Rolling-element bearing with seals and leakage test channel

A rolling-element bearing comprising:

• a first ring assembly and a concentric second ring assembly mounted for rotation relative to the first ring assembly,
• the first ring assembly comprising a first rolling ring having a raceway and a first sealing ring mounted axially to the first rolling ring at a first joint, the first sealing ring supporting a first seal element and a second seal element,
• the second ring assembly comprising a second rolling ring having a raceway and a second sealing ring mounted axially to the second rolling ring at a second joint, and
• a row of rolling elements between the raceway of the first rolling ring and the raceway of the second rolling ring,
• wherein the first seal element includes a first lip in contact with the second sealing ring and the second seal element includes a second lip in contact with the second sealing ring, and
• wherein:
• the first sealing ring includes a first sealing member radially spaced from the first seal element and a first leakage test channel having a first inlet orifice between the first sealing member and the first seal element and an outlet orifice at an external surface of the first ring assembly, and/or
• the second sealing ring includes a second sealing member and a third sealing member and a second leakage test channel having a second inlet orifice between the second sealing member and the third sealing member and an outlet orifice at an external surface of the second ring assembly.