Abstract: A brake pad according to an embodiment includes a friction material containing copper at 0.5 wt % or less, a back plate, and an under-layer material laminated between the friction material and the back plate and having an average loss modulus of 500 MPa or more at ?50° C. to 0° C. in a bending mode.

Abstract: A brake pad according to an embodiment includes a friction material containing copper at 0.5 wt % or less, a back plate, and an under-layer material laminated between the friction material and the back plate and having an average loss modulus of 500 MPa or more at ?50° C. to 0° C. in a bending mode.

Abstract: The present invention provides a friction material having compatibility between a high effectiveness and a long life. For that purpose, a titanate compound and a cerium oxide are contained in the friction material, wherein the cerium oxide has an average particle size of 1 ?m or less.

Abstract: A disk brake has a support member, an inner pad, and an outer pad. The support member is mounted on a car body member at a side near a car body with respect to a disk rotor and straddles the disk rotor in a cantilever manner in a rotor axis direction. The inner pad is movably supported in the rotor axis direction by the support member at a side near the car body with respect to the disk rotor. The outer pad is movably supported in the rotor axis direction by the support member at an outer side of the car body with respect to the disk rotor. The outer pad has a smaller friction coefficient than that of the inner pad, and the braking torque generated between the outer pad and the disk rotor is smaller than the braking torque generated between the inner pad and the disk rotor.

Abstract: A friction pair has a friction member and a mating member. A braking force is generated owing to a friction force generated between the friction member and the mating member. The friction member includes base fibers, a friction conditioner, a binder and copper oxide. The copper oxide has an average particle diameter of 1.5 ?m or less. And an addition amount of the copper oxide is in the range of 0.5 to 7% by volume to an entirety of the friction member. Further, the mating member is made of an iron base material.

Abstract: A friction pair has a friction member and a mating member. A braking force is generated owing to a friction force generated between the friction member and the mating member. The friction member includes base fibers, a friction conditioner, a binder and copper oxide. The copper oxide has an average particle diameter of 1.5 ?m or less. And an addition amount of the copper oxide is in the range of 0.5 to 7% by volume to an entirety of the friction member. Further, the mating member is made of an iron base material.

Abstract: A disk brake has a support member, an inner pad, and an outer pad. The support member is mounted on a car body member at a side near a car body with respect to a disk rotor and straddles the disk rotor in a cantilever manner in a rotor axis direction. The inner pad is movably supported in the rotor axis direction by the support member at a side near the car body with respect to the disk rotor. The outer pad is movably supported in the rotor axis direction by the support member at an outer side of the car body with respect to the disk rotor. The outer pad has a smaller friction coefficient than that of the inner pad, and the braking torque generated between the outer pad and the disk rotor is smaller than the braking torque generated between the inner pad and the disk rotor.

Abstract: A brake friction material, which is pressed against a disc rotor formed of an iron-based material, contains a reinforcing fiber, a friction-controlling material, and a filler, which are bonded together with a binder resin. The brake friction material further contains iron oxide particles having a particle size of 0.5 ?m or less in an amount of 1 to 30 vol %. When the brake friction material comes into surface contact with an iron-made disc rotor under non-braking conditions, an iron oxide protective film can be formed on the friction surface of the disc rotor through reaction between the iron oxide contained in the friction material and iron constituting the disc rotor. Therefore, grinding of the disc rotor by the grinding component of the brake friction material can be suppressed.

Abstract: A friction material suitable for mating with a disk rotor or drum consisting mainly of an aluminum alloy reinforced by a hard material. The friction material suppresses the generation of a scoring on the disk rotor or drum. It also suppresses the change in the coefficient of friction before and after a heat history. The friction material comprises not only an organic-fiber base material, a binder resin, a friction-adjusting agent, a filler, and an inorganic powder, but also an inorganic fiber and a metal powder having a particle diameter of 1 to 180 &mgr;m.

Abstract: A friction material suitable for mating with a disk rotor or drum consisting mainly of an aluminum alloy reinforced by a hard material. The friction material suppresses the generation of a scoring on the disk rotor or drum. It also suppresses the change in the coefficient of friction before and after a heat history. The friction material comprises not only an organic-fiber base material, a binder resin, a friction-adjusting agent, a filler, and an inorganic powder, but also an inorganic fiber and a metal powder having a particle diameter of 1 to 180 &mgr;m.