Important Information – TBA Rules Regarding Drilling Specifications

By Chris Rushton
December 12, 2018

TBA has received communication from World Bowling regarding the changes to the rules for drilling specifications.

Rule 603 has been revised to define the current balance rules, the new rules that start on January 1, 2019 and the final rules that will apply after August 1, 2020.

In Summary
From January 1, 2019 to August 1, 2020, there are two bowling ball balancing systems:

1.  Balls greater than 8 pounds without a balance hole must comply with Balance – B rules.
2.  Balls greater than 8 pounds with a balance hole, must comply with Balance – A rules.
3.  The purpose of the two rules is to start the process of plugging balance holes and to check all balls comply with the new rules.
4.  Balls greater than 8 pounds cannot have more than 3 ozs between any two halves.

From August 1, 2020, no balance holes will be permitted.  You can find the latest Tenpin Bowling Australia Limited League Tournament & General Playing Rules book here.

Still need further information?
Contact the Tenpin Bowling Australia National Office on (07) 3262 4455 or send us an email [email protected].