Non-contact labyrinth seal assembly and method of construction thereof

摘要

A labyrinth seal assembly, bearing assembly therewith, and method of construction thereof, has an outer rigid carrier and an inner sleeve. The carrier has an outer cylindrical flange and a radially inwardly extending leg and the sleeve has a cylindrical wall and a radially outwardly extending flange. A seal body is attached to at least one of the leg and the flange, wherein a labyrinth passage extends between the seal body and the sleeve, from an air side of the assembly to an oil side of the assembly, during normal use of the assembly.

主权项

1. A seal assembly, comprising:
an outer rigid carrier having a generally cylindrical outer flange extending axially relative to a central axis of said assembly with a leg extending radially inwardly from said outer flange toward said central axis; a seal body attached to said leg, said seal body having a radially outward lip and radially inward lip, said lips extending axially from said leg toward an air side of said assembly with said radially outward lip diverging outwardly from said central axis to provide a first annular channel between said lips and a second annular channel between said radially outward lip and said leg, said first annular channel facing axially toward said air side and said second annular channel facing radially outwardly from said central axis; a sleeve having an axially extending cylindrical wall with an annular first flange extending radially outwardly from said cylindrical wall, said first flange having an annular projection extending axially toward said first annular channel; and a labyrinth passage extending along said radially outward lip, continuoulsly from said radially outward lip, to an oil side of said assembly.