# Timken QMMH18J307SET Spherical Roller Hanger Bearing, Frame 18, Twin Eccentric Collar Locking - MROSupply.com

***Timken QMMH18J307SET is a spherical roller hanger bearing unit with a QMMH mount code for vertical shaft support. This housed unit features a frame size 18 and uses a twin eccentric collar (SET) locking mechanism for secure shaft attachment. It is designed for heavy-duty applications requiring high radial load capacity and self-alignment.***



## Product details:

- Catalog number: QMMH18J307SET
- SKU: 5987230
- Price: ***$964.37*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Timken](https://www.mrosupply.com/brands/timken/)
- Category: 
    - [Roller Hanger Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/roller-hanger-bearings/)
    - [Mounted Roller Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Returns: Yes


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


## Product attributes;

  
- 0.060 mm Shaft Size: 3 7/16 in Shaft Tolerance:0.0030 in
  

  
- 0.076 mm Shaft size type: Imperial Thread Size J:1 1/4-7UNC Y1 - Geometry Factor:2.90 Y2 - Geometry Factor:4.31 e - Geometry Factor:0.23
  

  
- 0.100 mm Pre Install Clearance Min: 0.0024 in
  

  
- 160.3 mm Dimension R: 0.12 in
  

  
- 3 mm Eng Internal Radial Clearance - Max: 0.0039 Eng Internal Radial Clearance - Min:0.0024 Engineering group:Mounted Bearing Float:0.083 in
  

  
- Bearing number: 22218 C - Dynamic Load (Basic):79700 lbf 355000 N C0 - Static Load:87200 lbf 388000 N Dimension:6.31 in
  

  
- Bearing Number: 22218
  

  
- C - Dynamic Load (Basic): 79700 lbf 355000 N
  

  
- C0 - Static Load: 87200 lbf 388000 N
  

  
- Dimension A: 6.31 in 160.3 mm
  

  
- Dimension B: 10.25 in 260.4 mm
  

  
- Dimension C: 4.76 in 120.9 mm
  

  
- Dimension D: 7.88 in 200.2 mm
  

  
- Dimension E: 2.5 in 63.5 mm
  

  
- Dimension F: 3 in 76.2 mm
  

  
- Dimension G: 3 in 76.2 mm
  

  
- Dimension K: 1.44 in 36.6 mm
  

  
- Dimension L: 3.91 in 99.3 mm
  

  
- Dimension M: 2.59 in 65.8 mm
  

  
- Dimension R: 0.12 in 3 mm
  

  
- Dimension S: 4.03 in 102.4 mm
  

  
- Dynamic Load (Basic): 79700 lbf
  

  
- e - Geometry Factor: 0.23
  

  
- Eng Internal Radial Clearance - Max: 0.0039
  

  
- Eng Internal Radial Clearance - Min: 0.0024
  

  
- Eng Internal Radial ClearancMax: 0.0039
  

  
- Eng Internal Radial ClearancMin: 0.0024
  

  
- Engineering Group: Mounted Bearing
  

  
- Float: 0.083 in 2.108 mm
  

  
- Full Timken Part Number: QMMH18J307SB QMMH18J307SC QMMH18J307SEB QMMH18J307SEC QMMH18J307SEM QMMH18J307SEN QMMH18J307SEO QMMH18J307SET QMMH18J307SM QMMH18J307SN QMMH18J307SO QMMH18J307ST
  

  
- Geometry Factor: 2.9
  

  
- Grease Lubrication - B/C/O Seal: 1000 rpm
  

  
- Grease Lubrication - M/N Seal: 1400 rpm
  

  
- Grease Lubrication - T Seal: 2000 rpm
  

  
- Locking Style: Eccentric
  

  
- Oil Lubrication - B/C/O Seal: 1000 rpm
  

  
- Oil Lubrication - M/N Seal: 1400 rpm
  

  
- Oil Lubrication - T Seal: 2400 rpm
  

  
- Pre Install Clearance Max: 0.0039 in 0.100 mm
  

  
- Pre Install Clearance Min: 0.0024 in 0.060 mm
  

  
- Shaft Size: 3 7/16 in
  

  
- Shaft Size Type: Imperial
  

  
- Shaft Tolerance: 0.0030 in 0.076 mm
  

  
- Static Load: 87200 lbf
  

  
- Thread Size J: 1 1/4-7UNC
  

  
- Y1 - Geometry Factor: 2.90
  

  
- Y2 - Geometry Factor: 4.31
  
## Product documents / software:

- [Eccentric Hanger Block](https://documents.mrosupply.com/product_documents/59/87/5987230/qmmh18j307s_L4Stq2I)

## 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.