDM: Ideal for pockets, cavities, and complex forms
- Hole Drilling EDM: Small diameter, high precision holes in bronze
Tooling and fixturing are supported by our tool and die department for consistent repeatability.
Tolerances, Size Limits, and Technical Details
Bronze machining requires careful control of heat, chip load, and toolpath strategy. We maintain:
- Standard machining tolerance of plus or minus 0.005 inches
- Typical bushing and bearing tolerance of minus 0.000 inch to plus 0.001 inch
- Tight tolerance capability of approximately 0.0005 inch when required
Large or small, simple or complex, each part receives the same level of precision and inspection.
Bronze Machining From a Lancaster Shop Serving North America
Ephrata Precision has been manufacturing parts in Lancaster, PA, since 1972, growing into a 56,000 square foot facility with machining, tool and die, polyurethane molding, and full inspection under one roof. Our team brings decades of experience to every bronze machining project. Key strengths include:
- Skilled American technicians
- Advanced CNC, EDM, and inspection equipment
- Capacity for prototypes, custom parts, and production runs
As a Pennsylvania-based manufacturer, communication is direct and dependable. You always know where your project stands, who’s responsible for it, and when it’ll ship. No guesswork, no delays, and no lapses in communication.
Frequently Asked Questions About Bronze CNC Machining
At Ephrata Precision Parts, we understand that choosing materials and processes can be challenging. Here are common questions about our bronze CNC machining services to help you decide.
How do you ensure quality and consistency on bronze parts?
Every bronze part goes through controlled machining, in-process checks, and final inspection using CMMs, comparators, and calibrated instruments. This ensures dimensions, roundness, and finishes stay consistent from prototype through production.
Can you support both prototype work and high-volume production?
Yes. We handle prototypes, small batches, and full production, including Kanban and blanket orders. Our 56,000-square-foot facility and stocked materials help maintain dependable lead times.
Which bronze alloy should I choose for my application?
C932 works well for general wear parts. Aluminum bronze offers strength and corrosion resistance. Phosphor bronze provides fatigue resistance. We machine any alloy listed on your print and can advise when needed.
