Z-508731.01.SKL bearings ( 260 mm x 370 mm x 92 mm) have the advantages of It can withstand radial and bidirectional axial loads simultaneously, has a compact structure, good rigidity, and is easy to install, and are therefore widely used in the Automotive wheel hub units, pumps, compressors, industrial gearboxes, and machine tool spindles.

| Part Number | Z-508731.01.SKL |
| Bearing Type | Angular contact ball bearings, Double row |
| Series | Z5-..SKL |
| Contact angle - α [°] | 40 |
| Rows NO. | single |
| m Weight [kg] | 30.5 |
| Reference From | FAG Z-508731.01.SKL |
| Dimensions | |
| d φ Inside [inch] | 10.236 |
| D Φ Outside [inch] | 14.567 |
| B Width [inch] | 3.622 |
| r(min.) [inch] | 0.083 |
| r1(min.) [inch] | 0.083 |
| D1 [inch] | 13.720 |
| d1 [inch] | 12.008 |
| a [inch] | 12.205 |
| Performance | |
| Cr Radial Dynamic [N] | 389990 |
| C0r Radial static [N] | 694964 |
| Cur Radial Fatigue [N] | 22193 |
| nG Limiting speed (oil) [r/min] | 1465 |
| Mounting dimensions | |
| da(min.) [inch] | 10.630 |
| Da(max.) [inch] | 14.154 |
| ra(max.) [inch] | 0.083 |
| ra1(max.) [inch] | 0.083 |
The Z-508731.01.SKL Double-row angular contact ball bearings primarily consist of an integral inner ring (or double-half inner ring), an integral outer ring, two rows of balls, and a cage. The contact angle is typically 25°, 30°, or 35°, with the two rows of balls arranged back-to-back, providing bidirectional axial load capacity.
A single bearing can withstand both radial and bidirectional axial loads, eliminating the need for paired installation. They offer high axial rigidity and excellent resistance to overturning moments, making them suitable for handling instantaneous overloads. The integral design simplifies installation, saves space, and is widely used in applications requiring compact designs.















