Needle rollers
Needle rollers are key to the improved performance. By using a longer roller, the contact rigidity of the rollers and the track surface increases. Using more thin bearings than ball bearings to support the load distributes that load more evenly and increases the roller guide’s load capacity. Also, the high number of thin bearings reduces the guide’s vibrations by 50%, due to the rolling elements (called waving) that affect the block,which improves precision.
The relatively large number of needle bearings also increases the guide’s dynamic friction and shortens the time needed for oscillations to converge. This makes the guide’s vibrational damping more than 1.5 times higher than that of conventional guide blocks.
