# Koyo IR-283628 Inner Race for Needle Roller Bearing - 44.450 mm Bore, Solid Race with Oil Hole - MROSupply.com

***Koyo IR-283628 is a solid race inner ring for needle roller bearings with a 44.450 mm bore and an oil hole. This inner race provides a hardened and ground raceway surface for needle roller assemblies in industrial gearboxes, pumps, and machinery.***



## Product details:

- Catalog number: IR-283628
- SKU: 1496675
- Price: ***$31.04*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Koyo Bearing](https://www.mrosupply.com/brands/koyo-bearing/)
- Category: 
    - [Inner Race](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/inner-race/)
    - [Needle Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.764 lb
- UPC: 60579021678


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


## Product attributes;

  
- Bearing Design: Removable Inner Ring Straight
  

  
- I.D.: 1 3/4 in
  

  
- O.D.: 2 1/4 in
  

  
- Oil Hole: w/Oil Hole
  

  
- Precision Ground: Yes
  

  
- Width: 1 3/4 in
  

## Alternate products to `Koyo IR-283628 Inner Race for Needle Roller Bearing - 44.450 mm Bore, Solid Race with Oil Hole - MROSupply.com`:
- [McGill MI 28 precision-ground inner race for CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. 1.75 in bore, 52100 bearing steel, unsealed. Allows the assembly to run on a hardened ground shaft when one is unavailable.](https://www.mrosupply.com/products/2251032/as-markdown/)
- [Smith Bearing IRR-1-3/4 inner race with 1.7500" bore, 2.2489" outside diameter, and 1.760" overall width. Bore tolerance +0.0000/-0.0005, OD tolerance +0.0000/-0.0007. Max shaft fillet 0.060". Precision ground for use with cam followers and track rollers.](https://www.mrosupply.com/products/859103/as-markdown/)
- [IKO Bearing LRB283628 Inner Ring, Inch, 1 3/4" Inside Diameter, 2 1/4" Outside Diameter, 44.700 mm Width, General Usage, High Carbon Steel, With Oil Hole , To Assemble with BR364828](https://www.mrosupply.com/products/861440/as-markdown/)

## Product's reviews:
- Admin assistance - good product!
- Great service - great items at great price
- Koyo roller bearing inner ring - Good product.




## 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.