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 | |
| 22308 E | 22308 EK | 40 | 90 | 33 | 155 | 140 | 8 000 | 1.05 |
| 21308 E | 21308 EK | 40 | 90 | 23 | 107 | 108 | 9 500 | 0.75 |
| 22208 E | 22208 EK | 40 | 80 | 23 | 98.5 | 90 | 11 000 | 0.53 |
| 22207 E | 22207 EK | 35 | 72 | 23 | 88.8 | 85 | 12 000 | 0.45 |
| 22206 E | 22206 EK | 30 | 62 | 20 | 66.1 | 60 | 14 000 | 0.29 |
| 22205 E | 22205 EK | 25 | 52 | 18 | 49.9 | 44 | 17 000 | 0.26 |
