Abstract: A manufacturing apparatus for producing a curved contour on an end face of a roll includes a grinding device and a holding device, linearly movable relative to the grinding device. The grinding device is for grinding the curved contour on the end face. The holding device is for holding the roll between the holding device and the grinding device. A method for producing the curved contour on the end face using the manufacturing apparatus is also disclosed. The method includes driving the holding device to move in a linear fashion relative to the grinding device.

Abstract: A planet (11) for a planetary rolling contact gear, along whose planetary axis a middle section (12) having a larger diameter and, axially on both sides of the middle section (12), end sections (13) having a smaller diameter are formed, wherein a first engagement profile (14) is formed on the lateral surface of the planet (11) in the middle section (12) and a second engagement profile (15) is formed on the lateral surface of the planet (11) in the end sections (13), wherein the first engagement profile (14) has a plurality of first teeth (16) that are arranged in an annular manner around the planetary axis, wherein first grooves (17) arranged in an annular manner about the planet axis are formed between successive first teeth (16), wherein the two first edge teeth (23) located at the ends of the middle section (12) are formed within and at a distance from a tooth contour (18) of the first teeth (16) of the middle section (12).

Abstract: A planetary roller bearing is disclosed. The planetary roller bearing includes an outer ring including a first set of teeth, an inner ring including a second set of teeth, and planetary rolling elements arranged between the outer ring and the inner ring. The planetary rolling elements each include a third set of teeth configured to engage with the first set of teeth and the second set of teeth. A height of at least three successive teeth gradually increases from an axial end of a selected set of the first, second, or third sets of teeth.

Abstract: A planet (11) for a planetary rolling contact gear, along whose planetary axis a middle section (12) having a larger diameter and, axially on both sides of the middle section (12), end sections (13) having a smaller diameter are formed, wherein a first engagement profile (14) is formed on the lateral surface of the planet (11) in the middle section (12) and a second engagement profile (15) is formed on the lateral surface of the planet (11) in the end sections (13), wherein the first engagement profile (14) has a plurality of first teeth (16) that are arranged in an annular manner around the planetary axis, wherein first grooves (17) arranged in an annular manner about the planet axis are formed between successive first teeth (16), wherein the two first edge teeth (23) located at the ends of the middle section (12) are formed within and at a distance from a tooth contour (18) of the first teeth (16) of the middle section (12).

Abstract: A Planetary roller bearing having an outer ring with a tooth profile formed on the inner circumference by grooves, an inner ring with a tooth profile formed on the outer circumference by grooves, and a plurality of planetary rolling elements which are accommodated on the end side in cage disks and have a tooth profile formed by grooves. The tooth profiles of the planetary rolling elements engage in the tooth profiles of the rings, wherein a height, viewed axially, of at least one first tooth of the planetary rolling elements or of the outer or inner ring is less than that of the following second tooth, or that an axial distance (d1), viewed axially, of at least one first tooth to the following second tooth less than a distance of the second tooth to the third tooth.

Abstract: A planet (11) for a planetary rolling contact gear, along whose planetary axis a middle section (12) having a larger diameter and, axially on both sides of the middle section (12), end sections (13) having a smaller diameter are formed, wherein a first engagement profile (14) is formed on the lateral surface of the planet (11) in the middle section (12) and a second engagement profile (15) is formed on the lateral surface of the planet (11) in the end sections (13), wherein the first engagement profile (14) has a plurality of first teeth (16) that are arranged in an annular manner around the planetary axis, wherein first grooves (17) arranged in an annular manner about the planet axis are formed between successive first teeth (16), wherein the two first edge teeth (23) located at the ends of the middle section (12) are formed within and at a distance from a tooth contour (18) of the first teeth (16) of the middle section (12).

Abstract: A support element for the valve train of an internal combustion engine, having a hollow cylindrical housing that holds a displaceable piston. The piston has a hollow cylindrical pressure part and a pot-shaped work part axially adjacent thereto. An inner space of these parts forms a storage space for hydraulic medium. A high pressure space is defined by a base of the work part and the housing. The storage space and the high pressure space are connected hydraulically by a non-return valve with a ball for automatic lash compensation of the valve train. The piston is supported by a compression spring on the housing base, and a retaining ring is arranged radially between the pressure part and the housing, which limits axial travel of the piston. The ball is movably held in the base of the work part in an axial ball guide having first and second integrally formed ball seats.

Abstract: A nut (1, 13, 21, 25) for a planetary roller screw drive is provided. A sleeve (14) which is produced by metal forming is provided, and two rings (16) that lie at a fixed distance with respect to each other in the axial direction are provided in this sleeve. In order to engage planets (3), the one ring (16) has the one groove profile (18), and the other ring (16) has the other groove profile (18).

Abstract: A support element for the valve train of an internal combustion engine, having a hollow cylindrical housing that holds a displaceable piston. The piston has a hollow cylindrical pressure part and a pot-shaped work part axially adjacent thereto. An inner space of these parts forms a storage space for hydraulic medium. A high pressure space is defined by a base of the work part and the housing. The storage space and the high pressure space are connected hydraulically by a non-return valve with a ball for automatic lash compensation of the valve train. The piston is supported by a compression spring on the housing base, and a retaining ring is arranged radially between the pressure part and the housing, which limits axial travel of the piston. The ball is movably held in the base of the work part in an axial ball guide having first and second integrally formed ball seats.

Abstract: A planet (11) for a planetary rolling contact gear, along whose planetary axis a middle section (12) having a larger diameter and, axially on both sides of the middle section (12), end sections (13) having a smaller diameter are formed, wherein a first engagement profile (14) is formed on the lateral surface of the planet (11) in the middle section (12) and a second engagement profile (15) is formed on the lateral surface of the planet (11) in the end sections (13), wherein the first engagement profile (14) has a plurality of first teeth (16) that are arranged in an annular manner around the planetary axis, wherein first grooves (17) arranged in an annular manner about the planet axis are formed between successive first teeth (16), wherein the two first edge teeth (23) located at the ends of the middle section (12) are formed within and at a distance from a tooth contour (18) of the first teeth (16) of the middle section (12).

Abstract: A nut (1, 13, 21, 25) for a planetary roller screw drive is provided. A sleeve (14) which is produced by metal forming is provided, and two rings (16) that lie at a fixed distance with respect to each other in the axial direction are provided in this sleeve. In order to engage planets (3), the one ring (16) has the one groove profile (18), and the other ring (16) has the other groove profile (18).