Please note that there are many different ball bearing types, series, and suffixes. This is just a general overview, and specific bearings may have unique numbering systems depending on the manufacturer and application.  For example, bearing numbers will have additional letters and numbers at any part of the code, this often means it is a specialised bearing or is specific to the bearings’ application.  An example is a letter ‘M’ between position 8 and 9 denotes the bearing has a brass cage.

Bearingnumber meaning pdf

The commonly used bearing numbering system is the ISO (International Organisation for Standardisation) bearing designation system, which is widely followed by manufacturers worldwide. There is also the original ABMA (American Bearing Manufacturers Association) numbering system that is still used by some manufacturers.

(2) A windowed metal door that is equipped with both a dead bolt and a doorknob lock. If the window has an opening of five inches or more measured in any direction, the window shall be covered with steel bars of at least one-half inch diameter or metal grating of at least nine gauge affixed to the exterior or interior of the door.

Bearingnumber List

(c) Heating, ventilating, air-conditioning, and service openings are secured with steel bars, metal grating, or an alarm system.

When referring to bearing numbers, we are referring to the bearing designation or part number often etched or stamped on the inner ring of the bearing. This is a standardised alphanumerical code that conveys essential information about the bearing including type, load series, bore size, seal and clearance.

2RS - is a suffix that indicates the bearing has two rubber seals (RS = Rubber Seal) on both sides of the bearing to protect it from contaminants and retain lubricant