Skip to main content

Understanding the properties of the ball

? Three Key Properties of a Bowling Ball

1. CG – Centre of Gravity

  • Definition: The CG marks the balance point of the ball's core. It’s usually indicated by a small dot or marking on the surface of the ball.

  • Function:

    • Helps determine the drilling layout.

    • Affects how the ball transitions through the skid, hook, and roll phases.

    • Closer to the grip, the reaction will be smoother.

    • Farther from the grip, it can create more flare potential (depending on the layout).

    • With the new regulations regarding the balance hole, as well as today’s equipment, it has become less of an important factor than it used to be.

2. PIN

  • Definition: The PIN is the distance between the top of the core and the CG, shown as a small coloured dot on the ball.

  • Function:

    • Affects the flare potential and length of the ball before it begins to hook.

    • A shorter PIN (e.g. 1–2") will create an earlier hook, more controlled motion.

    • A longer PIN (e.g. 4–5") will create more length and a sharper backend reaction.

  • 3. Mass Bias (MB)

    • Definition: Present in asymmetrical balls, it's the point where the core is imbalanced — usually marked with a symbol (e.g., a line, dot, or "MB" logo).

    • Function:

      • Controls the shape and sharpness of the hook, especially in the backend phase.

      • Crucial for advanced layouts — especially in high-performance balls.

      • Placement of the Mass Bias affects how quickly and how strongly the ball changes direction.

      • POWERPNT_dm8VdKhjJW.png
      • POWERPNT_r84VipZEdI.png

        POWERPNT_hahor5kAUs.png

        Key takeaway
        • The "pin in or out" refers to the orientation of the weight block, while "top weight" is a ball characteristic used to achieve the desired layout.
        • The most important factor for performance is the layout, which is a combination of top weight, pin length, and mass bias location. 

          POWERPNT_J8qURsy2QA.png

          POWERPNT_oFmRoyNbv9.png

          What are the different factors that influence the reaction of your bowling ball?
        • POWERPNT_0E8hB6sc4B.png

          POWERPNT_EpBlZ0QPeO.png

        •  

          POWERPNT_oylxCqdC8I.png

        • POWERPNT_duJGxPwD2R.png

          POWERPNT_KufqFydRtg.png


        • Equipment Surface 
        • POWERPNT_brFtUiStj9.png