Wheel Bearing Failure Leads to Multiple Train Derailments

10. Dec, 2010                                       Shandong Obetter Bearing Co., Ltd

Wheel bearing failure resulted in seven train derailments and two trackside fires around New Zealand between October 2007 and October 2008, a Transport Accident Investigation Commission has found.

The commission began its investigation after a train derailed in Huntly in October 2007, and consequently found over the next year 12 express freight trains had wheel bearings which failed.

Seven of the failures resulted in wagons derailing, causing a number of following wagons to derail.

Twice molten metal from the failed wheel bearings started fires in trackside foliage and across adjacent land.
No one was injured but the derailments caused extensive damage to rolling stock.

The commission said it could not conclusively determine the reason for the wheel-bearing failure because the bearings had usually failed catastrophically, destroying the evidence.

It recommended Land Transport New Zealand urgently address the safety issue as the rail network was not equipped with an acoustic bearing monitoring system compatible with current international practices.

Shandong Obetter bearing Company is a leading global supplier in the areas of bearings, mechatronics, services. OBT Group as a high-tech enterprise and professional manufacturer specicalized in ball bearing and roller bearing. we can produce non-standard bearing and machine parts as our customers request. we always follows the principles of "Good Faith, Equality, Cooperation and Win-Win" to cooperate with our customers.
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