Notice that only one inch increase in diameter caused a 4 pound increase in weight. This three inch diameter ball is more than triple the weight of the two inch diameter ball.

Steelball weightcalculator

**See also: A density measurement conversion tool that is available at http://www.easyunitconverter.com/density-unit-conversion/density-unit-converter.aspx , for density unit conversions of various materials such as brass, copper, steel, and aluminum.

The radius of 1.5 inches cubed equals $3.375 ⋅ 4 ⋅ π = 42.410$, divided by 3, equals 14.137 cubic inches, times 0.409 ( the density of lead ) gives 5.782 pounds.

Steelball bearing weight

Ball bearing weightchart