Official distributor
NTN thrust ball bearings, 512 series: dimensions and part numbers
The NTN 512 series of thrust ball bearings brings together 35 part numbers in our catalogue across 35 basic sizes, from 51200 to 51260: bore (d) from 10 to 300 mm and outside diameter (D) from 26 to 420 mm. Every part number in the table links to its own page, where you can request a quote via WhatsApp or email.
512 series dimension table
| Basic designation | d | D | H | Same size | Variants |
|---|---|---|---|---|---|
| 51200 | 10 | 26 | 11 | ||
| 51201 | 12 | 28 | 11 | ||
| 51202 | 15 | 32 | 12 | ||
| 51203 | 17 | 35 | 12 | ||
| 51204 | 20 | 40 | 14 | ||
| 51205 | 25 | 47 | 15 | 25x47x15 | |
| 51206 | 30 | 52 | 16 | ||
| 51207 | 35 | 62 | 18 | 35x62x18 | |
| 51208 | 40 | 68 | 19 | 40x68x19 | |
| 51209 | 45 | 73 | 20 | ||
| 51210 | 50 | 78 | 22 | ||
| 51211 | 55 | 90 | 25 | ||
| 51212 | 60 | 95 | 26 | ||
| 51213 | 65 | 100 | 27 | 65x100x27 | |
| 51214 | 70 | 105 | 27 | ||
| 51215 | 75 | 110 | 27 | ||
| 51216 | 80 | 115 | 28 | ||
| 51217 | 85 | 125 | 31 | ||
| 51218 | 90 | 135 | 35 | ||
| 51220 | 100 | 150 | 38 | ||
| 51222 | 110 | 160 | 38 | ||
| 51224 | 120 | 170 | 39 | ||
| 51226 | 130 | 190 | 45 | ||
| 51228 | 140 | 200 | 46 | ||
| 51230 | 150 | 215 | 50 | ||
| 51232 | 160 | 225 | 51 | ||
| 51234 | 170 | 240 | 55 | ||
| 51236 | 180 | 250 | 56 | ||
| 51238 | 190 | 270 | 62 | ||
| 51240 | 200 | 280 | 62 | 200x280x62 | |
| 51244 | 220 | 300 | 63 | ||
| 51248 | 240 | 340 | 78 | ||
| 51252 | 260 | 360 | 79 | ||
| 51256 | 280 | 380 | 80 | ||
| 51260 | 300 | 420 | 95 |
In 35 of the 35 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: 512 gives the bearing type and the dimension series; for the same bore, each series has a different outside diameter and height. What follows is the bore code: from 04 upwards, multiplying by 5 gives the bore in millimetres (in the 51206, 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 104, in millimetres: d is the bore, D the outside diameter and H the height. 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 height, and find the matching row: with that size and the variant you need, we will quote it.
Other NTN thrust ball bearings series
Which NTN 512 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.