Opposing rotary partner

Normally, for a slide bearing, the shaft acts as the opposing rotary partner. When choosing theshaft it is important to consider the surface roughness, the thermal conductivity and the hardness.

Mötlopspartner/axel, illustration av ytfinhet.The recommended surface roughness for a shaft, which is to run in a slide bearing, is a meansurface deviation of Ra = 0.2-1.6 μm and an average surface deviation, Rz = 1.25-8 μm. Thesevalues are only guidelines that can vary depending on the application. If a slide bearing is to beused in a measuring machine, with high requirements for precision, a fine tolerance is neededwhich requires a finer surface. We recommend that shafts with values higher than Rz = 4 μmare not used.

Drawn shafts have been used with good results, especially with axial movements.

In a bearing, where the surrounding temperature and friction are such that they generate hightemperatures, a shaft with good thermal conductivity should be used.

The surface hardness of the shaft, where possible, should exceed 50 HRC.

Company in Sweden
D&E Bearings
D&E Bearings Oy
Lozyska Slizgowe
Wojciech Modzelewski