From the "Rolling Bearings
Handbook and Troubleshooting Guide"
When greasing a new unsealed bearing at installation,
pack the grease in from both sides until all of
the cavity is filled. If a split pillow block is
used, fill the bottom half of the housing half full.
A sealed bearing is generally packed 1/3 to 1/2
full of grease. Any more grease will cause the bearing
to run somewhat hot, and the excess grease will
be purged out of the seal contact area. When greasing
bearings, always make sure to wipe off the grease
fitting prior to injecting grease.
| Q
& A: Advice for Measuring Filter Life |
"We have a filter that appears to
have been in service for nearly two years without
any indication of blocking, is this normal?"
While contaminant ingression varies according to environmental
and production/maintenance activity, some filter manufacturers
specify a life of six months. It is generally a good
strategy to take an upstream and downstream particle
count to ascertain if the filter is still working
properly; if not, replace the element.
Consider the maintenance history and
try to establish an average life for previous elements
as this will give some indication if two years is
abnormal.
However, there are a number of ways
in which the filter may fail without tripping the
indicator, and this may lead the unwary to believe
the filter is good value. Without a particle count
program, it is almost impossible to determine a failed
filter. Such failures as a collapsed element, split
pleat, poor adhesion on the seam, a sticking by-pass
valve or even a faulty indicator are typically not
detectable without a particle count program to monitor
changing contaminant levels.
