Stainless steel slewing bearing is usually produced for severe working conditions such as high moisture or outdoor environment. Slewing rings made of stainless steel are rust-resistant so have a longer service life.

Stainless steel material for slewing bearings also has different types, such as 304 and 440, so what's the difference between them? Check "Difference between 304 and 440".

BRS can produce MT series slewing bearing with stainless steel 9Cr18(440), below is the model MTO-170 four-point contact ball slewing bearing. It's easy to find the difference between stainless steel slewing bearings and bearing steel slewing rings. From the surface, stainless steel slewing rings have a frosted texture, while the GCr15 or 50Mn made slewing bearings have a polished surface.

Advantages of stainless steel bearings

1. Corrosion resistance, can work underwater or in a high moisture environment.
2. Washable. Stainless steel bearings can be washed, so convenient to arrange maintenance.
3. High wearability.
4. Sanitation. Stainless steel is naturally clean and non-corrosive, so many food processing machinery will use stainless steel bearings.

Stainless steel MTO-170 slewing bearing

Inner ring dia.: 170mm
Outer ring dia.: 310mm
Mounting height: 46mm
Weight: 15kg
Structure: four-point contact ball slewing bearing, with mounting holes.
Materials: 9Cr18 stainless steel
Clearance: Pre-load
Sealing: sealed both sides
Lubrication Type: Grease lubrication
Lubrication hole: Yes
Load direction: axial, radial, and tilting moment
Working temperature: -20℃~80℃

Besides choosing stainless steel as raw material for slewing bearings, there are other methods to improve bearings' anti-rust capability. Such as special surface treatment, below are some examples. BRS can produce customized types according to users' requirements too.