# Timken QAFL11A203ST Spherical Roller Flange Bearing Unit, 4-Bolt, Frame 11 - MROSupply.com

***Timken QAFL11A203ST is a four-bolt flange mounted spherical roller bearing unit. This housed unit features a heavy-duty cast iron housing and a spherical roller bearing insert designed for high radial load capacity and self-alignment. It is suitable for industrial applications such as conveyors, fans, and gearboxes where misalignment and shock loads are present.***



## Product details:

- Catalog number: QAFL11A203ST
- SKU: 5986333
- Price: ***$330.84*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [4-Bolt Flange](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/flanged-mounted-bearings/4-bolt-flange/)
    - [Flanged Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/flanged-mounted-bearings/)
    - [Mounted Roller Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)- View suggested `Dodge` alternative
  [Dodge 070437 F3R-S2-107R three-bolt flange mounted spherical roller bearing with 1-7/16" bore. S-2000 series, Springlok collar mount, cast iron housing, non-expansion (fixed). Rated for 21,000 lbf static load, 2,900 rpm max speed, sensor-ready, and](https://www.mrosupply.com/products/133507/as-markdown/)
- Unit of measure: each
- Returns: Yes


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


## Product attributes;

  
- 0.038 mm Shaft size type: Imperial Y1 - Geometry Factor:2.74 Y2 - Geometry Factor:4.08 e - Geometry Factor:0.25
  

  
- 0.040 mm Shaft Size: 2 3/16 in Shaft Tolerance:0.0015 in
  

  
- 0.065 mm Pre Install Clearance Min: 0.0016 in
  

  
- 16 mm Dimension KA: 1.13 in
  

  
- 162.1 mm Dimension J (Bolt Size): 0.625 in
  

  
- 28.7 mm Dimension L Exp: 3.36 in
  

  
- 3.8 mm Dimension SA: 3.13 in
  

  
- 79.5 mm Eng Internal Radial Clearance - Max: 0.0026 Eng Internal Radial Clearance - Min:0.0016 Engineering group:Mounted Bearing Float:0.050 in
  

  
- 82.6 mm Dimension BC: 6.38 in
  

  
- 83.3 mm Dimension RA: 0.15 in
  

  
- 85.3 mm Dimension L Fix: 3.28 in
  

  
- Bearing number: 22211 C - Dynamic Load (Basic):31400 lbf 140000 N C0 - Static Load:31900 lbf 142000 N Dimension:3.25 in
  

  
- Locking: Single Concentric
  
## Product documents / software:

- [Single Concentric Four Bolt Square Flange Block](https://documents.mrosupply.com/product_documents/59/83/5983967/qafl11a203s_gve0Yrn)

## 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.