# Timken ER28 Fafnir Wide Inner Ring Ball Bearing Insert for Housed Units - MROSupply.com

***Timken ER28 is a Fafnir wide inner ring ball bearing insert designed for housed unit assemblies. This insert features a wide inner ring for enhanced stability and is intended for use in pillow block, flange, and take-up housings. It is suitable for general industrial applications such as conveyors, fans, and light-duty machinery where a standard-duty, relubricatable ball bearing insert is required.***



## Product details:

- Catalog number: ER28
- SKU: 5077326
- Price: ***$73.15*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [Inserts & Cartridges](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/inserts-cartridges/)
    - [Mounted Ball Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 1.754 lb
- Returns: Yes


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


## Product attributes;

  
- 0.024 in Seal type: Narrow Shroud Series:Industrial Set screw size:M8x1.25 Shaft size:1 3/4 in Static load rating:20424 N
  

  
- 0.75 in Dimension: 31.32 mm
  

  
- 0.875 in Dynamic load rating: 36230.4 N
  

  
- 1.094 in Radius: 0.6 mm
  

  
- 1.109 in Dimension Y: 22.25 mm
  

  
- 1.234 in Dimension X: 28.12 mm
  

  
- 1.984 in Lubrication type: Relubricatable Number of set screws:2 O. D. type:Cylindrical OD Outside diameter:85 mm
  

  
- 3.3460 in Outside ring width: 27.72 mm
  

  
- 4600 lbf Sub series: ER
  

  
- 8160 lbf Inner Ring Width B: 50.37 mm
  

  
- Angle between set screws: 90 Basic Outer Ring Size:209 Bearing Type:Ball Bearing Bore type:Cylindrical bore Center of bearing from end:19.05 mm
  

  
- Angle between Set Screws: 90 º
  

  
- Basic Outer Ring Size: 209
  

  
- Bearing Type: Ball Bearing
  

  
- Bore Type: Cylindrical bore
  

  
- Center of Bearing from End S: 19.05 mm 0.75 in
  

  
- Dimension D1: 91.11 mm 3.578 in
  

  
- Dimension F: 57.9 mm 2.234 in
  

  
- Dimension J: 9.14 mm 0.359 in
  

  
- Dimension M: 6.33 mm 0.25 in
  

  
- Dimension S1: 31.32 mm 1.234 in
  

  
- Dimension T: 1.65 mm 0.063 in
  

  
- Dimension X: 28.12 mm 1.109 in
  

  
- Dimension Y: 22.25 mm 0.875 in
  

  
- Dynamic Load Rating: 36230.4 N 8160 lbf
  

  
- Inner Ring Width B: 50.37 mm 1.984 in
  

  
- Lubrication Type: Relubricatable
  

  
- Material: Bearing Steel
  

  
- Number of Set Screws: 2
  

  
- O.D. Type: Cylindrical OD
  

  
- Outside Diameter D: 85 mm 3.346 in
  

  
- Outside Ring Width C: 27.72 mm 1.094 in
  

  
- Radius r: 0.6 mm 0.024 in
  

  
- Seal Type: Narrow Shroud
  

  
- Series: Industrial
  

  
- Set Screw Size: M8x1.25
  

  
- Shaft Size d: 1 3/4 in
  

  
- Static Load Rating: 20424 N 4600 lbf
  

  
- Sub Series: ER
  
## Product documents / software:

- [Fafnir Setscrew Locking Ball Bearings](https://documents.mrosupply.com/product_documents/50/77/5077326/er28_8M1Gc5c)

## Product's reviews:
- Best company to buy from - I always buy from MRO is a very reliable company to work with




## 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.