Preventing premature bearing failure saves costly repairs and down time
Tuesday, June 22, 2010 at 04:46PM ProTech labyrinth seals from Daemar stand up to "torture tests"
Labyrinth seals were developed to address these problems, but they have performance weaknesses. Many labyrinth seals are costly and complicated, and they also allow some contamination to reach lubricants. The use of metal in labyrinth seals results in costly designs, close tolerances, and difficult installations. Some manufactures offer two-piece, non-unitized labyrinth seals. However with one exception, unitized labyrinth seals have at least three components and up to four O-Rings.
JM Clipper uniquely designed ProTech labyrinth seals to protect bearings with zero lubricant leakage and total exclusion of contaminants. Based on a simple, unitized, two-piece PTFE design with only two O-Rings, easy-to-install ProTech have fewer working components, cost less, require no lubrication and have been rigorously tested to exclude contaminants and prevent oil leakage.
Oil Leakage Test
One hundred-hour tests were conducted with severe oil splash.
Water Exclusion Test
Using water at pressures of 30 to 62 psi, nozzles sprayed each seal from
a distance of 3” in both static mode and while the shafts rotated at various speeds up to 3525 rpm. The nozzles tried to force water past the seal for nearly two hours.
Dust Exclusion Test
In an enclosed chamber containing fine dust and sand, which was vigorously agitated with the chamber attached to the outside of each seal area, the equipment operated at speeds up to 3525 rpm for 70 hours in an environment that was literally a dense dust storm.
ProTech was the only seal that passed all three torture tests.
This material is adapted from Daemar Shaft Seals Catalogue available at www.daemar.com
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