Abstract: An insert includes a cBN sintered compact including cBN particles and a binder phase binding the cBN particles. The cBN particles occupy 60% or more of the cross-sectional area of the cBN sintered compact. The binder phase contains Al compound particles containing at least one of AlN or Al2O3. A particle distribution of the Al compound particles in a cumulative distribution based on the number of the Al compound particles in a cross section of the cBN sintered compact is as follows. The proportion of the Al compound particles with the particle diameter of 0.3 ?m or larger is 5% or more, and the proportion of the Al compound particles with the particle diameter of 0.5 ?m or larger is less than 5%.

Abstract: A hydraulic actuation device includes a case; an oil passage provided in the case; and a support member provided in the case and configured to support a supported member. The oil passage includes an opening portion that allows the oil passage to communicate with a space inside the case, the support member is inserted into the opening portion, and a communication between the oil passage and the space inside the case is blocked by the support member.

Abstract: A torque limiter includes a first side plate, a second side plate, a friction disc, a pressure plate, and a biasing member. The first side plate includes an attachment surface. The attachment surface faces in an axial direction so as to be attached to a flywheel. The second side plate has a smaller outer diameter than the outer diameter of the first side plate. The second side plate is disposed so as to not overlap the attachment surface as seen in an axial direction. The second side plate is attached to the first side plate.

Abstract: An insert of the present disclosure includes a cBN sintered compact containing cBN and TiN. The cBN occupies 60% or more of the cross-sectional area of the cBN sintered compact observed. TiN(200) is higher than cBN(111), where the TiN (200) is an X-ray intensity on a (200) plane of the TiN and the cBN (111) is an X-ray intensity on a (111) plane of the cBN, obtained by X-ray diffraction on the cBN sintered compact.

Abstract: An insert includes a cBN sintered compact including cBN particles and a binder phase binding the cBN particles. The cBN particles occupy 60% or more of the cross-sectional area of the cBN sintered compact. The binder phase contains Al compound particles containing at least one of AN or Al2O3. A particle distribution of the Al compound particles in a cumulative distribution based on the number of the Al compound particles in a cross section of the cBN sintered compact is as follows. The proportion of the Al compound particles with the particle diameter of 0.3 ?m or larger is 5% or more, and the proportion of the Al compound particles with the particle diameter of 0.5 ?m or larger is less than 5%.