Are Revolubes really so good?
To answer the question, we have conducted a simple experiment that can be carried out on any lubricant or grease to visually and quantitatively compare their lubricative properties.
In this test a stationary bearing’s roller of a diameter of 9.5 mm is pressed against a rotating cylinder with increased force (measured on a scale), until it reaches a value at which the lubricating wedge is broken and both the roller and the cylinder become welded together.
The dynamometer was installed on a quasi - falex lever, with a ratio of 10:1 – meaning, the actual force pressing the roller against the cylinder was 10 times greater than the force indicated by the scale. The lubricative performance was assessed by the size and depth of groove formed on the stationary roller.
At the first instance, test was carried out without using any lubricant. The welding force at the contact surface was 30 [N].
At the second attempt the pair was lubricated with a popular, widely accessible chain lube. Breaking the lubricating wedge and welding the two parts occurred at a force of 35 [N].
The third test was conducted using Revolube. With a maximum force of 150 [N], which could have been applied to the system, the rotation could not be stopped, constituting a preserved lubrication wedge. Moreover, the value of the friction force was not substantially increased, even with the significant load differences. The ampere-meter, which indicated the value of current flowing to the electric motor driving the cylinder, the indicated value increased only slightly (about 1 [A]), against a significant change in force - from 30 [N] to 150 [N].
Finally, it can be seen that the mark of the groove was significantly smaller in the instance of Revolube, as illustrated in table and pictures below.
|Grease tested||Value of the limit force [N]||Size of the groove in the roller [mm]|
|1. No grease||300||9x5|
|2. Popular chain lube||350||8x4|
|3. Grease Revolube||>1500||4x2,5|