In its in-house test laboratory, the Cologne motion plastics® specialist igus®, compared its cost-effective and completely lubrication-free drylin® SAW linear units with a competitor's product in a test of wear and functional performance. The nut of the competitor's rail broke after only 8,040 cycles. The drylin® SAW unit, in contrast, continued functioning perfectly even after more than 90,000 cycles at four times the speed.

Test parameter	Competition	igus®
Strokes	125 mm	130 mm
Axial load	50 N	From 25N to 150N
Speed	50rpm	400rpm (50% ED)
Test run	8,040 cycles	> 90.000
Testing distance	2km	23km
Test result	Failed	Still functions