# NTN TMB205 Bearing Accessory - Standard Small Size Ball Bearing, Open Type - MROSupply.com

***NTN TMB205 is a standard small size ball bearing accessory of open type design. This single row radial ball bearing is suitable for general industrial applications requiring a compact, unsealed bearing. The open configuration allows for custom lubrication and high-speed operation.***



## Product details:

- Catalog number: TMB205
- SKU: 270387
- Price: ***$45.39*** Each
- Quantity: This vendor has a minimum order quantity of
2.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 2
(This is the minimum order quantity if ordering this unit alone
from the vendor. Adding other products from the same vendor will reduce
the overall requirement. If adding multiple products from same vendor,
please add all products to cart to see total minimum.)
- 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: 0.280 lb


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


## Product attributes;

  
- B (in): 0.5906
  

  
- 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): 2.0472
  

  
- d (in): 0.9843
  

  
- Dynamic Load Rating: 3150 lbf
  

  
- Dynamic load rating: 3150 lbf
  

  
- Enclosure: Open
  

  
- Factor: 13.9
  

  
- I.D.: 25 mm
  

  
- Limiting Speed - Grease: 13000 RPM
  

  
- Limiting speed - grease: 13000 RPM
  

  
- Limiting Speed - Oil: 15000 RPM
  

  
- Limiting speed - oil: 15000 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 52 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: Class 0
  

  
- r (in): 0.0394
  

  
- r1: 0.0197 in
  

  
- Radial Internal Clearance: CN
  

  
- Radial internal clearance: CN
  

  
- Seal material: None
  

  
- Seal type: None
  

  
- Static Load Rating: 1760 lbf
  

  
- Static load rating: 1760 lbf
  

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

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048825/1148_S_oKE47Yd.png)
- [Drawing](https://documents.mrosupply.com/product_documents/XL/XLS5.1/2/1148_S_71WaKzz.png)






## 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.