To win a bet

[rover]

Large centrifugal backward curve supply air fan. Do we lock in the the driven side bearing obviously closest to pulley, and let the other end float or what????

[referteacher]

Large centrifugal backward curve supply air fan. Do we lock in the the driven side bearing obviously closest to pulley, and let the other end float or what????

The inner race of ALL bearing needs to be locked down securely to shaft. Not doing so will allow the shaft to turn inside the inner race and wear down the shaft in short order.:oops:

[jayguy]

Large centrifugal backward curve supply air fan. Do we lock in the the driven side bearing obviously closest to pulley, and let the other end float or what????

which side of the question are you on...and what is it worth to ya? :cheers:

[NWMech]

In that application the driven end should have the collar.

[Randy S.]

The ABCs of millwrightin', mechancin', and HVAC'n say lock it all down.

[jayguy]

lock it all in...there are bearing systems available if you have a very long shaft and there is a concern of shaft length growth.

do i get to share in the wealth?

[triggerhappy]

This is the way Dodge says to do it.