The E Series self-aligning roller bearings feature an optimised internal structure design, with a double-row symmetrical barrel-shaped roller arrangement. The central rib on the inner ring has been removed, and the bearings are fitted with a stamped steel cage. The roller guidance structure has been optimised to reduce operating friction and improve heat dissipation. These bearings have an open design and require external sealing; they are suitable for both grease lubrication and circulating oil lubrication. Compared with conventional CC-type bearings, the E Series features an optimised contact profile between the rollers and raceways, reducing contact stress, offering higher rated loads, lower operating noise and improved fatigue life; compared with the E1 Series, it is positioned as the basic model and offers outstanding value for money. It is widely used in various medium- to heavy-duty industrial transmission equipment, such as conveyors, fans, cement machinery, mining machinery, general-purpose gearboxes and construction machinery.
| Bearing model number | Basic Dimensions（mm） | Basic load （KN） |
Rated speed(rpm) | Bearing weight | ||||
|---|---|---|---|---|---|---|---|---|
| Cylindrical hole | Conical hole | d inner diameter |
D outer diameter |
B thickness |
Dynamic load Cr |
Static load Cor |
Limiting Speed | |
| 21315 E | 21315 EK | 75 | 160 | 37 | 291 | 325 | 5 600 | 3.75 |
| 22215 E | 22215 EK | 75 | 130 | 31 | 217 | 240 | 6 300 | 1.7 |
| 22314 E | 22314 EK | 70 | 150 | 51 | 413 | 430 | 4 500 | 4.55 |
| 21314 E | 21314 EK | 70 | 150 | 35 | 291 | 325 | 5 600 | 3.1 |
| 22214 E | 22214 EK | 70 | 125 | 31 | 213 | 228 | 6 700 | 1.55 |
| 22313 E | 22313 EK | 65 | 140 | 48 | 357 | 360 | 5 000 | 3.75 |
| 21313 E | 21313 EK | 65 | 140 | 33 | 243 | 270 | 6 000 | 2.55 |
| 22213 E | 22213 EK | 65 | 120 | 31 | 198 | 216 | 7 000 | 1.55 |
| 22312 E | 22312 EK | 60 | 130 | 46 | 325 | 335 | 5 300 | 3.1 |
| 21312 E | 21312 EK | 60 | 130 | 31 | 217 | 240 | 6 300 | 2.1 |
| 22212 E | 22212 EK | 60 | 110 | 28 | 159 | 166 | 7 500 | 1.15 |
| 22311 E | 22311 EK | 55 | 120 | 43 | 280 | 280 | 5 600 | 2.45 |
| 21311 E | 21311 EK | 55 | 120 | 29 | 159 | 166 | 7 500 | 1.7 |
| 22211 E | 22211 EK | 55 | 100 | 25 | 129 | 127 | 8 500 | 0.84 |
| 22310 E | 22310 EK | 50 | 110 | 40 | 228 | 224 | 6 300 | 1.9 |
| 21310 E | 21310 EK | 50 | 110 | 27 | 159 | 166 | 7 500 | 1.35 |
| 22210 E | 22210 EK | 50 | 90 | 23 | 107 | 108 | 9 500 | 0.63 |
| 22309 E | 22309 EK | 45 | 100 | 36 | 190 | 183 | 7 000 | 1.4 |
| 21309 E | 21309 EK | 45 | 100 | 25 | 129 | 127 | 8 500 | 0.99 |
| 22209 E | 22209 EK | 45 | 85 | 23 | 104 | 98 | 10 000 | 0.58 |
