QLR hybrid seal

QLR hybrid seal for the most extreme applications of your conveyor rollers

The innovative conveyor roller technology for the bulk material handling has been continuously developed in close cooperation with conveyor operators. The patented Küpper QLR hybrid seal has proven itself for years, even under the most extreme operating conditions.

This seal was specially developed for the bulk material handling and guarantees reliable protection of the rolling bearings against water and dust.

QLR seals enable a service life of up to 10 years

By using high-quality materials for extreme loads in combination with 100% grease filling of the specially designed multi-chamber labyrinth with an integrated V-ring, a service life of up to 10 years can be ensured.

Lowest running resistance with the highest possible tightness

The particular challenge for every conveyor roller seal, in addition to good protection against water and dirt ingress, is the need to contribute as little as possible to the running resistance of the conveyor roller. For this reason, the QLR hybrid seal uses components that are matched to each other with particularly low friction. This not only reduces wear on the conveyor rollers and the conveyor belt, but also reduces the energy consumption of the entire belt conveyor.