# Timken QACW11A204SB Spherical Roller Mounted Unit, QACW Series, 4-Bolt Piloted Flange - MROSupply.com

***Timken QACW11A204SB is a spherical roller mounted unit with a 4-bolt piloted flange housing. This QACW series housed unit features a self-aligning spherical roller bearing insert designed for heavy-duty applications with potential shaft misalignment. The piloted flange mounting provides precise alignment and secure attachment to machinery frames.***



## Product details:

- Catalog number: QACW11A204SB
- SKU: 5985618
- Price: ***$370.00*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [Piloted Flange](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/flanged-mounted-bearings/piloted-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/)
- 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:2.95 Y2 - Geometry Factor:4.40 e - Geometry Factor:0.23
  

  
- 0.040 mm Shaft Size: 2 1/4 in Shaft Tolerance:0.0015 in
  

  
- 0.065 mm Pre Install Clearance Min: 0.0016 in
  

  
- 12 mm Dimension KA: 1.13 in
  

  
- 152.4 mm Dimension J (Bolt Size): 0.5 in
  

  
- 28.7 mm Dimension L Exp: 3.47 in
  

  
- 45.7 mm Dimension BC: 6 in
  

  
- 47 mm Dimension B Fix: 1.8 in
  

  
- 7.6 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 B Exp: 1.85 in
  

  
- 86.9 mm Dimension RA: 0.3 in
  

  
- 88.1 mm Dimension L Fix: 3.42 in
  

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

  
- Bearing Number: 22211
  

  
- C - Dynamic Load (Basic): 31400 lbf 140000 N
  

  
- C0 - Static Load: 31900 lbf 142000 N
  

  
- Dimension B Exp: 1.85 in 47 mm
  

  
- Dimension B Fix: 1.8 in 45.7 mm
  

  
- Dimension BC: 6 in 152.4 mm
  

  
- Dimension C: 3.25 in 82.6 mm
  

  
- Dimension D: 4.99 in 126.7 mm
  

  
- Dimension E: 4.24 in 107.7 mm
  

  
- Dimension F: 7.13 in 181.1 mm
  

  
- Dimension G: 5 in 127 mm
  

  
- Dimension H: 0.56 in 14.2 mm
  

  
- Dimension J (Bolt Size): 0.5 in 12 mm
  

  
- Dimension KA: 1.13 in 28.7 mm
  

  
- Dimension L Exp: 3.47 in 88.1 mm
  

  
- Dimension L Fix: 3.42 in 86.9 mm
  

  
- Dimension M: 2 in 50.8 mm
  

  
- Dimension N: 1.63 in 41.4 mm
  

  
- Dimension RA: 0.3 in 7.6 mm
  

  
- Dimension SA: 3.13 in 79.5 mm
  

  
- Dynamic Load (Basic): 31400 lbf
  

  
- e - Geometry Factor: 0.23
  

  
- Eng Internal Radial Clearance - Max: 0.0026
  

  
- Eng Internal Radial Clearance - Min: 0.0016
  

  
- Eng Internal Radial ClearancMax: 0.0026
  

  
- Eng Internal Radial ClearancMin: 0.0016
  

  
- Engineering Group: Mounted Bearing
  

  
- Float: 0.050 in 1.270 mm
  

  
- Full Timken Part Number: QACW11A204SB QACW11A204SC QACW11A204SEB QACW11A204SEC QACW11A204SEM QACW11A204SEN QACW11A204SEO QACW11A204SET QACW11A204SM QACW11A204SN QACW11A204SO QACW11A204ST
  

  
- Geometry Factor: 4.4
  

  
- Grease Lubrication - B/C/O Seal: 1600 rpm
  

  
- Grease Lubrication - M/N Seal: 2200 rpm
  

  
- Grease Lubrication - T Seal: 3200 rpm
  

  
- Housing Construction: Piloted Flange Cartridge
  

  
- Locking Style: Single Concentric
  

  
- Oil Lubrication - B/C/O Seal: 1600 rpm
  

  
- Oil Lubrication - M/N Seal: 2200 rpm
  

  
- Oil Lubrication - T Seal: 3800 rpm
  

  
- Pre Install Clearance Max: 0.0026 in 0.065 mm
  

  
- Pre Install Clearance Min: 0.0016 in 0.040 mm
  

  
- Shaft Size: 2 1/4 in
  

  
- Shaft Size Type: Imperial
  

  
- Shaft Tolerance: 0.0015 in 0.038 mm
  

  
- Static Load: 31900 lbf
  

  
- Y1 - Geometry Factor: 2.95
  

  
- Y2 - Geometry Factor: 4.40
  
## Product documents / software:

- [Single Concentric Piloted Flange Cartridge](https://documents.mrosupply.com/product_documents/59/83/5983628/qacw11a204s)

## 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.