# Timken 3MMC215WI QUH Super Precision Angular Contact Ball Bearing, Quadruplex Heavy Preload, ABEC 7/9 P4S - MROSupply.com

***Timken 3MMC215WI QUH super precision angular contact ball bearing, quadruplex set with heavy preload (QUH). P4S-grade ABEC 7/9 precision for machine tool spindles and high-rigidity applications. Designed for maximum stiffness and accuracy in precision grinding, milling, and boring spindles.***



## Product details:

- Catalog number: 3MMC215WI QUH
- SKU: 5115361
- 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: 10.353 lb
- Returns: Yes


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


## Product attributes;

  
- 0.9843 in C0 - Static Radial Rating (per row): 55600 N
  

  
- 12500 lbf C1 ISO - Dynamic Radial Rating (per row): 76100 N
  

  
- 17100 lbf Cage type: CR - Phenolic Outer Land Riding Cage Contact angle:25 Design units:Metric Inner ring backing diameter:85.2 mm
  

  
- 3.360 in Limiting Speed (Grease) (per row): 11600 RPM Limiting speed (oil):23200 RPM Manufacturing part number:3MMC215WI QUH O.D. (in):130 mm 5.1181 Outer ring backing diameter:120.8 mm
  

  
- 3.9372 in World part number: C7215E-T-P4S-QUH
  

  
- 4.760 in Precision rating: ISO P4S (ABEC 7/9) Rows per set:Quadruplex Total width:100 mm
  

  
- Ball type: Ceramic Bearing width:25 mm
  

  
- Ball Type: Ceramic
  

  
- Bearing Width: 25 mm 0.9843 in
  

  
- Bore: 75 mm
  

  
- C1 ISO - Dynamic Radial Rating (per row): 76100 N 17100 lbf
  

  
- Cage Type: CPhenolic Outer Land Riding Cage
  

  
- Contact Angle: 25 º
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 120.8 mm 4.760 in
  

  
- Dynamic Radial Rating (per row): 83700 N 18800 lbf
  

  
- I.D.: 75 mm
  

  
- Inner Ring 'To Clear' Radius: 1.5 mm 0.059 in
  

  
- Inner Ring Backing Diameter: 85.2 mm 3.360 in
  

  
- Limiting Speed (Grease) (per row): 11600 rpm
  

  
- Limiting Speed (Oil): 23200 rpm
  

  
- Manufacturing Part Number: 3MMC215WI QUH
  

  
- Outer Diameter: 130 mm 5.1181 in
  

  
- Outer Ring 'To Clear' Radius: 1.5 mm 0.059 in
  

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

  
- Rows per Set: Quadruplex
  

  
- Static Radial Rating (per row): 55600 N 12500 lbf
  

  
- Total Width: 100 mm 3.9372 in
  

  
- World Part Number: C7215E-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.