When the train is running and braking, the brake part that directly rubs the wheel to stop the train is the brake shoe; the tile shaped brake block made of cast iron or other materials holds the wheel tread tightly and makes the wheel stop rotating through friction.
Specifications：
| Material | Composite, cast iron, gray cat iron |
| Inspection | Domestic or Appointed |
| Braking Force | 1. High friction |
| 2. Low friction | |
| Density g/cm³ | Not more than ± 5% |
| Rockwell hardness HRR | 55 ~ 100 |
| Impact strength kJ/m² | ≥ 1.8 |
| Compression strength MPa | ≥ 25 |
| Compression modulus MPa | ≤ 1.5×10³ |
| Speed | Using for 80-120km/h |
| Application | Railway locomotive, railway wagon, passenger car ect. |
Allowable range of average friction coefficient of low friction brake shoe(applied force on break shoes K=80kN)
| Initial braking speed (km/h) | 40 | 60 | 80 | 100 | 120 |
| Average friction coefficient | 0.15±0.04 | 0.14±0.04 | 0.13±0.04 | 0.125±0.04 | 0.12±0.04 |
Allowable range of average friction coefficient of high friction brake shoe(applied force on break shoes K=34kN)
| Initial braking speed (km/h) | 40 | 60 | 80 | 100 | 120 |
| Average friction coefficient | 0.31±0.04 | 0.30±0.04 | 0.29±0.04 | 0.285±0.04 | 0.28±0.04 |
Features:
1. Composite friction material bearing high energy braking;
2. High coefficient of friction and stability;
3. Small heat fade for coefficient of friction;
4. Temperature insensitiveness;
5. Develop according to the samples or drawings;
6. With quality certification.
