# Timken 2MM9111WI QUH Super Precision Angular Contact Ball Bearing, Quadruplex Heavy Preload, ABEC 7 (P4S) - MROSupply.com

***Timken 2MM9111WI QUH is a super precision angular contact ball bearing configured as a quadruplex set with heavy preload (QUH). This ABEC 7 (P4S) precision class bearing is designed for machine tool spindles and high-speed, high-rigidity applications requiring maximum axial and radial stiffness. The quadruplex arrangement provides exceptional load capacity and rotational accuracy for demanding industrial and precision machining equipment.***



## Product details:

- Catalog number: 2MM9111WI QUH
- SKU: 5081340
- 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: 
    - [Single Row Angular Contact Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/single-row-angular-contact-bearings/)
    - [Angular Contact Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 3.377 lb
- Returns: Yes


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


## Product attributes;

  
- 0.7087 in C0 - Static Radial Rating (per row): 28600 N
  

  
- 2.450 in Limiting Speed (Grease) (per row): 14700 RPM Limiting speed (oil):29400 RPM Manufacturing part number:2MM9111WI QUH O.D. (in):90 mm 3.5433 Outer ring backing diameter:83.3 mm
  

  
- 2.8348 in World part number: 7011C-T-P4S-QUH
  

  
- 3.280 in Precision rating: ISO P4S (ABEC 7/9) Rows per set:Quadruplex Total width:72.000 mm
  

  
- 6420 lbf C1 ISO - Dynamic Radial Rating (per row): 34400 N
  

  
- 7730 lbf Cage type: CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:62.2 mm
  

  
- Ball type: Steel Bearing width:18 mm
  

  
- Ball Type: STEEL
  

  
- Bearing Width: 18 mm 0.7087 in
  

  
- Bore: 55 mm
  

  
- C1 ISO - Dynamic Radial Rating (per row): 34400 N 7730 lbf
  

  
- Cage Type: CPhenolic Outer Land Riding Cage
  

  
- Contact Angle: 15 º
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 83.3 mm 3.280 in
  

  
- Dynamic Radial Rating (per row): 37800 N 8500 lbf
  

  
- I.D.: 55 mm
  

  
- Inner Ring 'To Clear' Radius: 1 mm 0.039 in
  

  
- Inner Ring Backing Diameter: 62.2 mm 2.450 in
  

  
- Limiting Speed (Grease) (per row): 14700 rpm
  

  
- Limiting Speed (Oil): 29400 rpm
  

  
- Manufacturing Part Number: 2MM9111WI QUH
  

  
- Outer Diameter: 90 mm 3.5433 in
  

  
- Outer Ring 'To Clear' Radius: 1 mm 0.039 in
  

  
- Precision Rating: ISO P4S (ABEC 7/9)
  

  
- Rows per Set: Quadruplex
  

  
- Static Radial Rating (per row): 28600 N 6420 lbf
  

  
- Total Width: 72.000 mm 2.8348 in
  

  
- World Part Number: 7011C-T-P4S-QUH
  
## Product documents / software:

- [Catalog](https://documents.mrosupply.com/product_documents/50/60/5060627/Machine-Tool-Applications-Catalog_R9rBZA3.pdf)

## 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.


- What is the difference between deep groove and angular contact ball bearings?: Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors.
Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes.
If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.