A method for manufacturing a clutch body for a synchronizing device of a transmission includes the steps of: a) providing an externally toothed clutch disk, b) providing a counterfriction ring, c) applying a friction lining onto the counterfriction ring, d) establishing a non-releasable connection between the clutch disk and the counterfriction ring, and e) upsetting a portion of the counterfriction ring at least partly provided with the friction lining in radially inwardly facing direction, so that a counterfriction cone is formed, which is provided for cooperation with a friction surface of the synchronizer ring.

A method for forming a friction facing comprises placing a bonding powder mix in to a die, and placing a performance powder mix in to the die. Pressing the performance powder mix and the bonding powder mix creates a compact. Sintering the compact forms a friction facing. A clutch disc assembly can be formed. A clutch disc can comprise a mounting hole for securing a friction facing and a backer plate can comprise a pass-through hole. A mounting mechanism joins the mounting hole to the pass-through hole. The mounting mechanism comprises a head-height for a portion of the mounting mechanism that is mounted near the sintered compact. The bonding layer comprises a thickness corresponding to the head-height of the mounting mechanism.

The task of reducing the shielding or coning of a brake disc as a result of a temperature rise is solved by selecting a suitable material for the friction discs. The invention relates to a brake disc for a disc brake of a vehicle with a brake disc pot which has a pot base, a pot wall and an axis and with a friction disc unit, which is firmly connected to the wall and has two friction discs arranged parallel to one another in the form of a pot-side friction disc and a piston-side friction disc with friction surfaces which are arranged perpendicular to the axis (3), with the pot-side friction disc being closer to the bottom or base of the pot than the piston-side friction disc. In such a brake disc, it is provided that the piston-side friction disc consists at least partially of a material whose specific thermal expansion coefficient is lower than the thermal expansion coefficient of the pot-side friction disc.

A friction engagement device of an automatic transmission is provided, which includes a rotational member comprised of at least one of a drum member and a hub member including a spline part engaged with a friction plate to be movable in axial directions of the automatic transmission, and a drive force transmitting part for exchanging a drive force with another rotational element. The drive force transmitting part of the rotational member is made of a ferrous metal. A part of the rotational member other than the drive force transmitting part is made of a clad material containing a first material that is easily joined to the ferrous metal and a second material that is less easily joined to the ferrous metal compared to the first material and weighs less than the ferrous metal.

A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is L1 [m] and the average length of the second fibers is L2 [m], L2/L1 is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

A method of manufacturing a corrosion- and wear-resistant component and a corrosion- and wear-resistant component. The method includes preparing a feedstock powder that includes a stainless steel powder and a ceramic powder, sintering the feedstock powder at a first temperature to form a low porosity free-standing wear body, and bonding the wear body to an aluminum or aluminum alloy substrate at a second temperature lower than the first temperature.

An elevator system with an elevator car, elevator en guide rails, at least one braking rail, and a brake mechanism and/or safety gear that determines the elevator car movement when activated and in turn has at least one brake block that cooperates with the braking rail. The active surface of this brake block that comes into contact with the braking rail functioning as the brake lining is at least one welding bead whose surface hardness is greater than surface hardness of the braking rail. A method for manufacturing such an elevator brake block includes welding at least two welding beads on a brake lining support composed of a weldable, preferably low-alloyed steel, which constitutes the brake lining that is brought into frictional contact with the braking rail during operation.

The present disclosure relates to a method of manufacturing a friction element, the method comprising the steps of providing a back plate, the back plate having a connection surface comprising a plurality of protrusions; providing a sintering composition and applying the sintering composition to the connection surface and shaping the sintering composition to form an intermediary friction element; positioning the intermediary friction elements between a sintering plates; and simultaneously applying a pressure between the sintering plates, the pressure being in the range of 10 kg/cm.sup.2 to 200 kg/cm.sup.2; increasing the temperature to a sintering temperature in the range of 800 C. to 950 C., optionally by applying an electrical current between the sintering plates; and maintaining at least one of the applied pressure, the optionally applied electrical current and the sintering temperature for a sintering duration in the range of 1 hour to 10 hours to form a friction material on the back plate.

A brake rotor assembly can include a structural part having a receiving surface and at least one friction surface parts having a contact surface. The friction surface part can be fixably attached to the receiving surface of the structural part such that the contact surface faces away from the receiving surface of the structural surface to form at least part of an annular braking surface arranged concentrically around an axis of rotation of the structural part.

A method for forming a friction facing comprises placing a bonding powder mix in to a die, and placing a performance powder mix in to the die. Pressing the performance powder mix and the bonding powder mix creates a compact. Sintering the compact forms a friction facing. A clutch disc assembly can be formed. A clutch disc can comprise a mounting hole for securing a friction facing and a backer plate can comprise a pass-through hole. A mounting mechanism joins the mounting hole to the pass-through hole. The mounting mechanism comprises a head-height for a portion of the mounting mechanism that is mounted near the sintered compact. The bonding layer comprises a thickness corresponding to the head-height of the mounting mechanism.