Bearing for a shed-forming machine or a system for transmitting movement to the frames of a loom, which has an inner ring, an outer ring and rolling elements. The inner ring is centered on a major axis, has two lateral surfaces normal to the major axis, and defines a circular peripheral path centered on the major axis. The outer ring defines an inner path, which is circular and centered on the main axis. The rolling elements are interposed, radially with respect to the main axis, between the peripheral ring and the inner ring, to guide the outer ring in rotation relative to the inner ring around the main axis. The inner ring has at least one slot, opening onto the two lateral surfaces, extending opposite a portion of the peripheral path, and forms a bridge of material between the slot and the peripheral path.

A roller assembly having a central axis can comprise a roller having an outer surface and defining an inner bore. The apparatus can further comprise a bushing comprising a sleeve having an outer surface and defining an inner bore. The inner bore of the sleeve can have an operative circumference. The sleeve comprises a bladder that is configured to expand radially upon receipt of a fluid to reduce the operative circumference of the inner bore. The bushing can further comprise a flange extending radially outwardly from the sleeve. The flange defines a vessel containing fluid therein. The vessel is in fluid communication with the bladder of the sleeve. The bushing comprises an actuator that is configured to cause the fluid from the vessel of the flange to flow into the bladder of the sleeve. An alignment feature can be configured to rotationally position the roller relative to the bushing.

A bearing unit having a stationary radially outer ring, a radially inner ring rotatable about a central rotation axis (X) of the bearing unit is provided with at least one raceway and, in an end portion thereof, with at least two circular sector segments, at least one row of rolling elements interposed between the radially outer ring and the radially inner ring, and a concentric collar for clamping the radially inner ring on a rotating shaft, where an induction-hardening heat treatment is applied to a portion of the radially inner ring that overlaps with at least a portion of the at least one raceway.

A loom includes a rotary shaft bridged to a pair of side frames with being supported via bearings each provided in corresponding one of the side frames, the rotary shaft includes: solid shaft-shaped shaft parts supported by corresponding one of the side frames: and a hollow pipe-shaped main body part located between the shaft parts. The loom includes a bearing structure provided in at least one of existence ranges of the shaft parts between the side frames with respect to an axis line direction of the rotary shaft. The bearing structure includes: a rolling bearing into which one of the shaft parts is fitted; and a support body configured to support the rolling bearing.

A shaft assembly has a shaft and a journal bearing that is fixedly coupled to the shaft so that rotation of the shaft causes corresponding rotation of the journal bearing. A bearing race has an inner surface that defines a cylindrical bore and a lubrication groove that extends radially outward from the cylindrical bore. The journal bearing is rotatably disposed within the cylindrical bore of the bearing race.

In many continuously webbed machines, media is fed through the machine with rollers mounted to one or more rotating shafts. These shafts may be supported on each end with a cylindrical journal bearing. The rollers move at the same rate as the media to maintain traction with the media to control media position as it moves the media from one process to another through the sequence of processes in the webbed machine.

A shaft assembly has a shaft and a journal bearing that is fixedly coupled to the shaft so that rotation of the shaft causes corresponding rotation of the journal bearing. A bearing race has an inner surface that defines a cylindrical bore and a lubrication groove that extends radially outward from the cylindrical bore. The journal bearing is rotatably disposed within the cylindrical bore of the bearing race.

A rolling-element bearing includes an outer ring, an inner ring having a bore, a bearing interior between by the outer ring and the inner ring, a plurality of rolling elements in the bearing interior, and a cover attached to the rolling-element bearing such that it extends along an end face of the rolling-element bearing and covers the bearing interior, the inner ring, and the bore.

A rolling-element bearing includes an outer ring, an inner ring having a bore, a bearing interior between by the outer ring and the inner ring, a plurality of rolling elements in the bearing interior, and a cover attached to the rolling-element bearing such that it extends along an end face of the rolling-element bearing and covers the bearing interior, the inner ring, and the bore.

Bearing (25) for a shed-forming machine or a system for transmitting movement to the frames of a loom, which comprises an inner ring (72), an outer ring (74) and rolling elements (76). The inner ring is centered on a major axis (A72), has two lateral surfaces normal to the major axis, and defines a circular peripheral ring (80) centered on the major axis. The outer ring (74) defines an inner ring (82), which is circular and centered on the main axis. The rolling elements (76) are interposed, radially with respect to the main axis, between the peripheral ring and the inner ring, so as to guide the outer ring in rotation relative to the inner ring around the main axis. The inner ring (72) comprises at least one slot (90), opening onto the two lateral surfaces, extending opposite a portion of the peripheral ring (80), and forms a bridge of material (94) between the slot and the peripheral ring. The material bridge (94) extends over an angular sector (99) of the inner ring, is centered on the main axis (A72) of the bearing and has a vertex angle (α1) greater than or equal to the vertex angle (β2) of an angular sector occupied by two rolling elements (76), preferably greater than or equal to the vertex angle (β5) of an angular sector occupied by five rolling elements, preferably greater than or equal to the vertex angle (β9) of an angular sector occupied by nine rolling elements, more preferably greater than or equal the vertex angle (β13) of an angular sector occupied by thirteen rolling elements. The inner ring (72) further comprises at least one hole (88) for fixing the bearing (25).