These are quality precision rollers.
The end-caps, gauged to ISO M7, are welded to the tube forming a monolithic structure (UNIBLOC).
The permanently lubricated radial rigid ball bearings are of the 6204-6205-6206-6308 series, of the best brands.
The bearing protections are guaranteed by a multiple centrifugal labyrinth with cover cap combined with external cap (contact-less), while an internal seal retains a big quantity of grease. All parts are made of anticorrosive thermoplastic materials.
The ground steel shaft is internally threaded for screw fixing or have a slot execution.
The application temperatures range from -20° C to + 100° C.
This series features high strength, perfect balancing and concentricity, minimum starting resistance, precision and suitability.