# Timken 2MM9130WI QUM Super Precision Angular Contact Ball Bearing, Quadruplex Medium Preload, ABEC 7 (P4S) - MROSupply.com

***Timken 2MM9130WI QUM super precision angular contact ball bearing, quadruplex set with medium preload (QUM). ABEC 7 (P4S) precision class for high-rigidity machine tool spindles and high-speed applications requiring extreme rotational accuracy and minimal runout. Quadruplex arrangement provides maximum axial and radial load capacity in a compact assembly.***



## Product details:

- Catalog number: 2MM9130WI QUM
- SKU: 5081152
- 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: 37.038 lb
- Returns: Yes


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


## Product attributes;

  
- 1.378 in C0 - Static Radial Rating (per row): 168100 N
  

  
- 34200 lbf Cage type: CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:165.2 mm
  

  
- 37800 lbf C1 ISO - Dynamic Radial Rating (per row): 152000 N
  

  
- 5.512 in World part number: 7030C-T-P4S-QUM
  

  
- 6.510 in Limiting Speed (Grease) (per row): 5600 rpm Limiting speed (oil):11200 rpm Manufacturing part number:2MM9130WI QUM O.D. (in):225 mm 8.8583 Outer ring backing diameter:210.7 mm
  

  
- 8.300 in Precision rating: ISO P4S (ABEC 7/9) Rows per set:Quadruplex Total width:140 mm
  

  
- Ball type: Steel Bearing width:35 mm
  

  
- Ball Type: STEEL
  

  
- Bearing Width: 35 mm 1.3780 in
  

  
- Bore: 150 mm
  

  
- C0 - Static Radial Rating (per row): 168100 N 37800 lbf
  

  
- C1 ISO - Dynamic Radial Rating (per row): 152000 N 34200 lbf
  

  
- Cage Type: CR - Phenolic Outer Land Riding Cage
  

  
- Ce - Dynamic Radial Rating (per row): 167200 N 37600 lbf
  

  
- Contact Angle: 15 º
  

  
- d - Bore: 150 mm
  

  
- D - Outer Diameter: 225 mm 8.8583 in
  

  
- da - Inner Ring Backing Diameter: 165.2 mm 6.510 in
  

  
- Da - Outer Ring Backing Diameter: 210.7 mm 8.3000 in
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 210.7 mm 8.3000 in
  

  
- Dynamic Radial Rating (per row): 167200 N 37600 lbf
  

  
- I.D.: 150 mm
  

  
- Inner Ring 'To Clear' Radius: 2 mm 0.079 in
  

  
- Inner Ring Backing Diameter: 165.2 mm 6.510 in
  

  
- Limiting Speed (Grease) (per row): 5600 rpm
  

  
- Limiting Speed (Oil): 11200 rpm
  

  
- Manufacturing Part Number: 2MM9130WI QUM
  

  
- Outer Diameter: 225 mm 8.8583 in
  

  
- Outer Ring 'To Clear' Radius: 2 mm 0.079 in
  

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

  
- R - Inner Ring "To Clear" Radius: 2 mm 0.079 in
  

  
- r - Outer Ring "To Clear" Radius: 2 mm 0.079 in
  

  
- Rows per Set: Quadruplex
  

  
- Static Radial Rating (per row): 168100 N 37800 lbf
  

  
- Total Width: 140.000 mm 5.512 in
  

  
- World Part Number: 7030C-T-P4S-QUM
  
## 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.