shipping a big sleeve bearing motor

[Tmoose]

We have to ship a BIG sleeve bearing motor.
The OEM manual talks about saving the "shaft locking device," which of course is long gone.

Typically does the locking device limit shaft rotation, or provide radial preload, forcing the shaft against the bearing surface?

Thanks,

Dan T

 

[MikeHalloran]

Gravity provides some radial preload. It would make sense to prevent incidental rotation of the shaft so as to not run the bearings dry.



Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA

 

[edison123]

Shat lock is to arrest the axial and vertical shaft movement within the bearing during transport to prevent babbitt damage.


* Life is licking honey off a thorn *

 

[electricpete]

In the unlikely event you have not seen the threads on the same subject on the other board, here are links

http://maintenanceforums.com/eve/ub...51089011&m=3761076431&r=6061096431#6061096431

http://maintenanceforums.com/eve/ubb.x/a/tpc/f/3751089011/m/3251048231

=====================================
Eng-tips forums: The best place on the web for engineering discussions.

 

[Mendit]

Ideally the shaft locking device should hold the shaft in the mid point between the bearing shoulders. Often the rotor is blocked between the fitted coupling hub and the bearing end housing. This works but, if your motor has to travel over lumpy roads the blocks often fall out and leave it unprotected.

If the rotor is axial (in line with the truck) the forces against the shaft lock are high should the truck have to hit the brakes. I have also heard it said that the motor sould be sideways on the truck to prevent just this, but if the truck makes a wide sweeping turn at high speed the forces are on the rotor to travel outwards.

To be safe an angle iron bracket section equal to 1/2 the diameter of the shaft(minium 2") and 3/8 section. be placed across the end of the shaft and bolted to the holes in the coupling or shaft end. Then 2 long threaded rods with a tie plates to secure behind 2 endbracket mounting screws. You can adjust the rotor position with 2 jam nuts on the rod.