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Self-aligning ball bearings have two rows of balls and a common sphered raceway in the outer ring. The bearings are insensitive to angular misalignment of the shaft relative to the housing.
Self-aligning ball bearings generate less friction than any other type of rolling bearing, which enables them to run cooler even at high speeds.
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| designation | Principal dimensions | weight | brand | ||
|---|---|---|---|---|---|
| d | D | B | w | ||
| _ | mm | kg | _ | ||
| 2211 | 55 | 100 | 25 | 0.824 | 55×100×25 |
| 2211K | 55 | 100 | 25 | 0.82 | 55×100×25 |
| 2211ATN | 55 | 100 | 25 | 0 | 55×100×25 |
| 2211AKTN | 55 | 100 | 25 | 0 | 55×100×25 |
| 2211A-2RZTN | 55 | 100 | 25 | 0 | 55×100×25 |
| 2211AK-2RZTN | 55 | 100 | 25 | 0 | 55×100×25 |
| 1311 | 55 | 120 | 29 | 1.58 | 55×120×29 |
| 1311K | 55 | 120 | 29 | 1.57 | 55×120×29 |
| 1311ATN | 55 | 120 | 29 | 0 | 55×120×29 |
| 1311TN1 | 55 | 120 | 29 | 0 | 55×120×29 |
| 1311AKTN | 55 | 120 | 29 | 0 | 55×120×29 |
| 2311 | 55 | 120 | 46 | 2.61 | 55×120×46 |
| 2311K | 55 | 120 | 46 | 0 | 55×120×46 |
| 2311ATN | 55 | 120 | 46 | 0 | 55×120×46 |
| 2311AKTN | 55 | 120 | 46 | 0 | 55×120×46 |
| 1212 ETN9 | 60 | 110 | 22 | 0.9 | 60×110×22 |
| 1212 EKTN9 | 60 | 110 | 22 | 0.9 | 60×110×22 |
| 2212 EKTN9 | 60 | 110 | 28 | 1.05 | 60×110×28 |
| 2212 ETN9 | 60 | 110 | 28 | 1.1 | 60×110×28 |
| 2212 E-2RS1TN9 | 60 | 110 | 28 | 1.05 | 60×110×28 |
| 2212 E-2RS1KTN9 | 60 | 110 | 28 | 1.05 | 60×110×28 |
| 11212 TN9 | 60 | 110 | 62 | 1.15 | 60×110×62 |
| 1312 EKTN9 | 60 | 130 | 31 | 1.9 | 60×130×31 |
| 1312 ETN9 | 60 | 130 | 31 | 1.95 | 60×130×31 |
| 2312 M | 60 | 130 | 46 | 2.9 | 60×130×46 |
| 2312 K | 60 | 130 | 46 | 2.5 | 60×130×46 |
| 2312 | 60 | 130 | 46 | 2.6 | 60×130×46 |
| 1412 M | 60 | 150 | 42 | 3.95 | 60×150×42 |
| 1213 EKTN9 + H 213 | 60 | 120 | 23 | 1.45 | 60×120×23 |
| 2213 EKTN9 + H 313 | 60 | 120 | 31 | 1.8 | 60×120×31 |