# NTN 51411 Thrust Ball Bearing - 55 mm Bore, Single Direction, Straight Bore - MROSupply.com

***NTN 51411 is a single-direction thrust ball bearing with a 55 mm bore and straight bore design. It accommodates axial loads in one direction and is suitable for vertical shaft applications in machine tools, gearboxes, and industrial machinery.***



## Product details:

- Catalog number: 51411
- SKU: 829920
- Price: ***$489.80*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Ball Thrust Bearings](htts://www.mrosupply.com/bearings/ball-bearings/ball-thrust-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 5.556 lb
- UPC: 4547359307382


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


## Product attributes;

  
- Bore type: Round
  

  
- Enclosure: Open
  

  
- Height: 4.724
  

  
- I.D.: 55 mm
  

  
- Length: 4.724
  

  
- Limiting speed - grease: 1300 RPM
  

  
- Limiting speed - oil: 1800 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 120 mm
  

  
- Operating temperature range: -40 to 250 F
  

  
- Radial internal clearance: CN
  

  
- Width: 1.8898
  

## Alternate products to `NTN 51411 Thrust Ball Bearing - 55 mm Bore, Single Direction, Straight Bore - MROSupply.com`:
- [SKF 51411 is a 55mm bore thrust ball bearing with a sheet metal cage. Designed for axial loads in one direction, it accommodates moderate speeds and is suitable for vertical shaft applications in gearboxes and machine tools.](https://www.mrosupply.com/products/320261/as-markdown/)
- [NSK 51411 thrust ball bearing with 55 mm bore and pressed steel cage. Designed for pure axial loads in vertical-shaft applications such as pumps and turbine drives. Backed by NSK's precision-bearing engineering heritage.](https://www.mrosupply.com/products/5032881/as-markdown/)
- [FAG 51411 single direction thrust ball bearing with 10mm bore and 32mm OD. Designed for axial loads in one direction, this bearing offers reliable performance in industrial applications. Manufactured by Schaeffler, ensuring precision and durability.](https://www.mrosupply.com/products/2171553/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.