The customer uses lubricated brass bearings that run on customer's steel shafts (Figure 1). Application data were also provided. (Table 1).
The igus® laboratory carried out tests in order to compare the wear of different iglide® materials with competitors' bearings and find the ideal material for this application.
|Bearing material||Brass bearings (competitor's); iglide® Z; iglide® Q|
|Movement||Displacement: tumbling (with bulldozer effect)|
|Speed||0.49 f/s (corresponds to 74 rpm in the test)|
|Cycle||4 rotations (10 s), 90 s pause|
|Load||435 psi to 4,134 psi (increases every time a rotation is completed)|
iglide® Z bearings, iglide® Q bearings and competitors' bearings made of brass were tested dry as well as with lubrication on the customer's steel shaft; p = 14.67 MPa (2,128 psi ); n = 74 RPM
Marks on the bearings and shaft were visible.
There are almost no visible signs of damage on the sliding surface.
The bearings have a few marks on the inner diameter surface caused during initial wearing-in of the bearings.
In this test, the iglide® Q material showed the least amount of wear and had the best results in the test bay.
The worst results were exhibited by the tested brass bearings due to the high level of bearing wear and the damage to the shaft.
We would be happy to also test your individual specific application. Just use the contact form!
igus® develops polymer materials for new applications in the area of bearing tribology. Base polymers, solid lubricants and reinforcing materials are combined to achieve the perfect bearing properties.
These are confirmed in laboratory tests based on real conditions in practice in order to improve the materials used.