# NTN 32021X Tapered Roller Bearing - 105 mm Bore, Single Row Metric Series, Open - MROSupply.com

***NTN 32021X single row metric tapered roller bearing with 105 mm straight bore. Open design with through hardened steel construction. Handles combined radial and axial loads in gearboxes, wheel hubs, and industrial machinery.***



## Product details:

- Catalog number: 32021X
- SKU: 281649
- Price: ***$121.92*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- 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: 5.335 lb
- UPC: 4547359528442


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


## Product attributes;

  
- a (Effective Load Center): -0.0197 in
  

  
- B (in): 1.3780
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- C (in): 1.0236
  

  
- Configuration: One
  

  
- d (in): 4.1339
  

  
- D (in): 6.2992
  

  
- da: 4.61 in
  

  
- Da: 5.91 in
  

  
- Da min: 5.63 in
  

  
- Db: 6.06 in
  

  
- db: 4.57 in
  

  
- Dynamic Load Rating: 45000 lbf
  

  
- Dynamic load rating: 45000 lbf
  

  
- e (Axial Load Factor): 0.44
  

  
- Enclosure: Open
  

  
- I.D.: 4.1339 in
  

  
- Limiting Speed - Grease: 2100 RPM
  

  
- Limiting speed - grease: 2100 RPM
  

  
- Limiting Speed - Oil: 2800 RPM
  

  
- Limiting speed - oil: 2800 RPM
  

  
- Lubrication: w/o Oil Hole
  

  
- Material: Through hardened steel
  

  
- O.D.: 6.2992 in
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision Rating: Class 0
  

  
- Precision rating: Class 0
  

  
- R (in): 0.08
  

  
- r (in): 0.0800
  

  
- Static Load Rating: 75500 lbf
  

  
- Static load rating: 75500 lbf
  

  
- Style: Cone & cup
  

  
- T (in): 1.3780
  

  
- Type: Tapered Roller Bearing
  

  
- Y0 (Axial Load Factor): 0.74
  

  
- Y2 (Axial Load Factor): 1.35
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/64/28/6428340/1671_S_FoPjfcD.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/32/32021X/bearingfinder_2d_pdf_fixed_32021X_R8i1eTi.pdf)






## 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.