Brochure

Mtd. Ball
Bearings
G-253
®
Mounted Ball Bearing Engineering Section
Replacing Existing Sealmaster Material Handling Inserts:
Note: Replacement Sealmaster bearing inserts are intended for use in Sealmaster housings only.
NOTICE
• These bearings are designed for maximum permissible
static misalignment of ± 1 1/2 degrees. Installation, handling
or operation of the bearing in excess of the maximum of ± 1
1/2 degrees can cause reduction in bearing performance and
may lead to equipment failure.
• Do not strike or hammer on any component of the bearing
and/or shaft. Impact can result in damage to the bearing
that may cause reduction in bearing performance and may
lead to equipment failure.
Step 1: Loosen and Remove Housing
Mounting Bolts
Step 2: Remove Bearing from Shaft
Remove the end cover. Loosen the locking mechanism and
slide the bearing off the shaft.
Step 3: Remove the Bearing Insert from the
Housing
Secure housing in a vise. Using a bar placed in the insert bore
as a lever, swing the insert to line up the outer ring with the
load slots and remove insert from load slots.
Step 4: Inspect and Prepare Housing
Housings should be inspected for damage prior to installa-
tion. Wipe housing bore clean as necessary and check that
the lubrication groove and hole are clean and free of debris.
Wetting of the housing bore with oil or grease may be done
to ease installation of bearing insert.
Step 5: Load New Insert
With the bearing housing still in the vise, load the insert in
the following fashion:
a. Place the bearing insert into the housing load slots, posi-
tioning the anti rotation rivet on the outer ring in the load
slot as to not shear it off when the swinging insert into place.
Also, position the outer ring lubrication hole so it will install
in line with the housing lubrication hole.
b. Using a bar placed in the insert bore as a lever, swing
the insert into place within the housing. Insert should have
a snug t in the housing. If insert can be made to swivel
by hand in the housing bore, t is too lose and entire unit
should be replaced. If heavy force is required, t is too tight
and entire unit should be replaced.
c. Ensure alignment of the anti rotation rivet in the load slot
and outer ring lubrication hole in the housing lubrication
hole.
Step 6: Refer to Steps 1 - 6 from the
“Mounting Housed Bearing Units” Section
Pages G-251 to G-252