# NSK 2209ETN Self-Aligning Ball Bearing 45 mm Bore Polyamide Cage - MROSupply.com

***NSK 2209ETN self-aligning ball bearing with 45 mm bore. It features an enhanced polyamide cage (ETN) for reduced friction and quiet operation. This bearing tolerates shaft misalignment and is suitable for conveyor head shafts, fans, and woodworking machinery.***



## Product details:

- Catalog number: 2209ETN
- SKU: 5030251
- Price: ***$126.71*** 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: 1.100 lb
- Returns: Yes


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



## Alternate products to `NSK 2209ETN Self-Aligning Ball Bearing 45 mm Bore Polyamide Cage - MROSupply.com`:
- [FAG 2209TV self-aligning ball bearing with a 45mm bore. This bearing features a polyamide cage and is designed to accommodate misalignment and shaft deflections. Ideal for applications requiring low friction and high-speed capability.](https://www.mrosupply.com/products/2172149/as-markdown/)
- [SKF 2209 ETN9 self-aligning ball bearing, 45mm bore, 85mm OD, 23mm width. Polyamide cage (ETN9) for enhanced performance. Accommodates misalignment from shaft deflection or mounting inaccuracies. Suitable for general industrial applications.](https://www.mrosupply.com/products/318967/as-markdown/)

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




## 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.