What’s the common material for swing bearing?

Common materials for swing bearing
Materials for swing bearing rings and rolling elements
Under normal circumstances, the slewing ring rolling element adopts integrally hardened carbon-chromium bearing steel. Made of GCr15 or GCr15SiMn steel;
The slewing ring is made of surface hardened steel. When the user has no special requirements, it is generally made of 50Mn steel, but sometimes in order to meet the needs of the host in some special applications, other grades of surface can also be selected according to the specific use conditions provided by the user Hardened steel, such as 42CrMo, 5CrMnMo, etc.

Material for cage of swing bearing
Cages for slewing bearings have integral, segmented, and isolated block structures. The integral and segmented cages are made of No. 20 steel or ZL102 cast aluminum alloy.
The spacer type of swing bearing is made of polyamide 1010 resin and ZL102 cast aluminum alloy. In recent years, with the continuous development of the material industry, nylon GRPA66.25 has also been popularized and applied in the design of segmented cages.

Material for swing bearing seal
The sealing ring of swing bearing is made of oil-resistant nitrile rubber.
The code of the ferrule material and the supply status of the blank is in accordance with the table. "T" in the table indicates that the ferrule is supplied in a quenched and tempered state, and "Z" means that the ferrule is supplied in a normalized state.

The diameter of the center circle of the rolling element of the bearing is 3150mm, the ball diameter is 75mm, the gear modulus m=20mm, the ring material is 50Mn, and the blank material is an internal tooth four-point contact ball manufactured in a normalized state. The swing bearing is expressed as 013.75. 3150.12

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