Brand We Carry
RKB angular contact ball bearings, 33 series: dimensions and part numbers
The RKB 33 series of angular contact ball bearings brings together 20 part numbers in our catalogue across 20 basic sizes, from 3302 to 3322: bore (d) from 15 to 110 mm and outside diameter (D) from 42 to 240 mm. Every part number in the table links to its own page, where you can request a quote via WhatsApp or email.
33 series size chart
| Basic designation | d | D | B | Same size | Variants |
|---|---|---|---|---|---|
| 3302 | 15 | 42 | 19 | 15x42x19 | |
| 3303 | 17 | 47 | 22.2 | 17x47x22.2 | |
| 3304 | 20 | 52 | 22.2 | 20x52x22.2 | |
| 3305 | 25 | 62 | 25.4 | 25x62x25.4 | |
| 3306 | 30 | 72 | 30.2 | 30x72x30.2 | |
| 3307 | 35 | 80 | 34.9 | 35x80x34.9 | |
| 3308 | 40 | 90 | 36.5 | 40x90x36.5 | |
| 3309 | 45 | 100 | 39.7 | 45x100x39.7 | |
| 3310 | 50 | 110 | 44.4 | 50x110x44.4 | |
| 3311 | 55 | 120 | 49.2 | 55x120x49.2 | |
| 3312 | 60 | 130 | 54 | 60x130x54 | |
| 3313 | 65 | 140 | 58.7 | 65x140x58.7 | |
| 3314 | 70 | 150 | 63.5 | 70x150x63.5 | |
| 3315 | 75 | 160 | 68.3 | 75x160x68.3 | |
| 3316 | 80 | 170 | 68.3 | 80x170x68.3 | |
| 3317 | 85 | 180 | 73 | ||
| 3318 | 90 | 190 | 73 | 90x190x73 | |
| 3319 | 95 | 200 | 77.8 | ||
| 3320 | 100 | 215 | 82.6 | ||
| 3322 | 110 | 240 | 92.1 |
In 20 of the 20 sizes the basic designation is also listed on its own, without a suffix. 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: 33 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 3306, 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.
Need a bearing from the RKB 33 series?
Tell us the complete part number, or the size and variant, plus the quantity, and we'll send a quote by WhatsApp or email.