Only hubs with gen 2 axles will use radial bearings, if your hub has a gen 1 axle, it will use angular contact bearings.

To determine your gen 2 hub bearing type, the axle must be removed in order to check the bearing spacer.

Axle removal instructions can be found here: Generation 2 axle - TRSr/TRS+/LG1+ rear hub axle install and removal

With the axle removed, attempt to remove the bearing spacer by pulling it from the drive side

All race level hubs will use radial bearings

You can tap it lightly from the non-drive side to aid removal

If the spacer comes out the hub uses angular contact bearings

If the spacer is captured by the bearings and cannot be removed without removing the bearings, then the hub uses radial bearings