A free-wheel comprising a driving part and a driven part that are able to rotate about an axis of rotation, the free-wheel comprising at least one rotational connecting member arranged in a connection space, a driven connection section of the driven part surrounding a driving connection section of the driving part, the connection space being located radially, with respect to the axis of rotation, between the driving connection section and the driven connection section. The free-wheel comprises at least one barrier, the geometry of which varies depending on the speed of rotation of the driving part, arranged radially between the driving part and the driven part and longitudinally against the connection space, the barrier being constrained to rotate with the driving connection section.

An outer member of a rotation transmission device has an opening integral with an inner peripheral portion of the outer member. Engaging elements are disposed between an inner member and the inner peripheral portion. An outer ring is fitted to the inner peripheral portion. A first snap ring is attached to the inner peripheral portion. An inner ring is fitted to an end portion of the inner member at one axial end thereof. A second snap ring is attached to the end portion through the opening. A shaft is connected to the opening so as to be rotatable in unison with and coaxially with the outer member.

An outer member of a rotation transmission device has an opening integral with an inner peripheral portion of the outer member. Engaging elements are disposed between an inner member and the inner peripheral portion. An outer ring is fitted to the inner peripheral portion. A first snap ring is attached to the inner peripheral portion. An inner ring is fitted to an end portion of the inner member at one axial end thereof. A second snap ring is attached to the end portion through the opening. A shaft is connected to the opening so as to be rotatable in unison with and coaxially with the outer member.

Provided is a two-way clutch capable of making a size in an axial direction thereof compact. A first engaging element (5) and a second engaging element (6) are arranged in a first wedge-shaped space (S1) and a second wedge-shaped space (S2) between an outer member (2) and an inner member (3). The first engaging element (5) is held by the first retainer (7) and the first retainer (7) is enabled to swing to the outer member (2). The second engaging element (6) is held by the second retainer (8) and the second retainer (8) is enabled to swing to the outer member (2). In a side view orthogonal to an axial direction of the first engaging element (5) and the second engaging element (6), at least a part of the first engaging element (5) and at least a part of the second engaging element (6) overlap in the axial direction.

Provided is a two-way clutch capable of making a size in an axial direction thereof compact. A first engaging element (5) and a second engaging element (6) are arranged in a first wedge-shaped space (S1) and a second wedge-shaped space (S2) between an outer member (2) and an inner member (3). The first engaging element (5) is held by the first retainer (7) and the first retainer (7) is enabled to swing to the outer member (2). The second engaging element (6) is held by the second retainer (8) and the second retainer (8) is enabled to swing to the outer member (2). In a side view orthogonal to an axial direction of the first engaging element (5) and the second engaging element (6), at least a part of the first engaging element (5) and at least a part of the second engaging element (6) overlap in the axial direction.

A rotation braking device includes a clutch mechanism disposed between an inner member and an outer member. The clutch mechanism includes an electromagnetic actuator which controls relative rotation of the cage such that, due to the relative rotation, engaging elements are moved between an engaged position and a neutral position. An armature is rotationally fixed relative to the cage, and can be directly magnetically attracted to an electromagnet which is rotationally fixed relative a housing that houses the clutch mechanism. The outer member is directly supported in a radial direction by the housing and engages the housing so as to limit relative rotation relative to each other.

A measuring device with a crankshaft and a load cell for determining a radial force acting on the crankshaft having a receiving sleeve for receiving a bearing ring and a fastening ring for attaching the load cell in a transmission housing. Axial support areas are provided on the fastening ring for axially supporting the outer ring of the first bearing. Moreover, measuring regions for receiving radial forces of the receiving sleeve are provided which connect the receiving sleeve with the fastening ring. Strain sensors are attached to at least two of the measuring regions. An evaluation electronics is connected to the strain sensors.

A roller freewheel (1) has at least the following components: a rolling element cage (3); a plurality of rolling elements (4), the rolling elements (4) being accommodated in the rolling element cage (3); a ramp ring (5) having a ramp contour (6) for blocking the rolling elements (4) with the ramp contour (6) in a first direction of rotation (7) and for allowing rotation of the rolling elements (4) relative to the ramp ring (5) in the opposite, second direction of rotation (8). The ramp contour (6) of the ramp ring (5) is designed to accommodate a plurality of rolling element rows (9, 10, 11), and the rolling element cage (3) comprises a plurality of separate partial cages (12, 13, 14), each partial cage (12, 13, 14) comprising at least one rolling element row (9, 10, 11).

A roller freewheel (1) has at least the following components: a rolling element cage (3); a plurality of rolling elements (4), the rolling elements (4) being accommodated in the rolling element cage (3); a ramp ring (5) having a ramp contour (6) for blocking the rolling elements (4) with the ramp contour (6) in a first direction of rotation (7) and for allowing rotation of the rolling elements (4) relative to the ramp ring (5) in the opposite, second direction of rotation (8). The ramp contour (6) of the ramp ring (5) is designed to accommodate a plurality of rolling element rows (9, 10, 11), and the rolling element cage (3) comprises a plurality of separate partial cages (12, 13, 14), each partial cage (12, 13, 14) comprising at least one rolling element row (9, 10, 11).

To provide a cam clutch unit that reduces the number of machining steps and level of difficulty of cam clutch production and reduces rotation resistance caused by rollers. The cam clutch unit includes: a plurality of cams and a plurality of rollers circumferentially arranged between an inner race and an outer race that are coaxial and rotatable relative to each other; a cage ring having a plurality of pocket portions that restrict circumferential relative movements of the cams and the rollers; and an annular spring that biases the cams. The cams each have, on one axial end face, an engagement step that can engage with the spring. The cage ring has a plurality of hook portions that restrict axial movements of the annular spring.