Rim and face alignment Flashcards
tipes of misalignment
Offset and angular
what is the 4 components to misalignment
1 Vertical angular
2 vertical offset ( parallel) misalignment
3 horizontal angular misalignment
4 Horizontal offset Parallel misalignment.
what is the most common type of misalignment
combination with angular and offset misalignment
what is soft foot
Any foot that is not resting on the base solidly is soft foot
two types of soft foot
Angular or parallel
When loosening the foot to determine soft foot .what reading will display positive and negative dial readings
positive if rear foot lift
negative when front foot lift
On larger machines the dial is placed on a magnetic base on the foot how do i determine soft foot
loosen the nut if if the dial move there is soft foot . This is only for parallel use feeler gauges to determine angular soft foot
when should runout been checked
runout should be checked before alignment is started
what is the most accurate way of measuring soft foot
by using feeler gauges on the four corners
when does the runout not affect the ability to preform alignment
when both shafts rotate together.
will a properly aligned machine clear all vibration
No . runout my still produce vibration due to imbalance
bar sag can only be measured off the machine on a mandrel.
true
end float causes the face reading to be unreadable
so it must be controlled when rotating the shaft during rim and face alignment
where is bar sag determined
on the 6 o clock position as a negative reading on the dial indicator
the sum of the horizontal face readings are always equal to -__________
The sum of the vertical face reading
