# Timken UCF218-56 UC-Series Four-Bolt Flange Mounted Ball Bearing Unit, 3-1/2 in Bore, Setscrew Locking - MROSupply.com

***Timken UCF218-56 UC-series four-bolt flange mounted ball bearing unit with 3-1/2 in bore, setscrew locking insert bearing UC218-56, and cast iron housing. Dynamic load rating 21,604 lbf, static load rating 16,074 lbf. Bolt hole spacing 7.359 in, M20 bolt size, 0.906 in bolt holes. Suitable for conveyors, fans, and agricultural equipment.***



## Product details:

- Catalog number: UCF218-56
- SKU: 5100964
- Call for Pricing - 888-671-2883
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [4-Bolt Flange](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/flanged-mounted-bearings/4-bolt-flange/)
    - [Flanged Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/flanged-mounted-bearings/)
    - [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: 25.100 lb
- Returns: Yes


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


## Product attributes;

  
- 0.906 in Bolt hole spacing: 187 mm
  

  
- 0.984 in Grease nipple size: A-R1/8 Housing construction:Four-Bolt Square Flange Housing width:68 mm
  

  
- 1.563 in Center of bearing from housing end: 40 mm
  

  
- 1.575 in Dimension A0: 96.3 mm
  

  
- 16074 lbf Total length: 235 mm
  

  
- 2.677 in Inner Ring Width B: 96 mm
  

  
- 21604 lbf Flange thickness: 25 mm
  

  
- 3.780 in Inside ring width: 3.780 in Locking style:Set Screw Locking Shaft size:3 1/2 in Static load rating:71500 N
  

  
- 3.781 in Dynamic load rating: 96100 N
  

  
- 7.362 in Bolt size: M20 Center of bearing from bearing end:39.7 mm
  

  
- 9.252 in Total width: 3.781 in
  

  
- Bearing number: UC218-56
  

  
- Bolt hole size: 0.906 in
  

  
- Bolt hole spacing: 7.359 in
  

  
- Bolt Size: M20
  

  
- Bore: 3 1/2 in
  

  
- Center of bearing from bearing end: 1.563 in
  

  
- Center of bearing from housing end: 1.563 in
  

  
- Dynamic load rating: 21604 lbf
  

  
- Flange thickness: 0.969 in
  

  
- Grease nipple size: M6
  

  
- Inside ring width: 3.780 in
  

  
- Static load rating: 16074 lbf
  

  
- Total length: 9.250 in
  

  
- Total width: 3.781 in
  
## Product documents / software:

- [Ucf Four Bolt Flange Units](https://documents.mrosupply.com/product_documents/51/00/5100964/ucf218-56_SeDxaJL)
## Alternate products to `Timken UCF218-56 UC-Series Four-Bolt Flange Mounted Ball Bearing Unit, 3-1/2 in Bore, Setscrew Locking - MROSupply.com`:
- [AMI UCF218-56 four-bolt flange bearing unit with 3-1/2" bore, set-screw locking, and cast iron housing. Chrome steel insert, wide inner ring, normal duty rating. 200 series mounted bearing for industrial applications.](https://www.mrosupply.com/products/1959/as-markdown/)
- [FYH UCF218 56 4-bolt flange mounted ball bearing unit with a 3-1/2" bore and set screw locking. The cast iron housing provides rigid support for the bearing insert. Manufactured to JIS standards for reliable industrial performance.](https://www.mrosupply.com/products/1863933/as-markdown/)
- [PTI UCF218-56 4-bolt square flange bearing, Silver Series, normal duty, 3-1/2" bore, set screw locking. Cast iron housing, non-expansion unit for industrial power transmission applications.](https://www.mrosupply.com/products/2206363/as-markdown/)
- [Peer UCF218-56](https://www.mrosupply.com/products/606481/as-markdown/)

## 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.