
Rev. Date: 12/20/21
Page 15
Bearings:
Bearings are prelubricated, double-sealed, self aligning ball bearings. They have grease fittings and should be
periodically lubricated at least once a month. The lubrication schedule should be carefully followed. These bearings are
filled with Mobil Mobilith SHC460 grease at the factory (18W suffix). This grease is a lithium-thickened lubricant having
mineral base oil. The useable working temperature is -40 F to +300 F.
Note: It is recommended to check to make
sure the grease that is being used is compatible with the SHC460 grease as the mixing of incompatible
grease can cause lubrication breakdown.
Proper lubrication intervals should be determined based on the observed
condition of the purged lubricants. If the purged lubricants appear to be contaminated, then continue to purge the bearing
until the lubricant is found to be in new condition. If bearings produce noise or heat
(too-hot-to-touch)
, the bearings
should be replaced.
Bearing Replacement:
Remove the four bolts from bearing flange and loosen (2) set screws on bearing hub. Since all set screws are installed
with a medium grade Loctite, a propane hand torch maybe used to assist in removing them. Do not overheat unit, causing
shaft to expand. A bearing puller can be used to remove the bearing. Eliminate any metal burrs from shaft with file and
install new bearings with felt seals. Use a medium grade Loctite on set screws before securing bearing to shaft. (Check
shaft diameter before ordering bearings)
Belt Removal for Replacement:
1. Remove belt guards. (See Illust. K)
2. Loosen 1/2" bolt on idler to relieve belt tension. (See Illust. L)
3. Remove (4) bolts and loosen (2) set screws on back bearing.
(See Illust. K)
4. Remove back bearing and bearing shim.
5. Remove belt from pulleys and pull belt out through opening in
frame. (See Illust. M & N)
Note: Pull top of belt towards chamber
and bottom of belt out opening.
O
O
Belt Guards
Bearing & Bearing Shim
(Illust. K)
Idler Bolt
(Illust. L)
Opening
(Illust. M)
(Illust. N)
Belt