# Timken 3MM9105WI TUM Super Precision Angular Contact Ball Bearing, Triplex Medium Preload, ABEC 7 (P4S) - MROSupply.com

***Timken 3MM9105WI TUM super precision angular contact ball bearing, triplex set with medium preload (TUM). ABEC 7 (P4S) precision class for high-rigidity machine tool spindles, jig borers, and precision grinding applications requiring exceptional running accuracy and axial load capacity.***



## Product details:

- Catalog number: 3MM9105WI TUM
- SKU: 5080975
- 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: 0.509 lb
- Returns: Yes


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


## Product attributes;

  
- 0.4724 in C0 - Static Radial Rating (per row): 7100 N
  

  
- 1.180 in Limiting Speed (Grease) (per row): 27800 rpm Limiting speed (oil):55600 rpm Manufacturing part number:3MM9105WI TUM O.D. (in):47 mm 1.8504 Outer ring backing diameter:42.6 mm
  

  
- 1.4172 in World part number: 7005E-T-P4S-TUM
  

  
- 1.680 in Precision rating: ISO P4S (ABEC 7/9) Rows per set:Triplex Total width:36 mm
  

  
- 1590 lbf C1 ISO - Dynamic Radial Rating (per row): 11200 N
  

  
- 2520 lbf Cage type: CR - Phenolic Outer Land Riding Cage Contact angle:25 Design units:Metric Inner ring backing diameter:29.9 mm
  

  
- Ball type: Steel Bearing width:12 mm
  

  
- Ball Type: STEEL
  

  
- Bearing Width: 12 mm 0.4724 in
  

  
- Bore: 25 mm
  

  
- C0 - Static Radial Rating (per row): 7100 N 1590 lbf
  

  
- C1 ISO - Dynamic Radial Rating (per row): 11200 N 2520 lbf
  

  
- Cage Type: CR - Phenolic Outer Land Riding Cage
  

  
- Ce - Dynamic Radial Rating (per row): 12300 N 2770 lbf
  

  
- Contact Angle: 25 º
  

  
- d - Bore: 25 mm
  

  
- D - Outer Diameter: 47 mm 1.8504 in
  

  
- da - Inner Ring Backing Diameter: 29.9 mm 1.180 in
  

  
- Da - Outer Ring Backing Diameter: 42.6 mm 1.680 in
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 42.6 mm 1.680 in
  

  
- Dynamic Radial Rating (per row): 12300 N 2770 lbf
  

  
- I.D.: 25 mm
  

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

  
- Inner Ring Backing Diameter: 29.9 mm 1.180 in
  

  
- Limiting Speed (Grease) (per row): 27800 rpm
  

  
- Limiting Speed (Oil): 55600 rpm
  

  
- Manufacturing Part Number: 3MM9105WI TUM
  

  
- Outer Diameter: 47 mm 1.8504 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: Triplex
  

  
- Static Radial Rating (per row): 7100 N 1590 lbf
  

  
- Total Width: 36 mm 1.4172 in
  

  
- World Part Number: 7005E-T-P4S-TUM
  
## 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.