China · Incident & operating records
广州市白云区龙归街“3·3”其他伤害一般事故调查报告
Read record, response & limits
Official incident: in-service wear and inspection failures
An XR400E upper structure separated from its undercarriage after all 48 slewing-bearing bolts fractured. Investigators described accumulated wear during nearly five years of service and failure to inspect and replace worn bolts promptly.
Outcome and response
Official investigation finding
Reading limits
The report does not assign a manufacturing defect. It notes compliant ground slope and no obvious operator violation, while identifying inadequate inspection and site protection.
Original report: equipment identification, scene inspection and cause/responsibility sections
PDF pages 7–9, 11 and 13–15