Our Maintenance division is dedicated to overhaul, testing and adjustment or re-
of railcar suspension dampers (shock absorbers). Many operators now have dampers and
Friction Snubbers rebuilt by Sigra to our high standards, rather than discarding and replacing
with OEM units at a much higher cost and long delivery delays. Sigra overhauls thousands
of Railcar and Locomotive dampers each year, helping to keep our customers' maintenance
programs on track.
We repair and test every damper according to its original specifications. Also certificates
of conformance as well as test logs and print outs for every damper overhauled are
upon request. All dampers are tested using our Computer Aided Control (CAC) Damper Testing
machines. Each Force vs. Displacement chart (as below) is then inspected for irregularities and
the valving forces are set to the correct value.