How to Calculate Bearing Size

••• kool99/iStock/GettyImages

Determine the size of a replacement ball bearing before heading to the store or placing an order to avoid wasting money and time. Typically, cylindrical-shaped ball bearings contain a set of balls that allow the outer casing to spin freely. Ball bearings come in many sizes for an array of equipment, from skateboard wheels to industrial equipment. The size of a bearing is calculated by finding its relevant dimensions in millimeters.

    Measure the thickness of the old bearing, as viewed from its edge, in millimeters. This ensures that the bearing fits into the circular hole in the equipment.

    Measure the diameter of the central hole in the bearing in millimeters to be sure that the bearing fits on the axle of the device you will use it with. The diameter is the width of a circle, measured on a line that passes through its center.

    Determine the total diameter of the bearing in millimeters.

Related Articles

How to Read a Metric Micrometer
How to Disassemble a Starrett Micrometer
How to Calculate the Volume of an Auger
Instructions for Using a General Tools 17 Square Head...
How to Find FWHM
How to Determine the Diameter of a Circle
What are Gehl 4625 Skid Steer Specifications?
The Dimensions of a NEMA 56C
How to Convert Inches to 16ths of an Inch
How to Calculate the Diameter of a Circle From a Linear...
How to Convert Seconds Into Miles Per Hour
How to Calculate Wheel Circumference
How to Use a Math Compass
How to Use a Bushnell Voyager Telescope
How to Convert mm to Fractional Inches
Names of Tools Used to Measure Angles
How to Calculate Rack & Pinion
How to Convert 48 Millimeters to Inches
How to Calculate Conveyor Belt Speed
How to Find Bearing Numbers by Size