The failures on a 345D are similar to smaller models but are often accelerated due to the heavier loads and higher forces involved.
Excessive Play or Looseness in the Swing
Causes:
Worn Gear or Raceways: Over time, the contact surfaces between the balls/rollers and the raceways wear down, increasing internal clearance.
Improper Pre-load/Adjustment: The initial clearance may not be set correctly, or it may have changed over time.
Loose or Stretched Mounting Bolts: The massive forces can cause bolts to loosen or stretch if not torqued correctly or re-checked periodically.
This 227-6052 slewing bearing is used for 345D excavator.
Related part number:
227-6037
227-6053
