Subscribe to our newsletter

Equivalent conicity

The dynamic interaction between railway vehicle and track is fundamental to ensure a safe and efficient operation and maintenance of the railway and can be described by using equivalent conicity. A high equivalent conicity increases instability/hunting, infrastructural damages and the risk of derailment and is therefore a vital parameter to monitor for optimization of maintenance schedules.

Know the geometric interaction between wheels and rails

  • Optimize reprofiling maintenance schedule
  • Identify critical speed limits
  • Reduce risk of derailment
  • Improve vehicle stability
  • Reduce maintenance costs


Contact points

The contact points is a graph showing where all the contact between the wheel and rail profiles were found.

Contact angles

The contact angles shows a graph of the left and right contact angle and the difference between the left and right angle relative to the wheelset displacement.

Rolling radius difference

The rolling radius difference shows a graph of the difference rolling radius relative to the wheelset displacement.

Equivalent Conicity

The equivalent conicity shows a graph with the conicity plotted relative to the wheelset displacement.

Download the MiniProf BT brochure​
Discover MiniProf Academy
Your option for direct interaction and professional discussion with carefully selected and specialized MiniProf Academy partners!
MiniProf Academy

How can we assist you?

The MiniProf team is here for you! If you have any questions about our MiniProf products, Envision software, Criterion for Android, local agent details, re-calibration or any of our other services, do not hesitate to contact us – we will be pleased to assist.

Subscribe to our newsletter

... and get direct information on new products, features, updates, webinars, tips and tricks, special promotions and much more.

General information

Product & software support

Please make sure that your MiniProf instrument and laptop/tablet are fully charged.

Service & re-calibration