# NTN SAFD22520X3.7/16 Plummer Block - Split Housing, Ductile Iron, 3-7/16 in Bore, Heavy-Duty - MROSupply.com

***NTN SAFD22520X3.7/16 is a split plummer block with a ductile iron housing, designed for heavy-duty industrial applications. It accommodates a 3-7/16 inch bore and is suitable for use with spherical roller bearings in demanding environments such as mining, aggregate, and material handling.***



## Product details:

- Catalog number: SAFD22520X3.7/16
- SKU: 827508
- Price: ***$1,513.21*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [2-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/pillow-block-bearings/2-bolt-pillow-block-bearings/)
    - [Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/pillow-block-bearings/)
    - [Mounted Ball Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 71.800 lb


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


## Product attributes;

  
- A (in): 6.2500
  

  
- Bearing Number: 22220EAKW33
  

  
- Bearing number: 22220EAKW33
  

  
- Bearing Type: Spherical Roller Bearing
  

  
- d (in): 3.4375
  

  
- Dynamic Load Rating: 106000 lbf
  

  
- Dynamic load rating: 106000 lbf
  

  
- End Cover: MF307
  

  
- End Type: Open
  

  
- End type: Open
  

  
- H (in): 8.6250
  

  
- H Adapter Sleeve: HA320
  

  
- H1: 4.5000 in
  

  
- H2: 1.7500 in
  

  
- Housing Construction: 2 Piece
  

  
- Housing construction: 2 piece
  

  
- Housing Material: Ductile Iron
  

  
- Housing material: Ductile Iron
  

  
- Housing Number: SAFD520G2
  

  
- J Max.: 13.1250 in
  

  
- J Min.: 11.6250 in
  

  
- L (in): 15.2500
  

  
- Locking Device: Adapter
  

  
- Locking device: Adapter
  

  
- Lubrication: Relubricatable
  

  
- Max Rotational Speed: 3600 RPM
  

  
- Mounting Type: 2-Bolt
  

  
- n1: 1.7500 in
  

  
- n2: 1.0000 in
  

  
- Operating Temperature Range: -40 to 400 °F
  

  
- Operating temperature range: -40 to 400 ºF
  

  
- Performance: Heavy duty
  

  
- Seal Type: Triple
  

  
- Seal type: Triple
  

  
- SNW Adapter Sleeve: SNW20X3.7/16
  

  
- Stabilizing Rings: SR180X12C
  

  
- Stabilizing Rings (2 incl.): SR180X12C
  

  
- Static Load Rating: 111000 lbf
  

  
- Static load rating: 111000 lbf
  

  
- Triple Seal Rings: LER102
  

  
- Triple Seal Rings (2 incl.): LER102
  

  
- Type: Pillow Block Unit
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/29/75/2975944/Pillow-Blocks-Ductile-Iron-Housing-SAFD-Type_S_wh01AI6.png)






## 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.