Micro pitting contact fatigue testing machine

The rolling contact fatigue testing machine (micro pitting) is mainly used to study the micro pitting characteristics of rolling contact materials. The testing machine includes a main specimen axis and three auxiliary specimen axes, with three contact points on one main specimen. The testing machine applies a constant load to the specimen in rolling or rolling sliding contact, causing the contact surface to be subjected to cyclic line and point frictional contact pressure. By controlling and changing parameters such as load, speed, slip rate, time, friction partner material, surface roughness, hardness, etc., tests are conducted to evaluate the pitting contact fatigue life of materials.

1、 Main purpose

The rolling contact fatigue testing machine (micro pitting) is mainly used to study the micro pitting characteristics of rolling contact materials. The testing machine includes a main specimen axis and three auxiliary specimen axes, with three contact points on one main specimen. The testing machine applies a constant load to the specimen in rolling or rolling sliding contact, causing the contact surface to be subjected to cyclic line and point frictional contact pressure. By controlling and changing parameters such as load, speed, slip rate, time, friction partner material, surface roughness, hardness, etc., tests are conducted to evaluate the pitting contact fatigue life of materials.

This testing machine is suitable for the contact situation of moving parts of gears and rolling bearings, and can also be used as a simulation test method to evaluate the anti pitting or micro pitting performance of industrial gear oil or lubricating oil. The high frequency of contact conditions between the three surfaces of the testing machine can greatly shorten the testing time and improve testing efficiency.

2、 Main technical parameters

Test force range: 0-5000MPa

Test force indication error: ≤± 1%

Slip rate: 0 (pure rolling) -200% (pure sliding) (arbitrary setting)

Speed range: 5-3000rpm (stepless speed regulation)

Speed indication error: ≤± 10rpm

Contact methods: line contact and point contact

Friction medium: oil lubrication (oil circulation, measurable oil temperature, adjustable speed)

Measurement and Control Software: The software developed by the company is modularized and easy to operate. It can display and record test parameters such as test force, friction torque, speed, vibration intensity, running time, lubricating oil temperature, and friction coefficient in real time, and record, save, and print test curves

Shutdown modes: manual (with emergency stop button) and automatic (limit alarm shutdown: time, speed, friction torque, vibration signal, and oil temperature)