Brake shoes for metro cars 2.7030.31.41.017.20

Brake shoes are used in wheel pairs of carriages of passenger trains of underground. The shoe is a moulded in a press mould, non-asbestos friction material. Method of manufacture: cold and hot moulding in a press mould at a certain pressure and temperature with pressing into a steel metal frame. Brinell hardness, NV 16/187,5/30 can be presented in the range from 1,2 to 2,5 incl. Coefficient of friction for cast iron grade ??-15 can be presented in the range from 0,35 to 0,55. Linear wear on cast iron grade ?? 15, mm, not more than 0,25