Center for Tribology Research

Solutions for Electrical Contacts

CETR offers a wide range of solutions to meet your testing, research and analysis needs for various electrical and electronic components, such as contacts, connectors, brushes, commutators, etc.  

If you wish to perform your own tests, CETR manufactures and sells the world’s most advanced testers, backed by a full warranty, outstanding customer service, on-site installation and in-depth training.  

If you would like testing performed for you, CETR lab performs a wide range of tests to meet your testing needs.  Strict confidentiality of your data is always guaranteed.

Our single-platform, multiple-configurations fully-computerized UMT testers of the unique acclaimed modular design can perform practically all common mechanical and tribological tests of any electrical components with simultaneous measurements of forces, wear and deformation, electrical resistance and/or voltage drop, which has made them the most widely used testers for electrical components in the world.

Some of the typical tests routinely run on the UMT-series testers for electrical components:

  • durability of electrical brushes,
  • durability of electrical contacts and connectors,
  • study of speed, load and temperature effects on durability,
  • optimization of the spring-load on electrical components,
  • optimization of materials for electrical components,
  • design optimization of electrical components.

The attached documents list some of the typical applications:

In all these and numerous other tests, the UMT can perform an automated synchronized control of several specimen motions with linear speeds from 0.1 micron/s to 30 m/s (7 orders of magnitude!) and angular speeds ranging from 0.001 to 7,000 rpm, under the precision loads from 1 µN to 1 kN (9 orders of magnitude!).  In these unprecedented wide ranges, the UMT can automatically monitor a number of process parameters in-situ with a high sampling rate:

  • Normal load (servo-controlled, constant or changing, e.g., sinusoidal),
  • Friction force, torque and coefficient (static and dynamic),
  • Wear depth and rate,
  • Deformation depth and rate,
  • Contact and surface electrical contact resistance,
  • Voltage,
  • Contact high-frequency acoustic emission,
  • Temperature and humidity.

The above tests can be performed in optional controlled environmental conditions, including temperature from -25C to 1,000 ºC, humidity from 5 to 95 %RH, various gases, vacuum (to 10E-6 torr).


Contact CETR to discuss your testing needs in detail, for more information and pricing or to set up an appointment to visit our lab in Northern California. You will surely be pleased with our wide expertise, unique equipment and friendly effective services.