igus® GmbH

DryLin ® | Sliding instead of rolling

DryLin ® is a range of maintenance-free, lubrication-free linear slide bearings consisting of four main product lines. Principal features in addition to zero maintenance are strength and resistance to external influences such as soiling, moisture, chemicals, heat and impact.

• Maintenance-free
• Dry running performance
• Resistant to dirt, dust or moisture
• When weight reduction is important
• For short stroke applications
• Self-lubricating
• Extremely quiet operation
• Wear resistant
• Corrosion resistant
• Resistant to shocks and vibrations
• Low friction value
• High static load capacity
• High speed and high acceleration

Lower Surface Pressure
DryLin® linear bearings work through the use of sliding elements, in contrast to the design of recirculating ball bearing systems. This results in a larger contact surface subjected to a much lower pressure.

The advantages are decisive:
Compatibility with non-hardened shafts and even non-metallic counterparts complete avoidance of seizure
Dry running, without Lubrication Designed for dry running, DryLin® linear bearing systems run without
grease or oil; this permits operation even in the presence of heavy soiling or sand (Pic. 60.1). During motion, the contact surfaces push foreign particles outward, i.e. the slides’ front surface acts like a scraper. As a result, the contact surfaces remain clean.

No Minimum Stroke Lengths

Compared with recirculating ball bushings, DryLin® bearings’ operating characteristics do not depend on the length of travel, nor do they impose any requirements concerning minimum stroke.
Even applications with extremely short strokes are no problem for DryLin® linear bearings.

Quiet Operation

The smooth operation is also attributable to the difference between rolling and sliding (Graph 60.1): No mechanical rolling against hard surfaces, no collisions between balls resulting in loud running noises.
Sliding motion is extremely quiet, only a low "swishing" noise is heard.