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How Do You Determine Standard Ball Bearing Sizes

Release time : 2015-06-10 12:24:09
By Bearing Manufacturer>Bearing News>How do you determine standard ball bearing sizes? ?2004-2012 In general machinery applications,the standard ball bearing sizes for a given bearing arrangement is determined by the load carrying capacity. The selection of bearing sizes is made not only in relation to the actual load, but also to the desired life and operational reliability. The standard ball bearing sizes should be selected on the basis of static load ratings. The permissible load for a bearing is determined by the amount of major deformation to the raceway caused by the load. Loads operating on slow oscillating bearing or a stationary bearing or on rotating bearing can produce flat areas on the rolling elements and indentations in the raceways. If the load operates for a number of times, the deformation will increase and will be evenly spread over the whole raceway, which can lead to vibration in the standard bearing, noise and increased friction. As a result the standard ball bearing sizes need to be carefully chosen. The following section gives a brief idea on various bearing standards, worldwide bearing standard, bearing codes, ball bearing standards. You can learn a lot about a bearing just from its part number. Deep Groove Ball Bearings is the 6203ZZ bearing. This can be divided into its components: standard ball bearing sizes: 6203ZZ 6 = Type Code 2 = Series 03 = Bore ZZ = Suffix The method is followed universally For the Type Codes 1 Self-aligning ball bearing 2 Wide self-aligning ball bearing 22 Self-aligning roller bearing 23 Wide self-aligning roller bearing 3 Double-row angular contact ball bearing 4 Double-row ball bearing 5 Thrust ball bearing 6 Single-row deep groove ball bearing 16 Thin section single-row deep groove ball bearing 7 Single-row angular contact bearing. For an inch bearing, the first digit is R. R Inch (non-metric) bearing. Series identify the lightness or the heaviness 7 Not sure 8 Extra thin section 9 Very thin section 0 Extra light 1 Extra light thrust 2 Light 3 Medium 4 Heavy The bore sizes in mm of Ball Miniature Bearings Except for 0 through 3, the bore size is simply five times the third and fourth digits together. 0 through 3, however, are different. 00 10mm 01 12mm 02 15mm 03 17mm The Last Suffix is the High Speed Bearings Speciality Z Single shielded ZZ Double shielded RS Single sealed 2RS Double sealed V Single non-contact seal VV Double non-contact seal DDU Double contact seals NR Snap ring and groove M Brass cage.