# Timken 3MM9115WI SUH Super Precision Angular Contact Ball Bearing, 75mm Bore, 15° Contact, Set of Two Unmatched Heavy Preload, ABEC 7 (P4S) - MROSupply.com

***Timken 3MM9115WI SUH super precision angular contact ball bearing set of two unmatched bearings with heavy preload (SUH). 75mm bore, 15° contact angle, ABEC 7 (P4S) precision grade for high rigidity and accuracy in machine tool spindles, grinders, and high-speed applications. Designed for heavy preload configurations requiring maximum stiffness and minimal runout.***



## Product details:

- Catalog number: 3MM9115WI SUH
- SKU: 5081528
- 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: 1.407 lb
- Returns: Yes


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


## Product attributes;

  
- 0.7874 in C0 - Static Radial Rating (per row): 41200 N
  

  
- 0.7874 in World part number: 7015E-T-P4S-SUH
  

  
- 10000 lbf Cage type: CR - Phenolic Outer Land Riding Cage Contact angle:25 Design units:Metric Inner ring backing diameter:82.7 mm
  

  
- 3.260 in Limiting Speed (Grease) (per row): 9900 RPM Limiting speed (oil):19800 RPM Manufacturing part number:3MM9115WI SUH O.D. (in):115 mm 4.5276 Outer ring backing diameter:107.3 mm
  

  
- 4.230 in Precision rating: ISO P4S (ABEC 7/9) Rows per set:Single Total width:20 mm
  

  
- 9260 lbf C1 ISO - Dynamic Radial Rating (per row): 44400 N
  

  
- Ball type: Steel Bearing width:20 mm
  

  
- Ball Type: STEEL
  

  
- Bearing Width: 20 mm 0.7874 in
  

  
- Bore: 75 mm
  

  
- C0 - Static Radial Rating (per row): 41200 N 9260 lbf
  

  
- C1 ISO - Dynamic Radial Rating (per row): 44400 N 10000 lbf
  

  
- Cage Type: CR - Phenolic Outer Land Riding Cage
  

  
- Ce - Dynamic Radial Rating (per row): 48900 N 11000 lbf
  

  
- Contact Angle: 25 º
  

  
- d - Bore: 75 mm
  

  
- D - Outer Diameter: 115 mm 4.5276 in
  

  
- da - Inner Ring Backing Diameter: 82.7 mm 3.260 in
  

  
- Da - Outer Ring Backing Diameter: 107.3 mm 4.230 in
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 107.3 mm 4.230 in
  

  
- Dynamic Radial Rating (per row): 48900 N 11000 lbf
  

  
- I.D.: 75 mm
  

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

  
- Inner Ring Backing Diameter: 82.7 mm 3.260 in
  

  
- Limiting Speed (Grease) (per row): 9900 rpm
  

  
- Limiting Speed (Oil): 19800 rpm
  

  
- Manufacturing Part Number: 3MM9115WI SUH
  

  
- Outer Diameter: 115 mm 4.5276 in
  

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

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

  
- R - Inner Ring "To Clear" Radius: 1 mm 0.039 in
  

  
- r - Outer Ring "To Clear" Radius: 1 mm 0.039 in
  

  
- Rows per Set: Single
  

  
- Static Radial Rating (per row): 41200 N 9260 lbf
  

  
- Total Width: 20 mm 0.7874 in
  

  
- World Part Number: 7015E-T-P4S-SUH
  
## 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.