HFRR 
The HFRR (High Frequency Reciprocating Rig) is a computer-controlled reciprocating friction and wear test system which provides a fast, repeatable assessment of the performance of fuels and lubricants.
Center for Tribology - CET
Center For Tribology, Inc. is a tribology testing laboratory and a provider of tribology test instrumentation.
Ducom
Manufacturer of standard and custom designed material testing equipment. Includes sample product list.
Falex Corporation
Offers a complete line of tribology test equipment and services for friction, wear, lubrication, and abrasion studies.
Falex Tribology NV
A tribological testing laboratory and manufacturer of tribological test machines and specimens for sale
Imperial Scientific Industries
Imperial offers tribology and petroleum test equipment as per ASTM, IP, DIN and other international standards.
Koehler Instrument Co., Inc.
Designs and manufactures tribology instruments for friction and wear testing conforming to ASTM, IP and related test methods as well as custom designed products.
National Tribology Services,
Offers testing of gearboxes, pumps, compressors, engines, turbines, hydraulics, greases, and used lubricants, oil analysis laboratory
Paragon Scientific
Viscosity standards and refractive index standards.
Plint and Partners Ltd
Tribology testing division.
vPro Servers - Link Exchange Directory
