Molded oil bearing
Save service costs with suitable rolling bearings
Due to frequent cleaning cycles in food industry equipment, conventional bearings often only have a short service life. A food manufacturer replaced them with Molded Oil bearings from NSK, tripling their service life and saving more than 52,000 euros per year.
At a British food manufacturer, the standard deep groove ball bearings in a seven-lane conveyor system only lasted four months. The reason for this was that water entered the bearings during the daily thorough cleaning cycles. This resulted in costly maintenance work and damage to the conveyor belts.
A production downtime of 14 hours had to be estimated for each bearing replacement, and two technicians had to spend twelve hours each on assembly and disassembly. With a total of 84 bearings that had to be replaced three times a year, this resulted in a considerable amount of maintenance work and significantly too much downtime for the system.
The user of the conveyor system commissioned NSK to check the bearings and the ambient conditions. The recommendation was to replace the roller bearings with stainless steel bearings with Molded Oil lubrication and DU seals on both sides.
These bearings are ideally suited for applications with heavy water contact. They are equipped with NSK's own oil-impregnated material, which consists of lubricating oil and an oil-related polyolefin resin. The lubricant is continuously released by this material - which prevents water ingress - over long periods of time. In addition, the operating environment remains clean because no grease escapes and no oil needs to be refilled. The highly efficient sliding DU seals on both sides also contribute to an increase in bearing service life under unfavorable environmental conditions.
As a result, the service life of the bearings tripled to twelve months, and bearing-related service costs (including downtime) were reduced by more than 52,000 euros per year. as
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