{"id":3812,"date":"2021-11-29T15:45:54","date_gmt":"2021-11-29T15:45:54","guid":{"rendered":"https:\/\/tribologie-mannheim.de\/equipment\/tannert\/"},"modified":"2022-12-09T09:35:01","modified_gmt":"2022-12-09T09:35:01","slug":"tannert","status":"publish","type":"page","link":"https:\/\/tribologie-mannheim.de\/en\/equipment\/tannert\/","title":{"rendered":"Tannert"},"content":{"rendered":"\t\t
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<\/p>\n

The “Tannert” sliding friction test rig<\/h2>\n

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The sliding friction wear indicator (modified Tannert) is a standard test device for investigating the friction behavior in slow oscillating sliding movements.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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The tests can be run dry or lubricated. A sliding tongue is moved back and forth between two sliding blocks oscillating at low speed. Instead of the sliding blocks (surface contact), adapters with cylindrical rollers can also be used as test specimens (line contact).<\/p>\n

In the load increase run, the normal force is increased after each movement cycle until stick-slip (jerk sliding) occurs or the maximum load is reached.<\/p>\n

The friction force is continuously recorded on a PC. In addition, sliding speed and downtimes can be varied in the test.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Test bench parameters<\/strong><\/span><\/td>\n <\/td>\n<\/tr>\n
Sliding speed<\/td>\n0.4 mm\/min. up to 20 mm\/s (standard 0.2 mm\/s)<\/td>\n<\/tr>\n
Load<\/td>\n1 to 1,800 Newton<\/td>\n<\/tr>\n
Temperature<\/td>\n-10 to 100\u00b0C (with heating cartridge in the sample 280 \u00b0C)<\/td>\n<\/tr>\n
Movement types<\/td>\noscillating gliding<\/td>\n<\/tr>\n
Friction conditions<\/td>\nDry friction, mixed friction<\/td>\n<\/tr>\n
Contact geometry<\/td>\nSurface or line contact<\/td>\n<\/tr>\n
Measured variables<\/td>\nFrictional force, optical surface assessment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Other tests<\/h4>\n