# Koyo 6411 Deep Groove Ball Bearing - 55 mm Bore, Open Type, 140 mm OD, 33 mm Width - MROSupply.com

***Koyo 6411 deep groove ball bearing with 55 mm bore, 140 mm OD, and 33 mm width. Open type, single-row radial design for general industrial rotating equipment such as electric motors, pumps, and fans.***



## Product details:

- Catalog number: 6411
- SKU: 1495057
- Price: ***$219.98*** 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: 2.320 lb
- UPC: 60579036832


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


## Product attributes;

  
- Bore: 2.165 in / 55 mm
  

  
- Brand: KOYO
  

  
- Harmonized Tariff Code: 8482.10.50.68
  

  
- Inch - Metric: Metric
  

  
- Internal Clearance: C0-Medium
  

  
- Internal Special Features: No
  

  
- Manufacturer Item Number: 6411
  

  
- Maximum Capacity / Filling Slot: No
  

  
- Outer Race Width: 1.299 Inch / 33 Millimeter
  

  
- Outside Diameter: 5.512 Inch / 140 Millimeter
  

  
- Precision Class: ABEC 1 / ISO P0
  

  
- Rolling Element: Ball Bearing
  

  
- Snap Ring: No
  

  
- Type: Single Row Ball Bearings
  

  
- UNSPSC: 31171504
  
## Product documents / software:

- [drawing](https://documents.mrosupply.com/product_documents/68/6802/010_1.jpg)
## Alternate products to `Koyo 6411 Deep Groove Ball Bearing - 55 mm Bore, Open Type, 140 mm OD, 33 mm Width - MROSupply.com`:
- [NTN 6411 is a 64 series single-row deep groove ball bearing with a 55 mm straight bore. Open design with no seals or shields. Suitable for general industrial rotating equipment such as electric motors, pumps, and fans.](https://www.mrosupply.com/products/283944/as-markdown/)
- [SKF 6411/C3 deep groove ball bearing, 55mm bore, C3 greater-than-normal clearance. Sheet metal cage, bearing steel construction. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/320179/as-markdown/)
- [SKF 6411 is a 55mm bore deep groove ball bearing from the 6400 series. It features an open configuration with standard clearance and a sheet metal cage. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/320178/as-markdown/)
- [FAG 6411 deep groove ball bearing with 260mm bore and 480mm OD. This open bearing is designed for high radial and moderate axial loads. Suitable for a wide range of industrial applications requiring reliable performance.](https://www.mrosupply.com/products/2171397/as-markdown/)
- [NTN 6411C3 64 series single-row deep groove ball bearing with a 55 mm straight bore. Open enclosure, steel cage, and C3 internal clearance. Constructed from high carbon chrome steel for general industrial rotating equipment such as electric motors, pumps, and fans.](https://www.mrosupply.com/products/278337/as-markdown/)
- [NSK 6411C3 deep groove ball bearing with 55 mm bore and C3 clearance. Open design with no seals or shields for high-speed operation and easy relubrication. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034477/as-markdown/)
- [FAG 6411.C3 deep groove ball bearing with 55mm bore and 140mm OD. Features C3 internal clearance for applications requiring higher operating temperatures or interference fits. Suitable for high-speed and moderate load applications. Precision German engineering from Schaeffler.](https://www.mrosupply.com/products/2176370/as-markdown/)

## 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.