# Timken 543085-90030 Two-Row Tapered Roller Bearing Assembly, 8-12 in OD, Matched Set - MROSupply.com

***Timken 543085-90030 is a two-row tapered roller bearing assembly (TRB) with a matched cup and cone set designated by code 90030. This heavy-duty assembly falls within the 8-12 inch outside diameter class and is engineered for applications requiring high radial and axial load capacity, such as industrial gearboxes, heavy machinery, and large conveyor systems. The matched set ensures precise preload and runout control for optimal performance and extended service life.***



## Product details:

- Catalog number: 543085-90030
- SKU: 5075802
- Price: ***$19,083.28*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [Taper Roller Bearing Full Assemblies](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/taper-roller-bearing-full-assemblies/)
    - [Taper Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 26.970 lb
- Returns: Yes


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- 232 mm Cone part number: 543085 Cone width:1.2500 in
  

  
- 278.89 mm Cup outer diameter: 11.3125 in
  

  
- 287.338 mm Cup part number: 543115DC Design unit:Inch Related Assembly Number(s):543085-90030 543085-902A4 Series:543000 T - Bearing Width across Cones:2.7500 in
  

  
- 3.6 mm Cone backface backing diameter: 9.13 in
  

  
- 31.750 mm Cup frontface backing diameter: 10.98 in
  

  
- 50.800 mm Cage material: Stamped Steel Cage-cone backface clearance:0.14 in
  

  
- C - Double Cup Width: 2.0000 in
  

  
- I.D.: 8.5000 in / 215.900 mm
  
## Product documents / software:

- [Product Information](https://documents.mrosupply.com/product_documents/35/81/358135/apered-Single-Roller-Bearings---TS-Engineering_946wybP.pdf)

## Product's reviews:
- Best company to buy from - I always buy from MRO is a very reliable company to work with




## FAQ:

- How do I choose the right type of bearing for my application?: Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints.
For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials.
In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.