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RKB spherical roller bearings, 238 series: dimensions and part numbers
The RKB 238 series of spherical roller bearings brings together 16 part numbers in our catalogue across 16 basic sizes, from 23852 to 238/1180: bore (d) from 260 to 1180 mm and outside diameter (D) from 780 to 1420 mm. Every part number in the table links to its own page, where you can request a quote via WhatsApp or email.
238 series dimension table
| Basic designation | d | D | B | Same size | Variants |
|---|---|---|---|---|---|
| 23852 | 260 | Dimension not validated | Dimension not validated | ||
| 23856 | 280 | Dimension not validated | Dimension not validated | ||
| 23860 | 300 | Dimension not validated | Dimension not validated | ||
| 23864 | 320 | Dimension not validated | Dimension not validated | ||
| 23868 | 340 | Dimension not validated | Dimension not validated | ||
| 23872 | 360 | Dimension not validated | Dimension not validated | ||
| 23896 | 480 | Dimension not validated | Dimension not validated | ||
| 238/500 | 500 | Dimension not validated | Dimension not validated | ||
| 238/630 | 630 | 780 | 112 | ||
| 238/670 | 670 | 820 | 112 | ||
| 238/710 | 710 | 870 | 118 | ||
| 238/750 | 750 | 920 | 128 | ||
| 238/850 | 850 | 1030 | 136 | ||
| 238/1000 | 1000 | 1220 | 165 | ||
| 238/1060 | 1060 | 1280 | 165 | ||
| 238/1180 | 1180 | 1420 | 180 |
In 16 of the 16 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: 238 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 23852, 52 × 5 = 260 mm); after a slash, the bore is given directly in millimetres (in the 238/500, 500 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. Where a dash appears, the dimension has not been validated yet: we confirm it when we quote.
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.
Other RKB spherical roller bearings series
Which RKB 238 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.