SKF support rollers are supplied greased. They are filled with the appropriate amount of a high-quality grease under clean conditions. The technical specifications of the grease are listed in table 1.
(R)STO design support rollers can be oil or grease lubricated. In applications where oil is used, SKF recommends thoroughly washing the initial grease fill from the bearing prior to operation.
Support rollers require little maintenance, but they should be relubricated regularly to achieve their full service life. SKF recommends relubrication while the initial grease fill still has its full lubricating properties. Support rollers used in applications where there are light loads, relatively low speeds and clean surroundings, can operate for long periods before relubrication is required. Support rollers that operate under contaminated and damp conditions at high speeds or at temperatures above 70 °C (160 °F) require more frequent relubrication. Full complement support rollers require more frequent relubrication.
SKF supplies all inner rings for support rollers with one lubrication hole, except for inner rings of the NNTR design support rollers, which have three lubrication holes when d ≤ 90 mm or six lubrication holes when d ≥ 100 mm. If suitable ducts are provided in the pin, the bearings are easy to relubricate.
For additional information about greases, refer to the section Lubrication.