# NTN 63311ZZC3/EM Deep Groove Ball Bearing - 55 mm Bore, Double Shielded, C3 Clearance, Machined Brass Cage - MROSupply.com

***NTN 63311ZZC3/EM is a 63 series single-row deep groove ball bearing with a 55 mm straight bore. It features double shielded steel enclosures, C3 internal clearance, and a machined brass cage. Constructed from high carbon chrome steel, this bearing is suitable for electric motors, pumps, and general industrial rotating machinery.***



## Product details:

- Catalog number: 63311ZZC3/EM
- SKU: 278410
- Price: ***$265.53*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Single Row Angular Contact Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/single-row-angular-contact-bearings/)
    - [Angular Contact Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 4.850 lb
- UPC: 4547359583281


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


## Product attributes;

  
- Axial Static Load Rating: 10116 lbf
  

  
- Axial static load rating: 10116 lbf
  

  
- B (in): 1.9370
  

  
- Ball Material: Through Hardened Steel
  

  
- Ball material: Through hardened steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Pressed Steel
  

  
- Cage material: Pressed steel
  

  
- Cage Type: Pressed
  

  
- Cage type: Pressed
  

  
- Configuration: One
  

  
- D (in): 4.7240
  

  
- d (in): 2.1650
  

  
- Dynamic Load Rating: 17873 lbf
  

  
- Dynamic load rating: 17873 lbf
  

  
- Enclosure: Metal Shield - Both Sides
  

  
- Height: 4.724
  

  
- I.D.: 55 mm
  

  
- Length: 4.724
  

  
- Limiting Speed - Grease: 5800 RPM
  

  
- Limiting speed - grease: 5800 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 120 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Outside Ring Type: 0
  

  
- Precision: ISO class 0
  

  
- r (in): 0.1181
  

  
- Radial Dynamic Load Rating: 17872 lbf
  

  
- Radial Internal Clearance: C3
  

  
- Radial internal clearance: C3
  

  
- Seal material: None
  

  
- Seal type: None
  

  
- Static Load Rating: 10117 lbf
  

  
- Static load rating: 10117 lbf
  

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

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048444/1149_S_Mp8Gsc0.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/63/63311ZZC3/EM/bearingfinder_2d_pdf_fixed_63311ZZC32FEM_Dyoq9lw.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.


- 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.