# Timken 21306KEJW33C3 Spherical Roller Bearing 30mm Tapered Bore Steel Cage W33 C3 Clearance - MROSupply.com

***Timken 21306KEJW33C3 is a tapered bore spherical roller bearing with a 30mm bore and a 1:12 taper, requiring an adapter sleeve for mounting. It features a pressed steel cage (EJ), W33 lubrication groove and holes, and C3 radial internal clearance for motor and general industrial applications. This self-aligning bearing supersedes part number 21306KCJW33C3.***



## Product details:

- Catalog number: 21306KEJW33C3
- SKU: 5116497
- Price: ***$178.31*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [Tapered Bore Spherical Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/spherical-roller-bearings/tapered-bore-spherical-roller-bearings/)
    - [Spherical Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/spherical-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)- View suggested `Nachi Bearing` alternative
  [Nachi Bearing 21306EXQW33KC3 21306 EXQW33K C3 BNLW](https://www.mrosupply.com/products/5899992/as-markdown/)
- Unit of measure: each
- Weight: 0.810 lb
- Returns: Yes


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


## Product attributes;

  
- 0.748 in Lubrication type: Standard Grease O.D. (in):72 mm 2.8346 Outer ring to clear radius:0.040 in Outer ring backing diameter:64.000 mm
  

  
- 0.748 in Reference thermal speed rating (grease): 7200 rpm Reference thermal speed rating (oil):8900 Static radial rating:56500 N
  

  
- 1.600 in Inner ring width: 19 mm
  

  
- 12700 lbf Superseded part: 21306KCJW33C3
  

  
- 15800 lbf Geometry factor: 0.0405 ISO factor:3.87 Inner ring to clear radius:0.040 in Inner ring backing diameter:41.000 mm
  

  
- 2.500 in Outer ring width: 19 mm
  

  
- Bore taper: 1/12
  

  
- Cage material: Steel
  

  
- Cage type: EJ
  

  
- Design unit: METRIC
  

  
- Dynamic radial rating (two-rows): 15800 lbf
  

  
- Geometry factor: 0.0405
  

  
- I.D.: 1.1811 in
  

  
- Inner ring "to clear" radius: 0.040 in
  

  
- Inner ring backing diameter: 1.600 in
  

  
- Inner ring width: 0.748 in
  

  
- ISO factor: 3.87
  

  
- O.D.: 2.8346 in
  

  
- Outer ring "to clear" radius: 0.040 in
  

  
- Outer ring backing diameter: 2.500 in
  

  
- Outer ring width: 0.7480 in
  

  
- Reference thermal speed rating (grease): 7200
  

  
- Reference thermal speed rating (oil): 8900
  

  
- Static radial rating: 12700 lbf
  

  
- Superseded part: 21306KCJW33C3
  
## Product documents / software:

- [Spherical Roller Bearings Steel Cage](https://documents.mrosupply.com/product_documents/51/16/5116497/21306kejw33c3_SEqGcOC)

## 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.