Table of Contents
How are tapered roller bearings measured?
Taper roller bearings are still measured in the same way, Inside diameter x Outside diameter x Width and are also identified again buy a set of numbers and sometimes letters depending on the manufacturer.
How do you determine bearing size by number?
The first digit indicates the width or height series (dimensions B, T or H). The second digit identifies the diameter series (dimension D). The last two digits of the basic designation identify the size code of the bearing bore. The size code multiplied by 5 gives the bore diameter (d) in mm.
Are there different sizes for bearings?
Roller and ball bearings are available in different standard sizes. Rolling element bearings are produced in standard inch and metric sizes and are based upon the standard hole system. This means that the bearing bore is the determining size and the shaft is machined to fit.
How do bearing sizes work?
Remember most bearings sizes are full mm or inch sizes. eg: 9.53mm would be 3/8 inch. If you measured at 9.5mm its probably an inch sized bearing. To measure the bore of a bearing you can use a vernier caliper like the one shown.
How are roller bearings sized?
Bearings are measured by their inner diameter, outer diameter, and width; the size of a bearing is normally listed as such: ID x OD x W. These measurements are normally taken in millimeters, but can be converted to inches.
How do you measure the size of a bearing?
Simply place the jaws of your vernier caliper around the width of the outer ring of the bearing and close it until it meets the ring. Again, it should feel snug but not tight. The value which is displayed on the caliper is the width of the bearing.
What is inch bearing?
Imperial bearings. Inch sized (imperial) bearings are still used in many applications and are manufactured in inch sizes, to match British and American machinery. NKE imperial bearings are manufactured according to the British Standard BS 292:1982.