초록 ▼

A slew ring bearing for coupling the superstructure of a large piece of heavy equipment to the base having an inner ring attachable to the underside of the superstructure and an outer ring having gear teeth on its outer cylindrical surface concentric with the inner ring and attachable to a stationar

A slew ring bearing for coupling the superstructure of a large piece of heavy equipment to the base having an inner ring attachable to the underside of the superstructure and an outer ring having gear teeth on its outer cylindrical surface concentric with the inner ring and attachable to a stationary base frame. An upper and lower V-groove are found in an outer cylindrical face of the inner ring. Corresponding upper and lower V-grooves are formed on an inner cylindrical face of the outer ring positioned opposite corresponding upper and lower V-grooves on the inner ring so as to form in combination therewith associated upper and lower roller bearing raceways. A plurality of rolling elements are positioned in the upper and lower raceways so as to permit rotation of the inner ring relative to the outer ring. A plurality of bronze spacers are positioned with one spacer between each pair of rollers.

대표청구항 ▼

A ring bearing, comprising: (a) an inner ring; (b) an outer ring concentric with said inner ring; (c) upper and lower raceways formed around the interface between said inner and outer rings; (d) a plurality of rollers positioned in said upper and lower raceways so as to permit rotation of said inner

A ring bearing, comprising: (a) an inner ring; (b) an outer ring concentric with said inner ring; (c) upper and lower raceways formed around the interface between said inner and outer rings; (d) a plurality of rollers positioned in said upper and lower raceways so as to permit rotation of said inner ring relative to said outer ring; and (e) an inspection port formed in one of said inner and outer rings radially directed and intercepting one of said upper and lower raceways. A slew ring bearing for rotatably supporting a large operating superstructure of an item of heavy equipment over a base frame, comprising: (a) an inner ring; (b) an outer ring concentric with said inner ring; (c) an upper and lower V-groove formed in an outer cylindrical face of said inner ring and corresponding upper and lower V-grooves formed on an inner cylindrical face of said outer ring positioned opposite corresponding upper and lower V-grooves on said inner ring so as to form in combination therewith associated upper and lower roller raceways; (d) a plurality of rollers positioned in said upper and lower raceways rotatable so as to permit rotation of said outer ring relative to said inner ring; (e) a pair of inspection ports each radially directed so as to intersect a respective one of said upper and lower raceways; and (f) a pair of plugs each matingly slidably insertable in a corresponding one of said inspection ports and having an end which forms a continuous surface with said raceway when fully inserted.