Oil lubricated mechanisms generally incorporate a combination of seals.

A labyrinth grease seal can be used to keep out contamination and a lip TYPE OIL SEAL to retain the OIL. Another method is the use of FLINGER RINGS instead of labyrinth grease seals.

Note: It is extremely important to maintain the oil seal as even a SMALL LEAK --- will EVENTUALLY DRAIN THE OIL AND CAUSE BEARING FAILURE. The seals are the first thing to check at the sign of an oil leak. The bearing lubricant reservoir should be VENTED to the atmosphere to PREVENT SEAL FAILURE ....

Your vibrating equipment manufacturer, along with the bearing and lubrication manufacturers have spend considerable time and effort developing the proper components and lubricants for the extreme duty of vibrating screens. These lubricants and the recommended schedules are outlined in the screen manufacturers maintenance manuals AND SHOULD BE CLOSELY FOLLOWED.

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Couple of comments from infield observations:

1. If excess OIL is noticed to be originating from the 12 o'clock position of the brg housing.......this indicates OVERFILL......the oil will SPEW out of the BREATHER upon startup and expansion. FIX - FILL OIL TO RECOMMENDED LEVEL, USUALLY HALF WAY UP THE SIGHT GLASS. make SURE THE sight glass does not get moved!

2. If oil leaks from the SIX OCLOCK position........indicates a damaged OIL SEAL.......rubber lip is NOT tight against the shaft position............ EQUALS.....LEAKAGE. PROPER FIX: replace oil seal with new. QUICK, TEMP FIX: If part is not readily available..........pull seal off shaft........turn to backside.....disengage stainless steel snap ring.....pull female end out of male end. SNIP 1/16" shorter, reinstall male into female end, REINSTALL SEAL. should be tighter to shaft now. ORDER NEW SEAL......install next time it leaks.

3. RULE NUMBER ONE: KEEP BREATHERS BLOWN OUT. IF THEY PLUG AND THEY DO FREQUENTLY....you create pressure buildup inside housing, heat buildup inside housing......Heat breaks down viscosity of OIL....lose protective qualities.....bearings fail.

BREATHERS should be a mushroom head style vs 3 pin prick holes.....which clog very easily. THINK ABOUT IT......for the cost of throwing out breathers semi frequently......you could lose your drive assembly.......at mega bucks.....and lost production.

Any questions from the floor are always welcomed.

GEORGE BAKER ■