Sealing bearing points

Our plain bearings are generally insensitive to dirt and dust due to their lubrication-free dry operation. The reason is that dirt does not remain in the bearing point for very long in most applications but can run through it.

In applications with a very high dirt load e.g. in construction machines or agricultural engineering, however, this effect is not sufficient.

Dirt and dust put a huge strain on plain bearings and shafts. To prevent them from entering the bearing point in the first place, we have developed two additional safety concepts for our self-lubricating iglidur plain bearings:

Seals made of felt and radial shaft seals made of polymer. Both protect your bearing point from wear and premature failure, reduce your maintenance effort and minimise machine downtime, without any lubrication at all.

These are the advantages of felt seals

• Felt can be compressed strongly with minimal resistance
• Embedded dirt is only pressed against the shaft or housing with little force
• Rough tolerances and misalignments can be compensated
• During an initial lubrication, felt keeps the grease in the bearing point and prevents dirt from entering
• Low coefficient of friction (dry about 0.22µ against steel)
• Can be used over a wide temperature range