This bearing assembly supports a rotating shaft within the cleaning unit of a combine harvester. It is housed in a flanged or pillow-block casing that bolts directly to the machine frame, allowing the shaft to spin freely while maintaining alignment with the sieve or fan drive. A worn bearing produces play in the shaft, which leads to vibration, misalignment of the drive belt or chain, and reduced cleaning efficiency. The INA-manufactured unit uses the same housing geometry and internal clearance as the original assembly, so it seats into the existing mounting holes without modification. On installation, ensure the housing bolts are torqued to specification and that the shaft rotates freely before reconnecting the drive.