# NTN 51113 Thrust Ball Bearing - 65 mm Bore, Single Direction, Straight Bore - MROSupply.com

***NTN 51113 single direction thrust ball bearing with a 65 mm straight bore. Designed for axial loads in one direction, this bearing features a separable design for easy mounting and dismounting. Suitable for applications such as machine tool spindles, clutches, and vertical shafts.***



## Product details:

- Catalog number: 51113
- SKU: 283318
- Price: ***$88.42*** 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: 0.687 lb


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


## Product attributes;

  
- 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): 3.5433
  

  
- d (in): 2.5591
  

  
- d1: 3.5433 in
  

  
- D1: 2.6378 in
  

  
- Da max: 3.1496 in
  

  
- da min: 3.1496 in
  

  
- Dynamic Load Rating: 9350 lbf
  

  
- Dynamic load rating: 9350 lbf
  

  
- Enclosure: Open
  

  
- I.D.: 65 mm
  

  
- Limiting Speed - Grease: 2400 RPM
  

  
- Limiting speed - grease: 2400 RPM
  

  
- Limiting Speed - Oil: 3500 RPM
  

  
- Limiting speed - oil: 3500 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 90 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Outside Ring Type: Straight
  

  
- Precision: ISO class 0
  

  
- r (in): 0.0394
  

  
- Radial Internal Clearance: CN
  

  
- Radial internal clearance: CN
  

  
- ras max: 0.0394 in
  

  
- Seal material: None
  

  
- Seal type: None
  

  
- Static Load Rating: 26300 lbf
  

  
- Static load rating: 26300 lbf
  

  
- T (in): 0.7087
  

  
- Type: Thrust Ball Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048886/1264_S_mICK0xq.png)
## Alternate products to `NTN 51113 Thrust Ball Bearing - 65 mm Bore, Single Direction, Straight Bore - MROSupply.com`:
- [SKF 51113 is a 65mm bore thrust ball bearing from the 51 series. It features a sheet metal cage and is constructed from bearing steel. Designed for axial loads in one direction, it is suitable for general industrial applications.](https://www.mrosupply.com/products/320246/as-markdown/)
- [Rollway 51113 65 mm Bore Size, 90 mm Outside Diameter, Thrust Ball Bearing, 52100 Bearing Steel, Normal Radial Clearance](https://www.mrosupply.com/products/2302267/as-markdown/)
- [NSK 51113 thrust ball bearing with 65 mm bore. Designed for pure axial loads in vertical-shaft applications. Backed by NSK's precision-bearing engineering heritage.](https://www.mrosupply.com/products/5032806/as-markdown/)
- [FAG 51113 single direction thrust ball bearing with 65mm bore and 90mm OD. Designed for axial loads in one direction, this bearing features a separable design for easy mounting and dismounting. Suitable for moderate-speed applications requiring precise axial positioning.](https://www.mrosupply.com/products/2171492/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.