A motor assembly includes a first bearing installed on a rotating shaft adjacent to an impeller to support a first support part of the rotating shaft, a second bearing installed on the rotating shaft adjacent to the rotor to support a second support part of the rotating shaft, a bearing bracket receiving the first and second bearings therein, an elastic member inserted between the first bearing and the bearing bracket or between the second bearing and the bearing bracket to press either the first bearing or the second bearing to get closer to each other, and a separation preventing member installed on the bearing bracket to fix the first bearing, the second bearing and the elastic member to an inner space of the bearing bracket such that at least one portion of the separation preventing member overlaps with one of the first bearing, the second bearing and the elastic member.

A dry-lubricating apparatus, for press fitting onto a mating part, includes (a) a frame, (b) a rubber gasket fixed to the frame to create an interference with a mating surface of the mating part so as to enable the press fitting, and (c) a lead-in edge fixed to at least one of the frame and the rubber gasket. The lead-in edge includes a dry lubricant such that, when the dry-lubricating apparatus is slid onto the mating part, along the mating surface and with the rubber gasket trailing the lead-in edge, a portion of the dry lubricant is abraded off the lead-in edge to reduce friction between the rubber gasket and the mating surface.

A method of inserting an H-Seal in a bearing, the H-Seal having two ends, two upper lips, two lower lips and a vertical flange positioned between the bearing that secures the upper and lower lips together, the bearing having seal faces, inner and outer rings and a gap therebetween. The method provides including an insertion tool assembly, priming the H-Seal into the insertion tool, sliding the tool with the H-Seal loaded therein within a slot, placing the lower lips back on their respective face, allowing the lower lips to recover their initial shape. The tool moves the lower lips to a vertical position (T shape), inserts the seal between the rings and the lower lips recover their initial shape and places them naturally back on their respective faces.

A seal assembly device is configured to attach an annular seal by press-fitting to an axial end portion of a first raceway member of a wheel bearing device. The seal assembly device includes: a columnar guide member including a contact surface configured to contact a plurality of rolling elements provided along a raceway surface formed on the first raceway member from a side opposite to the raceway surface, the contact surface being continuous in a circumferential direction; a pressing member configured to move in an axial direction along the guide member toward the axial end portion so as to press the seal in the axial direction and to press-fit the seal into the axial end portion; and a reference member configured to restrict a movement stroke of the pressing member with respect to the guide member in the axial direction.

A temperature-robust polymer shroud for a roller bearing seal includes a shroud body and an inner diameter leg defining respective portions of a single continuous part. The shroud body encircles a rotation axis of the polymer shroud and extends predominantly in directions orthogonal to the rotation axis from an inner diameter to an outer diameter. The inner diameter leg connects to the shroud body at the inner diameter and encircles the rotation axis, wherein, along the entire inner diameter of the shroud body, the inner diameter leg is oriented at an oblique angle to the rotation axis to extend both (a) radially inward from the inner diameter and (b) axially away from the inner diameter along a first direction parallel to the rotation axis. A roller bearing seal includes a seal case, an elastomer lip, and the temperature-robust polymer shroud.

A tool for inserting an H-Seal in a bearing includes a vertical part assembly having a top portion, a bottom portion, and a freely rolling disc. A first interconnecting portion is configured to engage a second interconnecting portion, the first interconnecting portion configured to receive the vertical part assembly through an opening in the first interconnecting portion. A gripping element connected to the top portion. A rolling disc mounted to the bottom portion of the vertical part assembly. First and second sliding pads having first and second evolutive guides that vary in shape from top to bottom and from back to front. The evolutive guides are configured to pass the H-Seal between the stages of being in a free state with lower lips opened outward, to pre-inserted into the bearing, to inserted into the bearing, to coming down into the bearing, to the lower lips opening outward.

A bearing assembly engaged with an end of a rotatable shaft. The assembly includes a hub defining a first bore extending between a first opening at a first end of the hub and a second opening at a second end of the hub. A bearing sleeve engaged in the first bore defines a second bore. The shaft's end is inserted through a first opening in the second bore. A sealed bearing located between the bearing sleeve and the hub's interior surface enables relative rotation therebetween. A first sealing mechanism seals the first bore's first opening and a second sealing mechanism seals the second openings of both of the first and second bores. The first sealing mechanism includes an L-shaped ring circumscribing the bearing sleeve and a rubber sealing member. The second sealing mechanism includes a hemispherical region and flange secured to the hub by a retaining ring.

A wheel hub and slinger assembly includes a wheel hub including a base surface, a tolerance compensation portion extending from the base surface and formed to be concave in an axially outward direction, and a flange surface extending from the tolerance compensation portion in a radially outward direction, and a slinger including a mounting portion having an axially inward end portion and a first inner peripheral surface and configured to be press-fitted to the base surface, a bent portion having a second inner peripheral surface spaced apart from the tolerance compensation portion and extending from the mounting portion in a curved surface shape, and an extending portion extending from the bend portion and having a contact surface in contact with the flange surface in the radially outward direction. A stopper having an axially outward end portion surface and a radially outward end portion surface is formed on the wheel hub.

According to one embodiment of the present disclosure, a sealing device of a wheel bearing may be disposed axially outside of rolling elements and may be mounted between an outer ring and a hub. The sealing device of the wheel bearing may comprise an outer ring slinger mounted on the outer ring, a hub slinger mounted on the hub, and a deviation-preventing protrusion which protrudes from an outer circumferential surface of the hub to hold an axial inner end of the hub slinger when the hub slinger moves inward in an axial direction. The outer circumferential surface of the hub may meet the deviation-preventing protrusion at right angles.

A temperature-robust polymer shroud for a roller bearing seal includes a shroud body and an inner diameter leg defining respective portions of a single continuous part. The shroud body encircles a rotation axis of the polymer shroud and extends predominantly in directions orthogonal to the rotation axis from an inner diameter to an outer diameter. The inner diameter leg connects to the shroud body at the inner diameter, encircles the rotation axis, and is oriented at an oblique angle to the rotation axis to extend both (a) radially inward from the inner diameter and (b) axially away from the inner diameter along a first direction parallel to the rotation axis. A roller bearing seal includes a seal case, an elastomer lip, and the temperature-robust polymer shroud.