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Precision Ground Drilled Balls
FRANTZ Sterling® Steel Ball has been manufacturing carbon steel balls in Sterling, IL since 1947. Sterling® Steel Ball products earned a national reputation for quality, precision, and performance. At Sterling® Steel Ball, we make carbon steel balls, we excel at high speed precision drilling into spherical shapes, and we sell peace of mind.

This is our Precision Drilled Ball value to you:
  • Built to Quality Standards
    Precision drilled ball products are manufactured in Sterling, IL to rigorous automotive specifications and tolerances. Our plant is IATF 16949:2016 certified and we utilize lean techniques and operate under continuous process improvement principles. We test our product through the production process utilizing statistical sampling techniques to assure process control. At the end of the process we perform a rigorous final inspection. Sterling® Steel Ball operates a state of the art testing lab to measure our products against ABMA standards including roundness, surface roughness, case depth, and hardness. Sterling® Steel Balls are simply better. Click for further details on our Steel Ball Quality.

  • Precision Drilling Capabilities
    Sterling® Steel Ball utilizes high speed technology to drill precise and accurate holes of various diameters and depths into spheres of various sizes and materials. Capabilities include drilling balls made of carbon steel, M4 tool steel, and stainless steel. Typical uses for drilled balls are automotive engine push rods, seat slides, paint agitation, and decorative applications. Call us for custom precision drilling services for your application or drilling for products that you supply.

  • Finishing Options
    Sterling® Steel Ball utilizes heat treating technology to harden steel balls to your desired specification. Beyond hardening, choose from plain, polished or various plated finishing options.

  • Sterling Armor®
    For applications where corrosion is an issue, FRANTZ offers Sterling Armor®; a patented heat treating process that changes the physical microstructure within the steel surface of the ball to provide corrosion protection superior or equivalent to stainless steel in most environments. Finishes include gloss black or dull patina. Sterling Armor® is a cost effective solution to your drilled ball corrosion challenges. Click here for more information about Sterling Armor®.

Our drilled balls undergo extensive testing and inspection to meet your exact specifications. We feature a high volume drilling facility. Special drilling of customer-supplied product is available.

  • Manufactured from SAE/AISI grade carbon steel or tool steel
  • Full range of drilled hole diameters and depths
  • Variety of ball sizes

Typical Uses
  • Push rods
  • Seat slides
  • Decorative applications

Tolerances by Grade for Lots of Balls and Individual Balls
Ball GradeAllowable Lot Diameter VariationAllowable Ball Diameter VariationAllowable Deviation from Spherical Form

Precision Drilled Balls by FRANTZ. Simply better.

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