Shafting

The optimum shaft material for all iglide bearings is steel to 50Rc and the surface should have a finish of Ra=16-64 rms for rotational and 8-16 rms for linear motion. Such surface values ensure very low friction and wear. Higher roughness values have proven to increase wear.

If surfaces are too smooth, stick-slip and squeaking can occur. A rougher shaft will usually remedy the situation.


Aluminum and stainless steel shafting are relatively soft material and are often worn down by polymer bearings. If possible, use 400 Series stainless as it is more wear resistant. Iglide J and Iglide L280 are better suited for these shafts due to their material composition.

Plastic shafting can be used. The shaft should be of a different material than the Iglide bearing. Call igus for consultation.