ARVIS DRY RUNNING SELF-LUBRICATING BUSHES - DRSL
WHERE TO USE DRSL
Arvis DRSL bearings are primarily suitable for use where there is a demand for maintanance free operation, high load/low speed, high temperature or intermittent use. Suitable for rotation or linear movement.
Arvis DRSL bearings are manufactured from SAE660 which is a high grade bronze, with solid graphite plugs as a lubricant embedded into the bearing surface.
During installation the contact areas should eb smeared with grease. As soon as movemnent occurs the solid lubricant is deposited as a film all over the sliding surfaces. This then becomes a permanant film and is available immediately upon starting. The plugs are distributed in a specific pattern to suit the application and may cover up to 25-30% of the sliding surface area.
The compressive strength of the basic material is 240N/mm², but the maximum load for a finished bush is 24N/mm² (3625 psi) at 80 degrees Celsius ambient temperature is 300 degrees Celsius.
Arvis DRSL bearings will give maintenance free service if our reccomendations for the shaft material are followed. This should be corrosion resistant, with a fine turned or ground finish to better than Ra 1.6 µm, with minimum hardness of 200HB. For bearings working in high temperatures suitable material for the shaft would be stainless martensitic steel, hard chrome or stellite steel.
ARVIS PLUMMER BLOCKS OR BEARING HOUSINGS WITH DRSL
The following Arvis housings can be supplied with DRSL bushes in place of the standard material:- DIN505, DIN506, HB Series, EXALIGN, SAPB.