# NTN NN3008KC1NAP4 Double Row Cylindrical Roller Bearing - 40 mm Bore, Tapered Bore, P4 Precision - MROSupply.com

***NTN NN3008KC1NAP4 double-row cylindrical roller bearing with 40 mm bore and tapered bore (1:12). NN configuration has no flanges on the outer ring, allowing axial expansion. Machined brass cage and P4 precision class suit high-speed, high-accuracy applications such as machine tool spindles and precision rolling mills.***



## Product details:

- Catalog number: NN3008KC1NAP4
- SKU: 272130
- Price: ***$492.11*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Straight / Round Bore Cylindrical Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/cylindrical-roller-bearings/straight-round-bore-cylindrical-roller-bearings/)
    - [Cylindrical Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/cylindrical-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.657 lb


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


## Product attributes;

  
- B (in): 0.8268
  

  
- Bore Type: Tapered
  

  
- Bore type: Tapered
  

  
- C (in): 0.8268
  

  
- Cage Material: High Strength, 2 piece, Machined Brass
  

  
- Cage material: High strength, 2 piece, machined brass
  

  
- Configuration: Two
  

  
- D (in): 2.6772
  

  
- d (in): 1.5748
  

  
- Da max: 2.4409 in
  

  
- da min: 1.7717 in
  

  
- Db max: 2.4803 in
  

  
- Db min: 2.4409 in
  

  
- db min: 1.8504 in
  

  
- Dynamic Load Rating: 9800 lbf
  

  
- Dynamic load rating: 9800 lbf
  

  
- Enclosure: Open
  

  
- Ew: 2.4016 in
  

  
- I.D.: 40 mm
  

  
- Limiting Speed - Grease: 9700 RPM
  

  
- Limiting speed - grease: 9700 RPM
  

  
- Limiting Speed - Oil: 11000 RPM
  

  
- Limiting speed - oil: 11000 RPM
  

  
- Material: Hardened alloy steel
  

  
- O.D.: 68 mm
  

  
- Oil Hole: w/o Oil Hole
  

  
- Oil hole: w/o Oil Hole
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 4
  

  
- r (in): 0.0394
  

  
- Radial Internal Clearance: C1NA
  

  
- Radial internal clearance: C1NA
  

  
- ras max: 0.0394 in
  

  
- Static Load Rating: 12500 lbf
  

  
- Static load rating: 12500 lbf
  

  
- Taper: 1 to 12
  

  
- Type: Cylindrical Roller Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048540/1324_S_0BlDpF4.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.