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Ferrule and rolling material
In general, the Slewing Bearing rolling elements are integrally hardened carbon-chromium bearing steel. The grade is made of GCr15 or GCr15SiMn steel; the slewing bearing ring is made of surface hardened steel. When the user has no special requirements, it is generally made of 50Mn steel, but sometimes it can be provided according to the needs of some special applications. For the specific conditions of use, other grades of surface hardened steel, such as 42CrMo, 5CrMnMo, etc., are selected.
The cage for the slewing bearing has an integral form, a segmented type, an isolation block type and the like. The integral and segmented cages are made of 20 gauge steel or ZL102 cast aluminum alloy. The spacer block is made of polyamide 1010 resin, ZL102 cast aluminum alloy, and the like.
The material for the slewing bearing seal is made of oil-resistant rubber or NBR.
The code of the ferrule material and the blank supply status is as specified in the table. The [T" in the table indicates that the ferrule blank is supplied in the quenched and tempered state, and the [Z" indicates that the ferrule blank is supplied in the normalized state.