Roller bearing assembly, and method of grounding a perforating gun assembly

A bearing member assembly, comprising:

• a tubular sub having a first end, and a second end opposite the first end, and connection threads placed at each of the first and second ends;
• an internal bore within the tubular sub extending from the first end to the second end, and a tapered shoulder residing along the internal bore at the second end, with the tapered shoulder defining an angle relative to a central axis of the internal bore;
• a contact pin residing within the internal bore of the tubular sub, the contact pin being in electrical communication with a signal line and configured to receive a detonation signal from the signal line;
• and
• a bearing member comprising:
• a tubular support body having an inner diameter forming a bore, and an outer diameter forming a race;
• a plurality of roller bearings disposed along the race at an angle that corresponds with the angle of the tapered shoulder of the tubular sub;
• and
• a bearing housing configured to hold the plurality of roller bearings against the race, serving as a cage.