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FAG cylindrical roller bearings, NU 4 series: dimensions and part numbers
The FAG NU 4 series of cylindrical roller bearings brings together 18 part numbers in our catalogue across 18 basic sizes, from NU 406 to NU 424: bore (d) from 30 to 120 mm and outside diameter (D) from 90 to 310 mm. Every part number in the table links to its own page, where you can request a quote via WhatsApp or email.
NU 4 series dimension table
| Basic designation | d | D | B | Same size | Variants |
|---|---|---|---|---|---|
| NU 406 | 30 | 90 | 23 | 30x90x23 | |
| NU 407 | 35 | 100 | 25 | 35x100x25 | |
| NU 408 | 40 | 110 | 27 | 40x110x27 | |
| NU 409 | 45 | 120 | 29 | 45x120x29 | |
| NU 410 | 50 | 130 | 31 | 50x130x31 | |
| NU 411 | 55 | 140 | 33 | 55x140x33 | |
| NU 412 | 60 | 150 | 35 | 60x150x35 | |
| NU 413 | 65 | 160 | 37 | 65x160x37 | |
| NU 414 | 70 | 180 | 42 | 70x180x42 | |
| NU 415 | 75 | 190 | 45 | 75x190x45 | |
| NU 416 | 80 | 200 | 48 | 80x200x48 | |
| NU 417 | 85 | 210 | 52 | 85x210x52 | |
| NU 418 | 90 | 225 | 54 | 90x225x54 | |
| NU 419 | 95 | 240 | 55 | ||
| NU 420 | 100 | 250 | 58 | ||
| NU 421 | 105 | 260 | 60 | ||
| NU 422 | 110 | 280 | 65 | ||
| NU 424 | 120 | 310 | 72 |
Every part number in this series carries a suffix after the basic designation. The most frequent FAG suffixes, with the number of sizes they appear in: M1 (18) and XL (18). 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: NU 4 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 NU 406, 06 × 5 = 30 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.
Other FAG cylindrical roller bearings series
Which FAG NU 4 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.