A rolling-element bearing includes a first bearing ring, a second bearing ring, and a seal unit formed in a multiple-piece manner, the seal unit including an at least part-ring shaped main element which is freely rotatable with respect to the first bearing ring and the second bearing ring and at least one seal lip. In addition, the main element and the seal lip are exchangeably connectable to each other.

A bearing includes an outer ring with a first outer roller race, a second outer roller race, and a radially inward facing outer ball race. The bearing includes a first and second inner rings that axially abutting one another at an abutment interface. The first inner ring has a first inner roller race, the second inner ring has a second inner roller race that are disposed in an interior area coaxially with the outer ring. A plurality of first rollers rollingly engage the first outer roller race and the first inner roller race. A plurality of second rollers rollingly engage the second outer roller race and the second inner roller race. A plurality of balls rollingly engage the outer ball race and the inner ball race.

A bearing includes an outer ring with a first outer roller race, a second outer roller race, and a radially inward facing outer ball race. The bearing includes a first and second inner rings that axially abutting one another at an abutment interface. The first inner ring has a first inner roller race, the second inner ring has a second inner roller race that are disposed in an interior area coaxially with the outer ring. A plurality of first rollers rollingly engage the first outer roller race and the first inner roller race. A plurality of second rollers rollingly engage the second outer roller race and the second inner roller race. A plurality of balls rollingly engage the outer ball race and the inner ball race.

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 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 self-aligning roller bearing having an inner and an outer bearing ring, at least one row of roller elements disposed between the inner and outer bearing ring, a cage for guiding the roller elements, a shield element comprising a ring-formed shield provided at a first axial side of the self-aligning roller bearing, the ring-formed shield being configured for preventing foreign matter from entering an interior space between the inner ring and the outer ring, the shield element further comprising a plurality of male connection elements protruding out from the ring-formed shield. The cage having a cage side portion provided at the first axial side. The cage side portion includes a plurality of female connection elements. Each male connection element is inserted into a respective female connection element of the plurality of female connection elements forming mating pairs of connection elements hereby connecting the shield element to the cage side portion.

A self-aligning roller bearing having an inner and an outer bearing ring, at least one row of roller elements disposed between the inner and outer bearing ring, a cage for guiding the roller elements, a shield element comprising a ring-formed shield provided at a first axial side of the self-aligning roller bearing, the ring-formed shield being configured for preventing foreign matter from entering an interior space between the inner ring and the outer ring, the shield element further comprising a plurality of male connection elements protruding out from the ring-formed shield. The cage having a cage side portion provided at the first axial side. The cage side portion includes a plurality of female connection elements. Each male connection element is inserted into a respective female connection element of the plurality of female connection elements forming mating pairs of connection elements hereby connecting the shield element to the cage side portion.

A sealed greasable swivel connector for underground use in directional drilling operations. The swivel connector has first and second swivel heads with pulling eyes. The first swivel head is pressfit into a tubular member and welded in place. The second swivel head is welded to a bolt in a bearing arrangement which is sealed with a bushing in the tubular member and allows for rotational movement between the first swivel head/tubular member and second swivel head/bolt. A zerk fitting is provided in first swivel head for flushing any drilling mud through the bushing that may find its way into the connector out of the tubular member.

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 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.