Tooth contact pattern/area Inspection at slew bearings

During the replacement of slew bearing (unloader cranes), below inspections are crucial

  • backlash (usually 0.3 to 0.4mm depending to the manufacturer) and
  • tooth contact pattern/area.

Checking contact pattern/area shows how the bearing and pinion are engaging. Fine tuning adjustment is to be made based on the tooth pattern findings.

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