LL Brake Shoes - Noise Reduction

Technical Know-how Based on 30 Years' Experience.

Technical

LL Brake Shoes - Noise Reduction

Composite LL brake blocks offer the most cost effective measure in reducing the rolling noise of freight wagons.  When used in place of cast iron brake shoes, they reduce the rolling noise emission by as much as 10 dB.

It is for this noise reduction characteristic that such products are gaining importance in the railway freight market to the extent that the International Union of Railways (UIC) initiated the Europe Train Project to assist with field data collection and the homologation process of LL brake shoes. 

LL Brake Blocks

Developing a composite LL brake shoe is a complex task with a number of key technical challenges to overcome; such as:

  • Tare to laden performance ratio
  • Winter performance
  • Effect on track circuit and signalling system
  • Frictional behaviour and wear characteristics during drag braking
  • Effect on Equivalent Conicity
  • A direct and cost effective alternative to cast iron brake shoes

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