# Timken 2MM203WI QUL Super Precision Angular Contact Ball Bearing, Quadruplex Light Preload, ABEC 7 (P4S) - MROSupply.com

***Timken 2MM203WI QUL is a super precision angular contact ball bearing configured as a quadruplex set with light preload (QUL). This ABEC 7 (P4S) precision class bearing is designed for high-rigidity machine tool spindles and high-speed applications requiring extreme rotational accuracy and minimal runout. The quadruplex arrangement provides maximum axial and radial load capacity in a compact, pre-matched assembly.***



## Product details:

- Catalog number: 2MM203WI QUL
- SKU: 5060835
- 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: 0.564 lb
- Returns: Yes


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


## Product attributes;

  
- 0.4724 in C0 - Static Radial Rating (per row): 5900 N
  

  
- 0.850 in Limiting Speed (Grease) (per row): 41900 RPM Limiting speed (oil):83800 RPM Manufacturing part number:2MM203WI QUL O.D. (in):40 mm 1.5748 Outer ring backing diameter:35.7 mm
  

  
- 1.410 in Precision rating: ISO P4S (ABEC 7/9) Rows per set:Quadruplex Total width:48 mm
  

  
- 1.8896 in World part number: 7203C-T-P4S-QUL
  

  
- 1320 lbf C1 ISO - Dynamic Radial Rating (per row): 10900 N
  

  
- 2460 lbf Cage type: CR - Phenolic Outer Land Riding Cage Contact angle:15 Design units:Metric Inner ring backing diameter:21.5 mm
  

  
- Ball type: Steel Bearing width:12 mm
  

  
- Ball Type: STEEL
  

  
- Bearing Width: 12 mm 0.4724 in
  

  
- Bore: 17 mm
  

  
- C0 - Static Radial Rating (per row): 5900 N 1320 lbf
  

  
- C1 ISO - Dynamic Radial Rating (per row): 10900 N 2460 lbf
  

  
- Cage Type: CR - Phenolic Outer Land Riding Cage
  

  
- Ce - Dynamic Radial Rating (per row): 12000 N 2750 lbf
  

  
- Contact Angle: 15 º
  

  
- d - Bore: 17 mm
  

  
- D - Outer Diameter: 40 mm 1.5748 in
  

  
- da - Inner Ring Backing Diameter: 21.5 mm 0.850 in
  

  
- Da - Outer Ring Backing Diameter: 35.7 mm 1.410 in
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 35.7 mm 1.410 in
  

  
- Dynamic Radial Rating (per row): 12000 N 2750 lbf
  

  
- I.D.: 17 mm
  

  
- Inner Ring 'To Clear' Radius: 0.6 mm 0.024 in
  

  
- Inner Ring Backing Diameter: 21.5 mm 0.850 in
  

  
- Limiting Speed (Grease) (per row): 41900 rpm
  

  
- Limiting Speed (Oil): 83800 rpm
  

  
- Manufacturing Part Number: 2MM203WI QUL
  

  
- Outer Diameter: 40 mm 1.5748 in
  

  
- Outer Ring 'To Clear' Radius: 0.6 mm 0.024 in
  

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

  
- R - Inner Ring "To Clear" Radius: 0.6 mm 0.024 in
  

  
- r - Outer Ring "To Clear" Radius: 0.6 mm 0.024 in
  

  
- Rows per Set: Quadruplex
  

  
- Static Radial Rating (per row): 5900 N 1320 lbf
  

  
- Total Width: 48 mm 1.8896 in
  

  
- World Part Number: 7203C-T-P4S-QUL
  
## 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.