Bearing plates (ПР) are used for reinforced concrete (C) and wooden (W) sleepers to increase the longitudinal stability of the rails as well as to reduce the dynamic loads exerted on the express tracks. These products are available in the following types:

for concrete sleepers: ПРБ-1, ПРБ-2, ПРБ-4
for wooden sleepers: ПРД-2
Sleeper type: concrete (C), wooden (W)

Bearing plates are made of rubber (group 1, 2, 4)

Shelf life: 6 years as from the date of production.
Service life: 5 years due to shelf life.