A friction disk includes a friction disk core having an inner diameter edge, an outer diameter edge, and a first surface with multiple mortises extending radially across the first surface, each of the multiple mortises having a different dimension at the inner diameter edge than at the outer diameter edge. The friction disk further includes a first wear liner having two wear liner segments each including a wear surface and a non-wear surface having a tenon with a complimentary shape to each of the multiple mortises, the tenon being configured to be received by a corresponding mortise of the multiple mortises to couple the wear liner segments to the friction disk core to form an annular liner.

A friction disk includes a friction disk core having an inner diameter edge, an outer diameter edge, and a first surface with multiple mortises extending radially across the first surface, each of the multiple mortises having a different dimension at the inner diameter edge than at the outer diameter edge. The friction disk further includes a first wear liner having two wear liner segments each including a wear surface and a non-wear surface having a tenon with a complimentary shape to each of the multiple mortises, the tenon being configured to be received by a corresponding mortise of the multiple mortises to couple the wear liner segments to the friction disk core to form an annular liner.

A brake pad having a surface coating operable to enhance the bedding-in process during normal operation. The surface coating may be formulated using one or more materials found in a friction lining of the brake pad. The surface coating may be formulated using only non-metal materials.

A friction disk includes a friction disk core having an inner diameter edge, an outer diameter edge, and a first surface with multiple mortises extending radially across the first surface. The friction disk further includes a first wear liner having two wear liner segments each including a wear surface and a non-wear surface having a tenon with a complimentary shape to each of the multiple mortises, the tenon of each wear liner segment being configured to be received by a corresponding mortise of the multiple mortises to couple the wear liner segments to the friction disk core to form an annular liner.

The present invention relates to a friction member comprising a friction material and a back metal, wherein the friction material comprises no copper, or has a copper content of less than 0.5% by mass in terms of a copper element even if the friction material comprises copper, the friction material comprises magnesium oxide and a carbon material comprising graphite and coke, the carbon material is obtained by blending in a combination of a coarse-grained material and a fine-grained material, an average particle diameter of the coarse-grained material is 100 to 600 m, and an average particle diameter of the fine-grained material is less than 100 m.

Disclosed is a friction assembly for a railway disc brake system, this friction assembly including, on the one hand, a brake head including an upper face with a receiving slide, and a lower face, and on the other hand, shoe of friction material and including a first face which is the friction face, and a second face with a profile member configured to engage with the receiving slide, the shoe including a duct establishing sealed communication between a first space bordered by the first face and a second space bordered by the second face, the friction assembly further including a through-hole of central axis A, provided in the brake head and located in line with the duct, and a connection bushing in the through-hole and forming a connection with the duct. The friction assembly includes a return mechanism capable of pressing the connection bushing against the profile member.

A brake pad having a backing plate, friction lining, and a surface coating adhered to the friction lining. The surface coating may be formulated to generate a transfer layer on a brake rotor faster than the friction lining alone. The surface coating may be adhered to the friction lining in a predetermined design.

A method of manufacturing a plurality of wear liner segments may comprise selecting a number of wear liner segments for a wear liner assembly. The wear liner assembly may be annular in shape. The number of wear liner segments may selected based on minimizing a waste portion of a textile board and/or maximizing a production capacity of a plurality of the wear liner assembly.

A friction part includes a friction surface with a first row of first friction lining pieces arranged radially inwardly, a second row of second friction lining pieces arranged between the first friction lining pieces and a third row of third friction lining pieces, and the third row of third friction lining pieces arranged radially outwardly. Stem grooves are formed between adjacent pairs of the first friction lining pieces. Radially inner branch grooves emerge from the stem grooves and are delimited by the adjacent pairs of the first friction lining pieces and by the second friction lining pieces. Radially outer branch grooves are delimited by the second friction lining pieces and the third friction lining pieces. The radially inner branch grooves and the radially outer branch grooves are connected to each other by offset grooves with a tangential offset between the radially inner branch grooves and the radially outer branch grooves.

A friction disk of a braking system may include a friction disk core and a first wear liner. The friction disk core has an outer surface that defines a recess extending gradually inward from the outer surface, according to various embodiments. The wear liner mates to the outer surface of the friction disk core and includes a wear surface and a first non-wear surface, according to various embodiments. The first wear liner further includes a notch extending gradually outward from the first non-wear surface of the wear liner, according to various embodiments. In an installed state, the notch is received within the recess, according to various embodiments.