Four-point angular contact ball bearings feature a special dual-half-inner-ring design, enabling them to withstand radial loads and bidirectional axial loads, with a single bearing set providing bidirectional positioning. They have a compact footprint and are easier to install than two sets of single-row angular contact bearings. They offer good maximum rotational speeds but lack self-aligning capability. They are commonly used in gearboxes, screw compressors, slewing rings, pumps and valves, and other applications where bidirectional axial loads must be supported and installation space is limited.
| Bearing model number | Basic Dimensions（mm） | Basic load （KN） |
Rated speed(rpm) | Bearing weight | ||||
|---|---|---|---|---|---|---|---|---|
| d inner diameter |
D outer diameter |
B thickness |
Dynamic load Cr |
Static load Cor |
Grease lubrication | Oil lubrication | ||
| QJF1024 | 120 | 180 | 28 | 140 | 200 | 2100 | 2900 | 2.6 |
| QJ1024 | 120 | 180 | 28 | 140 | 200 | 2100 | 2900 | 2.6 |
| QJF322 | 110 | 240 | 50 | 272 | 360 | 1910 | 2550 | 11.9 |
| QJ1022X1 | 110 | 169.5 | 28 | 109 | 140 | 2300 | 3100 | 2.4 |
| QJF320 | 100 | 215 | 47 | 235 | 291 | 2200 | 2900 | 8.9 |
| QJ1020X1 | 100 | 149.5 | 24 | 78 | 99 | 2600 | 3600 | 1.6 |
