# Timken 2729-3 Precision Tapered Roller Bearing Cup, Class 3, <4 in OD - MROSupply.com

***Timken 2729-3 precision tapered roller bearing cup (outer ring) with Class 3 (ABEC 5 equivalent) precision rating, designed for applications requiring high accuracy and reduced runout. This single cup is part of the 2729 series and falls within the under 4-inch outside diameter size class. It is engineered for use in precision gearboxes, pump shafts, and industrial machinery where exact cone and cup matching is critical for performance and longevity.***



## Product details:

- Catalog number: 2729-3
- SKU: 5060170
- Price: ***$152.03*** 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 Cups](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/taper-roller-bearing-cups/)
    - [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: 0.455 lb
- Returns: Yes


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


## Product attributes;

  
- 12.7 mm Redicoat: Yes Series:450000 Shaft Size:2.75 in
  

  
- 89.992 mm Outer Diameter: 3.5480 in
  

  
- 90.119 mm Overall width: 0.5 in
  

  
- Disclaimer: CAD Models / Sales Drawings are accurate envelope dimensions. Internal features such as lip position may vary from seal to seal and are only representative.
  

  
- Housing bore: 3.543 in
  

  
- Housing Bore: 3.543 in 89.992 mm
  

  
- Inch/Metric: Inch
  

  
- Material: Fluoro-Elastomer
  

  
- Outer Diameter: 3.5480 in 90.119 mm
  

  
- Overall Width: 0.5 in 12.7 mm
  

  
- Redicoat: Yes
  

  
- Seal Type: 45
  

  
- Series: 450000
  

  
- Shaft Size: 2.75 in 69.85 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.