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SKF self-aligning ball bearings, 23 series: dimensions and part numbers
The SKF 23 series of self-aligning ball bearings brings together 91 part numbers in our catalogue across 20 basic sizes, from 2301 to 2320: bore (d) from 12 to 100 mm and outside diameter (D) from 37 to 215 mm. Every part number in the table links to its own page, where you can request a quote via WhatsApp or email.
23 series dimension table
| Basic designation | d | D | B | Same size | Variants |
|---|---|---|---|---|---|
| 2301 | 12 | 37 | 17 | ||
| 2302 | 15 | 42 | 17 | 15x42x17 | |
| 2303 | 17 | 47 | 19 | 17x47x19 | |
| 2304 | 20 | 52 | 21 | 20x52x21 | |
| 2305 | 25 | 62 | 24 | 25x62x24 | |
| 2306 | 30 | 72 | 27 | 30x72x27 | |
| 2307 | 35 | 80 | 31 | 35x80x31 | |
| 2308 | 40 | 90 | 33 | 40x90x33 | |
| 2309 | 45 | 100 | 36 | 45x100x36 | |
| 2310 | 50 | 110 | 40 | 50x110x40 | |
| 2311 | 55 | 120 | 43 | 55x120x43 | |
| 2312 | 60 | 130 | 46 | 60x130x46 | |
| 2313 | 65 | 140 | 48 | 65x140x48 | |
| 2314 | 70 | 150 | 51 | 70x150x51 | |
| 2315 | 75 | 160 | 55 | 75x160x55 | |
| 2316 | 80 | 170 | 58 | 80x170x58 | |
| 2317 | 85 | 180 | 60 | 85x180x60 | |
| 2318 | 90 | 190 | 64 | 90x190x64 | |
| 2319 | 95 | 200 | 67 | 95x200x67 | |
| 2320 | 100 | 215 | 73 | 100x215x73 |
In 12 of the 20 sizes the basic designation is also listed on its own, without a suffix. The most frequent SKF suffixes, with the number of sizes they appear in: C3 (15), M (13), 2RS1TN9 (9), E (9), and K (8). The suffix defines the variant (sealing, cage, internal clearance or other options): to request a quote, send us the full part number marked on the bearing, the box or the drawing.
How to read the part number: 23 gives the bearing type and the dimension series; for the same bore, each series has a different outside diameter and width. What follows is the bore code: from 04 upwards, multiplying by 5 gives the bore in millimetres (in the 2306, 06 × 5 = 30 mm); 00, 01, 02 and 03 stand for 10, 12, 15 and 17 mm.
The table gives the boundary dimensions of each basic designation according to ISO 15, in millimetres: d is the bore, D the outside diameter and B the width. These are standardised dimensions: the same basic designation has the same dimensions in every brand.
If the part number on the bearing can no longer be read, measure the bore, the outside diameter and the width, and find the matching row: with that size and the variant you need, we will quote it.
Which SKF 23 series bearing do you need?
Send us the full part number, or the size and the variant, with the quantity: we will quote it via WhatsApp or email.