Model: NOV 30154362 Shield Bearing Assembly
Material: Alloy steel bearing with integrated mud shield
Fit equipment: NOV Varco TDS-9SA / TDS-11SA top drive main spindle assembly
Function: Radial auxiliary support & contaminant barrier for main shaft bearing
Operating environment: Heavy vibration, anti-mud, onshore & offshore drilling rig
Feature: Integral mud shield prevents abrasive solids entering main bearing housing
Maintenance: Inspect clearance and seal integrity during major top drive overhaul
