The meaning of the suffix letters for SKF and SKF bearings

SKF bearing codes have several suffixes, in order: internal design, external design, cage, other features. Other characteristics are always separated from the basic code or other suffixes by a slash. The internal design includes: A, B, C, D, E. The external design is designated by codes such as CA, CB, CC, 2F, G, GA, GB, GC, RS, and so on. The cage codes include: F (machined cage made of steel or special steel), J, L (machined cage made of lightweight alloy), M (machined cage made of brass), MP, P (nylon cage), Y, V, VH, and so on. Generally, attention is mainly paid to the bearing cage and internal clearance. The prices of different retainers vary greatly. The internal clearance is related to the future operation of your machine. The internal gaps are: C1, C2, C3, C4, C5, with the gaps becoming larger as we move further forward. There are many other codes, which I won’t list all here.

You can refer to this; it is a description of SKF bearing models, which should be helpful to you. The cloud storage link is http://www.rayfile.com/files/ad97d7bd-3c70-11df-8daf-0015c55db73d/

SKF model designation: Type prefix, suffix, model – determination of bearing type. 0 0 □ Double-row angular contact ball bearings; 1 1 □ Self-aligning ball bearings; 2 2 □ Spherical roller bearings, spherical roller thrust bearings; 3 3 □ Tapered roller bearings; 4 4 □ Double-row deep groove ball bearings; 5 5 □ Thrust ball bearings; 6 6 □ Deep groove ball bearings; 7 7 □ Angular contact ball bearings; 8 8 □ Cylindrical roller thrust bearings. B BK: Sealed, stamped outer ring needle bearings; C C: CARB® H HK: Open, stamped outer ring needle bearings; K K: Needle and cage thrust assemblies; N N: Cylindrical roller bearings. The second letter, and sometimes the third letter, is used to determine the flange configuration, such as NJ, NU, NUP; models of double or multiple rows of cylindrical roller bearings always start with NN. N NA: Needle bearings with dimensions in accordance with ISO 15. N NK: Needle bearings. Q QJ: Four-point contact ball bearings. T T□: Tapered roller bearings; metric dimensions in accordance with ISO 355-1977. T □□: Tapered roller bearings in imperial units, conforming to the ABMA series; their models are designated according to different systems specified in ANSI-ABMA Standard 19 (see the prefix K-). Basic models – Special bearings: The basic model of a special bearing is usually the number indicated on the bearing’s drawing. These drawing numbers are usually six- or seven-digit numbers, and generally do not indicate any information regarding the bearing type, size, or design. Bearings improved on the original design often carry suffixes A to E or combinations of these letters, such as AB, added after the original drawing number. The meanings of these suffixes are specific to the actual bearings; therefore, it is necessary to refer to the actual drawings. Recently, the drawing numbers have a Bxxx prefix, where B stands for bearing, and the remaining three digits determine the type of bearing. In some cases, the fourth letter is omitted. Recently, a new format has been introduced: a prefix is added before the four-digit number to identify the type of bearing, with the values separated by a hyphen; for example, BB1-3001, instead of using six- or seven-digit part numbers. Supplementary model — prefix. The prefix is used to identify the components of a bearing; it is usually followed by the full model number of the bearing, or it serves to prevent confusion with other bearing models. For example, they are used before the cone roller bearing designation in systems (primarily) for British-style bearings, as specified in ANSI/ABMA Standard 19. A AR – Ball or roller and cage assembly; G GS – Cylindrical roller thrust bearing, bearing ring; I IR – Inner ring of a radial bearing; K K – Roller and cage assembly for cylindrical roller thrust bearings; K K – Fits ABMA standard series, British imperial tapered roller bearings, with inner ring (tapered inner ring) or outer ring (tapered outer ring) (gradually being phased out)

This is the content I uploaded as an attachment. Have people downloaded it? No one stepped in to help either

Reply 5# lvtie1984 wolaigainidingyi*a

Not bad! Not bad! Not bad! Not bad! Not bad! Not bad!

Reply to 5# lvtie1984: I’ve learned it, thanks

I downloaded it and read it carefully; thanks for sharing it

I still don’t understand what the three letters SKF stand for. Can someone help?