Apparatus for greasing rollers of conveyor belt systems

A belt conveyor greasing apparatus for rollers comprising:

• (a) a shaft;
• (b) a roller adapted to support a portion of a conveyor belt, the roller including a radially inwardly facing portion on at least one end of the roller;
• (c) a bearing disposed in said radially inwardly facing portion, said bearing having an inner and an outer race rotatable with respect to each other and having movable bearing members disposed between the inner and outer races for reducing friction when one of the inner and outer races rotates with respect to the other one;
• (d) an annular member operatively disposed on said shaft adjacent to said bearing and fixed with respect to said shaft;
• (e) a first annular seal disposed around the shaft for sealing between the shaft and the annular member;
• (f) a second annular seal for sealing between the roller and said shaft as the roller rotates with respect to the shaft;
• (g) a first grease chamber in the roller between the second annular seal and one end of the bearing;
• (h) a second grease chamber adjacent the other end of the bearing;
• (i) a depression in said shaft, said depression extending from a first end between the first seal member and the other end of said bearing and a second end between the second annular seal member and said bearing, said second end of said depression being in fluid communication with said first grease receiving chamber;
• (j) a passageway in said annular member having a grease supply port on one end thereof and a substantially annular portion on the other end thereof, said annular portion of the passageway being in fluid communication with said first end of the depression in said shaft;
• (k) a grease outlet for the second grease chamber to allow grease to exit therefrom whereby grease can enter the inlet of said passageway, pass into the substantially annular portion of the passageway to said first end of the depression in the shaft, pass out the second end of the depression in the shaft to said first grease receiving chamber, pass through the bearing to said second grease receiving chamber and then out said grease outlet;
• and
• (l) another annular seal which seals between said annular member and the outer race of the bearing and forming a portion of a wall of the second grease receiving chamber;
• wherein said another annular seal is in direct contact with the outer race of the bearing.