# NSK 1308TN Self-Aligning Ball Bearing - 40 mm Bore, Polyamide Cage - MROSupply.com

***NSK 1308TN self-aligning ball bearing with 40 mm bore and 90 mm outside diameter. Polyamide cage (TN) enables quiet operation and moderate speed capability. Tolerates shaft misalignment in conveyor head shafts, fans, and woodworking machinery. Backed by NSK's precision-bearing engineering heritage.***



## Product details:

- Catalog number: 1308TN
- SKU: 5030011
- Price: ***$134.12*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NSK Bearings](https://www.mrosupply.com/brands/nsk-bearings/)
- Category: 
    - [Self-Aligning Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/self-aligning-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 1.507 lb
- Returns: Yes


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



## Alternate products to `NSK 1308TN Self-Aligning Ball Bearing - 40 mm Bore, Polyamide Cage - MROSupply.com`:
- [SKF 1308 ETN9 is a 40mm bore self-aligning ball bearing with an enhanced polyamide cage. This bearing accommodates misalignment and is suitable for applications with shaft deflection or mounting inaccuracies.](https://www.mrosupply.com/products/318984/as-markdown/)
- [FAG 1308-TVH self-aligning ball bearing with a 45mm bore and 100mm OD. Features a polyamide cage for reduced friction and quiet operation. Suitable for applications with shaft misalignment. Precision German engineering from Schaeffler.](https://www.mrosupply.com/products/2178196/as-markdown/)

## Product's reviews:
- Sales - Great Service !!
- Purchasing specialist - Great!!!
- Had what i needed - Found the bearing I needed. Reasonable price. Great phone support.




## 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.