# NTN 6804ZZ Deep Groove Ball Bearing - 20 mm Bore, Double Shielded - MROSupply.com

***NTN 6804ZZ 6800 series single-row deep groove ball bearing with 20 mm bore and double steel shields. ZZ shields provide contact-free protection against contaminants while maintaining low friction for high-speed operation. Suitable for light-duty applications including small electric motors, power tools, and instrumentation.***



## Product details:

- Catalog number: 6804ZZ
- SKU: 830620
- Price: ***$94.96*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Thin Section Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/thin-section-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.037 lb


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


## Product attributes;

  
- B (in): 0.2756
  

  
- Ball Material: Steel
  

  
- Ball material: Steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Steel
  

  
- Cage material: Steel
  

  
- Cage Type: Pressed
  

  
- Cage type: Pressed
  

  
- Configuration: One
  

  
- D (in): 1.2598
  

  
- d (in): 0.7874
  

  
- Da max: 1.1811 in
  

  
- da max: 0.8858 in
  

  
- da min: 0.8661 in
  

  
- Dynamic Load Rating: 1000 lbf
  

  
- Dynamic load rating: 1000 lbf
  

  
- Enclosure: Double Shielded
  

  
- Factor: 15.5
  

  
- I.D.: 20 mm
  

  
- Limiting Speed - Grease: 21000 RPM
  

  
- Limiting speed - grease: 21000 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 32 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 0
  

  
- r (in): 0.0118
  

  
- Radial Internal Clearance: CN
  

  
- Radial internal clearance: CN
  

  
- ras max: 0.0118 in
  

  
- Seal material: None
  

  
- Seal type: None
  

  
- Static Load Rating: 555 lbf
  

  
- Static load rating: 555 lbf
  

  
- Type: Deep Groove Ball Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048444/1149_S_Mp8Gsc0.png)
## Alternate products to `NTN 6804ZZ Deep Groove Ball Bearing - 20 mm Bore, Double Shielded - MROSupply.com`:
- [NSK 6804ZZ shielded deep groove ball bearing with 20 mm bore and 32 mm OD. Double metal shields (ZZ) protect against contaminants. Pressed steel cage. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034516/as-markdown/)
- [Nachi Bearing 6804ZZE Deep Groove Ball Bearing with 2 Shields](https://www.mrosupply.com/products/207907/as-markdown/)
- [Koyo 6804 ZZ single-row deep groove ball bearing with 20 mm bore, 32 mm OD, and 7 mm width. Double shielded with steel shields for contaminant protection. Suitable for electric motors, pumps, and general rotating machinery.](https://www.mrosupply.com/products/1495093/as-markdown/)
- [FAG 61804-2Z-HLC Generation C deep groove ball bearing with 20mm bore and double shielded enclosure. Designed for high-speed applications, this bearing offers reduced friction and improved running characteristics. Double shielded seals provide effective contaminant protection.](https://www.mrosupply.com/products/2175271/as-markdown/)






## 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.


- What is the difference between deep groove and angular contact ball bearings?: Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors.
Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes.
If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.