Abstract: A bearing unit comprising rolling elements, housed in a radially inner mounting seat of a casing. The bearing unit includes a radially outer and stationary coated ring provided with a metal ring and a liner of elastomeric material integral with a radially outer surface of the metal ring, a radially inner ring, which is rotatable with respect to an axis of rotation (X), and a row of rolling elements interposed between the coated ring and the radially inner ring. The elastomeric material of the liner is a vulcanized thermoplastic material. The liner is co-molded onto the radially outer surface of the metal ring and may include a cylindrical body and at least two annular protuberances which fit inside corresponding anchoring grooves formed on the surface of the metal ring.

Abstract: A bearing unit is disclosed, which includes a new labyrinth sealing device designed for use in the ventilation industry that prevents entry of contaminants therein. The sealing device according to the present disclosure provides a “contactless” sealing device, i.e. one without contacting elements (for example elastomer lips); and a bearing unit with a low frictional torque, due only to the internal geometry and the efficiency of the lubricant, but certainly without any contribution from the sealing devices. The sealing devices comprises a plurality of shields, and wherein the combination and structural orientation of these shields creates a long, narrow labyrinth L with many changes in direction, and therefore a path for external contaminants with significant head loss. Consequently, any contaminants that make into the bearing unit, passing through the entire labyrinth L, will be negligible.

Abstract: A bearing unit for a marble cutting machine, comprising a radially outer ring, rotatable about an axis of rotation (X) of the bearing unit and provided with a radially outer flange portion; a stationary radially inner ring having a raceway and a through hole; a row of rolling bodies interposed between the radially outer ring and the radially inner ring; a seat formed in the radially inner ring and shaped as a portion of a circular crown; and a sensor fit in the seat, wherein a ratio between an internal diameter (D) of the through hole and an axial thickness (t) of the radially inner ring is between 6.7 and 11.1.

Abstract: A bearing unit with rolling bodies for use in the food and beverage industry, for example. The bearing unit may have a high resistance to wear and to corrosion and may have a radially outer ring, stationary, a radially inner ring, rotatable with respect to an axis of rotation (X), and a sealing and protection device mounted on the radially inner ring and on opposite sides of the radially outer ring, both to protect the radially outer ring from the action of external contaminants and to prevent any such external contaminants from getting into a gap between the radially outer ring and the radially inner ring. The bearing unit may further have protective layer being arranged in contact with the radially inner ring, and being made of composite polymeric material to isolate and protect the radially inner ring from external contaminants.

Abstract: A support assembly for moving shafts, comprising a bearing unit positioned in a casing, and a cover for fluid sealing the casing. The support assembly comprises double level of protection provided by two distinct sealing devices that keep the bearing unit protected from washing liquid even in the most demanding conditions of use. The better sealing configuration aids in overall better sealing of the bearing unit; greater resistance to contaminants; and improving the sealing performance of the whole support assembly.

Abstract: A bearing unit for a marble cutting machine has a radially outer ring, rotatable with respect to an axis of rotation (X) and is provided with a radially outer flange portion. Additionally, the bearing unit is provided with a stationary radially inner ring with a through hole in which the ratio between a dimension of an internal diameter (D) of the through hole and a dimension of the axial thickness (T) of the radially inner ring is between about 6.7 and about 11.1. A row of rolling bodies is interposed between the radially outer ring and the radially inner ring. A sealing shield is made of composite material and interposed between the radially inner ring and the radially outer ring, rotatable with respect to the rotation axis (X) and steadily anchored to the radially outer ring. The shield is provided with a sensor molded in it.

Abstract: A modular tool (10) for measuring the disassembly torques of a metal shield (36) of a seal (35) for a bearing unit (30). The tool (10) has a torque gauge (20) equipped with a hexagonal key (22). A base element (40) is rotationally integral with the torque gauge (20). A modular element (50) is rotationally integral with the base element (40) and with the shield (36) of the bearing unit (30). The tool includes a support platform (6) for the bearing unit (30). The base element (40) is invariable with respect to the size of the bearing unit (30). The modular element (50) has a variable size according to the size of the bearing unit (30).

Abstract: A pinion bearing unit (10) has a pinion (20) with a cylindrical and radially internal seat (21), and a bearing unit (30) housed inside the seat (21). The pinion (20) has at least one pair of fins (40, 40?). Each of the fins being arranged on a respective outer annular wall (22, 22?) of the pinion (20) and extending axially on opposite sides of the seat (21) in order to be deflected by 90°, abutting the bearing unit (30), such that the bearing unit (30) is locked axially inside the seat (21).

Abstract: A bearing unit (10) having an inner ring (20) including, for each side (L) of the bearing unit (10), a shaped groove (23). The bearing unit has an outer ring (30) defining a cylindrical gap (11) with the inner ring. A plurality of rolling elements (40) are disposed inside the gap. A sealing device (50) is mounted on both of the sides of the bearing unit to protect the gap from contaminants and pollutants, and to prevent lubricant inside the gap from leaking out. The sealing device having, for each side, two sealing lips (54) (55) disposed inside the groove, a flexible support arm (56) for the two sealing lips, and an intrinsic control element (100) to control the bending of the arm to control flexibility of the arm and a friction force that a contacting sealing lip (54) exerts on the inner ring.

Abstract: A thin section bearing unit (10) for multiwire machines. The bearing unit has a central axis (A) of rotation, an inner ring (20), and a flanged rotatable outer ring (30). Defined between the inner and outer rings is a cylindrical cavity (90) for respective rolling elements (40). The inner ring (20) has an outer raceway (22) with an intermediate circumferential groove (23) containing lubricating grease for keeping the raceway (22) lubricated. The bearing unit (10) also has a hydraulic network (60) for distributing the lubricating grease for lubricating the cavity (90). The hydraulic network (60) including at least one axial duct (61) passing through the inner ring (20) and a related radial duct (62) formed in the inner ring (20) between the duct (61) and the circumferential groove (23) of the outer raceway (22).

Abstract: A bearing unit (10) for adverse operating conditions. The bearing unit has an axis (X), outer and inner rings (20, 30), and a sealing assembly (50). The inner ring has two sliding surfaces (32) arranged axially on opposite sides of an outer raceway (31). The sealing assembly is arranged on both sides (L) of the outer ring to prevent contaminant entry. The sealing assembly has, on each side, an annular elastic gasket (70) with sealing lips (71) facing the inner ring and in sliding contact with the sliding surface (32) of the associated side. The sealing lips (71) have annular contact edges (74) with diameters decreasing in the axial direction towards the outside of the bearing unit. The sliding surfaces (32) are inclined with respect to the axis (X) in a decreasing manner from the outer raceway (31) for adjustment of the radial contact pressure of the lips (71).

Abstract: A bearing unit may have a radially outer ring, a radially inner ring, a row of rolling bodies interposed between the radially outer ring and the radially inner ring, a casing inside which the rings of the bearing unit are housed. The bearing unit may further have a sealing device and a disc-like element for protecting the sealing device, made as one piece, entirely of plastic or composite material, axially external with respect to the sealing device, stably anchored in a seat of the casing and having a radial distance (d2) between a radially internal surface of the disc-like element and the radially inner ring ranging between 0.75 mm and 0.95 mm so as to block large-size external contaminants, without making contact with the radially inner ring.

Abstract: A sealing device for a sleeve of washing machines, comprising a first, stationary, annular screen, and a second, rotatable, annular screen. The first annular screen includes a first cylindrical mounting portion and a first flange portion; and the second annular screen includes a second cylindrical mounting portion and a second flange portion. The sealing device is characterized in that both the first and the second annular screens include the same number of non-contacting sealing lips, which are similar to each other and contained axially between the first and second flange portions, in radially alternating positions axially arranged one above the other, so as to define a sealing labyrinth (L). The first and second annular screens define between them a discharge chamber (C1) and an obstruction chamber (C2) which are arranged along the sealing labyrinth (L), substantially at opposite ends of the said sealing labyrinth (L).

Abstract: A bearing unit (10, 10?) has a radially outer ring (31). The outer ring (31) is rotatable with respect to an axis of rotation (X) and is provided with a radially inner raceway (31r). A stationary radially inner ring (33) is provided with a radially outer raceway (33r). A row (132) of rolling bodies (32) is interposed between the radially outer ring (31) and the radially inner ring (33). Each rolling body (32) has three contact points (P1, P2, P3) with the raceways (31r, 33r) of the radially outer ring (31) and, respectively, the radially inner ring (33).

Abstract: 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.

Abstract: A support assembly (10) for a rotatable element. The support assembly (10) has a frame (20) provided with a mounting seat (20a) and a bearing unit (30) arranged inside the mounting seat. The bearing unit (30) is provided with a stationary radially outer ring (31) delimited radially on the outside by a respective spherical surface (31?). The frame (20) is provided with a liner (40) of elastomeric material, co-molded on the seat (20a). The liner (40) is radially interposed between the seat (20a) of the frame (20) and the spherical surface (31?) of the radially outer ring (31).

Abstract: A bearing unit (10) has a radially outer ring (31), a radially inner ring (33), an eccentric locking collar (40), a row of rolling bodies (32), and a sealing device (50). The sealing device (50) is arranged on the same side as the locking collar (40) and is interposed between the radially inner ring (33), the radially outer ring (31) and the locking collar (40). The sealing device (50) includes a metal shield (55) stably connected to the radially outer ring (31), and an elastomeric component (60) co-molded on the shield (55) in a radially inward direction. The elastomeric component (60) has a plurality of lips, of which at least one lip (64, 65) is in contact with the locking collar (40).

Abstract: A sealing system includes a casing with an internal seat, a front edge, an opening, and a radially external lateral surface defining an annular seat. The annular seat includes an annular groove axially spaced from the front edge, itself including one or more mechanical stops, and a plurality of axial grooves connected to the annular groove and interrupting radially at least part of the front edge. The annular groove defines a bottom wall provided with projections spaced from one another and defining depressions, the projections circumferentially offset from the axial grooves. The sealing system further includes a cover with a bottom wall and an annular coupling portion. A radially inner surface of the annular coupling portion includes teeth projecting radially inward and spaced circumferentially from each other. The annular seat is configured to receive the at least one pair of teeth of the annular coupling portion of the cover.

Abstract: A support assembly includes a casing having an internal mounting seat, a bearing unit mounted on the internal mounting seat of the casing, and a first sealing device. The bearing unit includes a radially inner ring, a radially outer ring, and a plurality of rolling elements interposed between them. The first sealing device includes a first shield fixed to the radially outer ring, a second shield fixed to the radially inner ring and positioned axially internal with respect to the first shield, and a protective shield interference fit on a cylindrical seat of the casing and positioned axially internal relative to the second shield. The first and second shield define a first labyrinth seal between them. The protective shield and the second shield define a second labyrinth seal between them. The protective shield extends axially inward to an axial boundary of the casing at the cylindrical seat.

Abstract: A bearing unit comprising a stationary radially outer ring with a spherical radially outer surface with a convex shape; a radially inner ring that is rotary about a central rotation axis of the bearing unit and is mounted on a rotating or oscillating shaft in which a diametrical through-hole formed in a first cylindrical portion is used to receive an elastic element for locking the radially inner ring on the shaft; a plurality of rolling bodies interposed between the radially outer ring and the radially inner ring to enable the relative rotation of the two rings; and at least one element for locking the radially inner ring on the shaft in which a pair of threaded through-holes formed in either the first cylindrical portion or the second cylindrical portion of the radially inner ring is used to receive respective grub screws for locking the radially inner ring on the shaft.