The Vertical Centrifugal Casting Process

Ideal for non-ferrous centrifugal casting parts

Vertical Centrifugal Casting is a specialized metal casting process particularly well-suited for parts made from non-ferrous alloys such as copper-based bronzes/brasses, aluminum alloys and nickel alloys. Centrifugal casting provides superior part integrity, mechanical performance and dimensional accuracy compared to other metal forming processes.  Centrifugal casting is also commonly used to make parts from stainless steel, a unique ferrous alloy that is typically blended with chromium and other elements to resist corrosion.

Non-ferrous centrifugal casting uses centrifugal force to cast molten non-ferrous alloys into symmetrical, hollow, or cylindrical shapes. The centrifugal casting method creates parts with superior mechanical properties, a fine grain structure and fewer defects compared to static casting. It is used to produce items such as bearings, bushings, pipes, and engine components for industries like aerospace, automotive, marine, medical, semiconductor, and many more.

Additional benefits of centrifugal casting include:

• Superior Metal Quality: The centrifugal force pushes molten metal outward against the mold wall, driving out gases and impurities, creating a sound, dense casting with minimal porosity.
• Excellent Mechanical Properties: Centrifugally cast parts exhibit greater strength, ductility, and toughness than those made by static or sand casting, with superior wear resistance, especially valuable for bearings, bushings, and sleeves.
• Reduced Machining and Waste: Centrifugal casting produces near-net-shape tubes, rings, or sleeves, often needing minimal machining.  No cores are required for hollow parts, saving tooling costs and reducing material waste.
• Cost and Production Efficiency: Shorter lead times and repeatable quality—especially valuable for small to medium runs of high-integrity parts.
• Versatility of Shape and Size: Works for a wide range of part sizes—from small bushings to large bearing sleeves and gear blanks.

A sampling of Components ideal for the Centrifugal Casting Process:

• Medical Diagnostic Equipment Components
• Subsea Oil & Gas Components
• Critical Application Items (CAI)
• Pintle Bushings
• Hinge Balls
• Oil-grooved Wear Bushings

The Johnson Centrifugal Castings Process

The JCT vertical centrifugal casting process guarantees the highest quality metal components, through pouring liquid metal into a rapidly rotating die.

During this process the liquid metal is under such a heavy G load that air bubbles cannot exist, allowing the metal to freeze uniformly into a shape that perfectly matches the die. This process of centrifugal casting guarantees the highest quality metal components.

By solidifying uniformly under high pressure, centrifugal castings combine the chemical and mechanical property capability of forgings with the cost efficiency of traditional castings.

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POINTS TO REMEMBER

Secondary Operations:

• X-ray
• UT (Ultrasonic Testing)
• Hobbing, Broaching, Thread cutting (some we do in house)
• CMM (Coordinate Measuring Machine)
• Heat Treating
• HIP (Liquid Hot Isostatic Pressing)
• Export Packaging