# Timken 18690-90016 Precision Tapered Roller Bearing Matched Set, <4 in OD, Class 3 - MROSupply.com

***Timken 18690-90016 precision matched tapered roller bearing assembly, cone 18690 paired with cup match code 90016. Single-row Class 3 (ABEC 5) precision bearing with cup OD under 4 inches. Designed for high-accuracy applications requiring controlled runout, such as industrial gearboxes, pump shafts, and precision machinery.***



## Product details:

- Catalog number: 18690-90016
- SKU: 5065951
- Price: ***$709.02*** 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: 0.707 lb
- Returns: Yes


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


## Product attributes;

  
- 0.3 mm Cage-cone frontface clearance: 0.09 in
  

  
- 17.463 mm Cup backface backing diameter: 2.8 in
  

  
- 2.3 mm Cone backface backing diameter: 2.2 in
  

  
- 51 mm Cone part number: 18690 Cone width:0.6875 in
  

  
- 56 mm Cone frontface backing diameter: 2.01 in
  

  
- 71.12 mm Cup frontface backing diameter: 2.94 in
  

  
- 74.68 mm Cup outer diameter: 3.1250 in
  

  
- 79.375 mm Cup part number: 18620 Cup width:0.5313 in
  

  
- Cage material: Stamped Steel Cage-cone backface clearance:0.01 in
  

  
- I.D.: 1.8125 in / 46.038 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.