# Koyo 3NC6318ZZ Deep Groove Ball Bearing - 90 mm Bore, Double Shielded, C3 Clearance - MROSupply.com

***Koyo 3NC6318ZZ is a 6300 series single-row deep groove ball bearing with a 90 mm straight bore. It features double steel shields and C3 internal clearance. Designed for electric motors, pumps, and general rotating machinery.***



## Product details:

- Catalog number: 3NC6318ZZ
- SKU: 1494455
- Price: ***$2,668.97*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Koyo Bearing](https://www.mrosupply.com/brands/koyo-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: 4.260 lb


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


## Product attributes;

  
- Bearing Material: Ceramic
  

  
- Bore Diameter: 90 mm
  

  
- Closure Type: Non-Contact Double Shielded
  

  
- Dynamic Load Capacity: 178 kN
  

  
- Maximum RPM: 3500 rpm Grease
  

  
- Number of Rows: 1
  

  
- O.D.: 190 mm
  

  
- Operating Temperature Range: -30 to 120 deg C
  

  
- Series: EXSEV
  

  
- Static Load Capacity: 107 kN
  

  
- Type: Cylindrical Bore
  

  
- Width: 43 mm
  


## Product's reviews:
- Great service - great items at great price
- Koyo roller bearing inner ring - Good product.
- Admin assistance - good product!




## 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.