# McGill MI 48 Needle Roller Inner Race - Size 48, 3" Bore, For CAGEROL and GUIDEROL Bearings - MROSupply.com

***McGill MI 48 precision-ground inner race for CAGEROL (MR series) and GUIDEROL (GR series) needle roller outer assemblies. Size 48 with 3-inch bore. Built from 52100 bearing steel, it provides a hardened ground running surface when the shaft cannot serve as the inner race.***



## Product details:

- Catalog number: MI 48
- SKU: 2251050
- Price: ***$56.17*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [McGill Bearing](https://www.mrosupply.com/brands/mcgill-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: 1.390 lb
- UPC: 726166000769
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Bore Type: Straight
  

  
- Component Type: Inner ring only
  

  
- Enclosure: Open
  

  
- Height: 3.62
  

  
- Hole Diameter (in): 0.25
  

  
- Includes Inner Ring: Yes
  

  
- Length: 3.62
  

  
- Material: 52100 Bearing Steel
  

  
- Outer Width (in): 2.01
  

  
- Overall Width (in): 2.01
  

  
- Radial Clearance: Normal
  

  
- Rolling Element: Needle Roller
  

  
- Sealed: None
  

  
- Series: Standard
  
## Product documents / software:

- [Catalog Page](https://documents.mrosupply.com/product_documents/22/51/2251047/multi-brands2F260.pdf)
- [Catalog Page](https://documents.mrosupply.com/product_documents/MI/MI%2042/MCC11012E_Sec_C-31.pdf)
- [Drawing](https://documents.mrosupply.com/product_documents/MI/MI%2096/MI.gif)
- [3D Drawing IGES](https://documents.mrosupply.com/product_documents/MI/MI%2048/regalpts_beloit_EMERSON-MI-48-DEFAULT_vuwEsKH.IGS)
## Alternate products to `McGill MI 48 Needle Roller Inner Race - Size 48, 3" Bore, For CAGEROL and GUIDEROL Bearings - MROSupply.com`:
- [Koyo IR-485632 solid race inner ring for needle roller bearings with a 76.200 mm bore, 3.5 inch outer diameter, and 2 inch width. Features an oil hole for lubrication. Precision-ground raceway for use with drawn cup or machined ring needle roller bearings.](https://www.mrosupply.com/products/1496694/as-markdown/)
- [Smith Bearing IRR-3 Inner Race with 3" outside diameter and 1/4" bore. Precision ground with tight tolerances: OD +0.0000/-0.0009, ID +0.0000/-0.0006, width +.000/-.005. Designed for use with cam followers and track rollers.](https://www.mrosupply.com/products/2789732/as-markdown/)
- [IKO Bearing LRB485632 Inner Ring, Inch, 3" Inside Diameter, 3 1/2" Outside Diameter, 51.050 mm Width, General Usage, High Carbon Steel, With Oil Hole , To Assemble with BR567232](https://www.mrosupply.com/products/862243/as-markdown/)

## Product's reviews:
- Great! - Got the bearing i needed at a fraction of the price with free shipping and quick delivery. I will definitely order the rest of my bearings from MRO
- As ordered - correct item right price
- Excellent service - EXCELLENT SERVICE
ORDER WENT THROUGH FLAWLESSLY
- Mcgill bearings - Excellent product, price and service. I will be a repeat customer!




## 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.