A cage for a ball bearing having a meandering wire which, extending around an axis of rotation (X) of the bearing of the ball type, defines a plurality of seats for receiving respective balls of the ball-type bearing. Further, the cage being also provided with a separating element between each pair of adjacent seats and, for each seat, with three points (P) of contact between balls and meandering wire for retaining the balls inside the associated seat. The separating element being formed by the same meandering wire and the points (P) of contact lying on the same meandering wire.

A cage for a ball bearing having a meandering wire which, extending around an axis of rotation (X) of the bearing of the ball type, defines a plurality of seats for receiving respective balls of the ball-type bearing. Further, the cage being also provided with a separating element between each pair of adjacent seats and, for each seat, with three points (P) of contact between balls and meandering wire for retaining the balls inside the associated seat. The separating element being formed by the same meandering wire and the points (P) of contact lying on the same meandering wire.

The invention relates to a process for producing a rolling bearing cage, in particular for large rolling bearings, wherein a steel strip with openings for in each case one rolling body is provided and bent to form a ring, wherein, for thermal coating with a thermoplastic powder, the ring is then heated to a temperature above a minimum coating temperature, wherein the ring is then dipped into a fluidized bed comprising the thermoplastic powder, wherein, during the residence time of the ring in the fluidized bed, plastic powder adheres to the ring, melts and forms a continuous coating, and wherein the ring is removed from the fluidized bed after the coating. The invention also relates to an apparatus for carrying out the process.

A cage and ball sub-assembly, including: an axis of rotation; a cylindrical plastic cage including a circumferentially disposed cage surface, a plurality of indentations extending from the circumferentially disposed cage surface into the cylindrical plastic cage in a first radial direction, and a plurality of pockets, each pocket circumferentially disposed between a respective pair of indentations included in the plurality of indentations; a metal insert including a plurality of support tabs, each support tab embedded in the cylindrical plastic cage, and including a circumferentially disposed portion and a flange extending from the circumferentially disposed portion in a second radial direction; and a plurality of balls disposed within the plurality of pockets. A circular arc, centered on the axis of rotation and orthogonal to the axis of rotation, passes through in sequence: a ball; the cylindrical plastic cage; the first flange of a support tab; and the cylindrical plastic cage.

A bearing cage for retaining rolling elements of a rolling element bearing. The bearing cage is made of a sheet metal element. The cage provides at least one cage pocket configured to receive at least one rolling element. The at least one cage pocket is formed by two abutting cage bars that extend axially between a first and a second axially displaced ring element. The bearing cage is made of a one-piece sheet metal element and the first and the second ring element is undivided in its circumference without any joints or connections for joining an interrupted ring element. Furthermore, a rolling element bearing and a method of producing the bearing cage is provided.

Provided is a rolling guide device which is capable of preventing uneven wear of a holding belt by alleviating a tensile force that acts on the holding belt when the holding belt circulates in an endless circulation path together with rolling elements. The endless circulation path has a guide groove configured to guide movement of the holding belt in the endless circulation path. A condition of t.sub.max< is satisfied, where: t.sub.max represents a maximum clearance between both end portions of the holding belt which are opposed to each other in the endless circulation path; is expressed by $=2{}_0^{\frac{}{2}}\sqrt{{\left(a\sin \right)}^2+{\left(c\cos \right)}^2}d$

Provided is a rolling guide device which is capable of preventing uneven wear of a holding belt by alleviating a tensile force that acts on the holding belt when the holding belt circulates in an endless circulation path together with rolling elements. The endless circulation path has a guide groove configured to guide movement of the holding belt in the endless circulation path. A condition of t.sub.max< is satisfied, where: t.sub.max represents a maximum clearance between both end portions of the holding belt which are opposed to each other in the endless circulation path; is expressed by

[00001]$=2.Math.{}_0^{\frac{}{2}}.Math.\sqrt{{\left(a.Math..Math.\sin .Math..Math.\right)}^2+{\left(c.Math..Math.\cos .Math..Math.\right)}^2}.Math.d.Math..Math.-2.Math.{}_0^{\frac{}{2}}.Math.\sqrt{{\left(c.Math..Math.\sin .Math..Math.\right)}^2+{\left(b.Math..Math.\cos .Math..Math.\right)}^2}.Math.d.Math..Math.;$

2c represents an interval between the holding belt in a load path and the holding belt i

A cage (5) for separating rolling bodies (2) for a bearing (1), particularly for a timepiece bearing, the cage having first openings (50) for receiving rolling bodies and at least one first contact zone (56) intended to come into contact with a bearing ring and having at least one first hollow formation (52).

A cage (5) for separating rolling bodies (2) for a bearing (1), particularly for a timepiece bearing, the cage having first openings (50) for receiving rolling bodies and at least one first contact zone (56) intended to come into contact with a bearing ring and having at least one first hollow formation (52).

A ball bearing that provides an inner race, an outer race, at least one row of balls and at least one cage for spacing apart the row of balls and having a wire extending inside a rolling space delimited by the outer race and the inner race. The bearing also provides at least one seal that includes coupling means for fastening to the wire of the cage.