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USM® 4015

The side of the profiled USM®® 4015 track mat facing the ballast or concrete slab has a fabric-reinforced rubber covering layer that is resistant to abrasion, oil, ozone and the weather. On the underside of the mat are lenticular spring elements, which are made of high-quality natural rubber mixtures. Their particularly good dynamic properties are very effective in isolating vibrations. In contrast to non-profiled foamed products, each stud deforms under load to ensure the mats provide efficient protection against structure-borne sound and vibrations without any limits to functionality, not only under the standard test loads in laboratory-controlled conditions, but also under the actual loads generated by rail traffic.

The USM® 4015 track mat has an overlapping strip, which is vulcanised in place to seal the joints. The use of high-quality rubber and rot-proof synthetic materials for the fabric means the track bed mat does not suffer any loss of functionality over the entire time it is in place.


Mainly as a transition mat between elastically and rigidly supported sections of track to smooth out the difference in stiffness.

Text of Tender document

Calenberg track mat USM® 4015, of high quality rubber compounds; abrasion, oil, ozone and weather resistant according to DBS 918071 or DIN 45673, part 5

  • Serviceability ≥ 60 years
  • Static modulus of subgrade reaction with preload s = 0,020 - 0,100 N/mm², Cstat. = 0,150 N/mm³ ± 15%
  • Dynamic modulus of subgrade reaction with preload s = 0,060 N/mm² und 40 Hz, Cdyn. = 0,400 N/mm³ ± 15%

Manufactured width: approx. 1554 mm
Thickness: approx. 14 mm
Mass per unit area: approx. 12,5 kg/m²
Price: €/m²
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