Rolling bearing
View Patent ↗A rolling bearing comprising a rolling bearing cage having a plurality of rolling element pockets arranged in at least one row to receive at least one row of rolling elements, two lateral rings and a plurality of crosspieces connecting the two lateral rings, such that the plurality of rolling element pockets are formed between the plurality of crosspieces, and at least one empty pocket. The rolling bearing cage includes fewer rolling elements in the at least one row than the number of rolling element pockets, such that the at least one empty pocket does not receive a rolling element. A method for producing a rolling bearing cage is also provided.
1. A rolling bearing with a rolling bearing cage comprising:
a plurality of rolling element pockets arranged in at least one row and configured to receive at least one row of rolling elements;
two lateral rings and a plurality of crosspieces connecting the two lateral rings, such that the plurality of rolling element pockets are formed between the plurality of crosspieces; and
at least one empty pocket, the at least one empty pocket having straight side walls extending from a radially inner side of the cage to a radially outer side of the cage,
wherein the side walls are inclined at an angle relative to a radial axis of the cage, the radial axis extending from the center of the cage through the empty pocket,
wherein the rolling bearing cage includes fewer rolling elements in the at least one row than the number of rolling element pockets, such that the at least one empty pocket does not receive a rolling element, and
each wherein rolling element pocket of the plurality of rolling element pockets includes an undercut to secure the rolling element received within the rolling element pocket, the undercut being axially provided along a sidewall of the rolling element pocket.
2. A rolling bearing according to claim 1 , wherein the at least one empty pocket has a different shape than the plurality of rolling element pockets.
3. A rolling bearing according to claim 2 , wherein the at least one empty pocket is shaped so as to create a conveying or pumping action in at least one direction of rotation.
4. A rolling bearing according to claim 1 , wherein the at least one empty pocket is designed to receive and/or distribute lubricant.
5. A rolling bearing according to claim 1 , wherein the center line of the at least one empty pocket forms an angle with a radius extending from the longitudinal axis of the cage.
6. A rolling bearing according to claim 1 , wherein the at least one empty pocket is designed without undercuts.
7. A rolling bearing according to claim 1 , wherein the plurality of rolling element pockets are designed to receive bearing needles.
8. A method for producing a rolling bearing cage according to claim 1 , wherein the plurality of rolling element pockets are pre-machined in a first step using a cylindrical milling cutter, and the at least one empty pocket is finish processed using the same or a different cylindrical milling cutter.
9. A method according to claim 8 , wherein the undercuts in the plurality of rolling element pockets are produced with a profiled cutter.
10. A method according to claim 9 , wherein the plurality of rolling pockets are radially produced using the cylindrical milling cutter, and the at least one empty pocket is produced with an offset using the same or a different cylindrical milling cutter.
11. A method according to claim 10 , wherein the offset is provided by moving the cylindrical milling cutter or the rolling bearing cage crosswise with respect to the longitudinal axis of the cylindrical milling cutter.