# Timken 315KDD Deep Groove Ball Bearing, <12 in OD, Radial - MROSupply.com

***Timken 315KDD is a deep groove radial ball bearing from the Fafnir line, designed for general industrial applications. This bearing falls within the less than 12 inch outside diameter class, suitable for electric motors, pumps, and HVAC equipment where reliable radial load support is required. Its deep groove geometry accommodates moderate axial loads in both directions.***



## Product details:

- Catalog number: 315KDD
- SKU: 5061534
- Price: ***$368.20*** Each
- 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: 7.000 lb
- Returns: Yes


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


## Product attributes;

  
- 1.4567 in Design units: Metric Inner ring backing diameter:87.10 mm
  

  
- 3.4291 in Limiting speed (grease): 2553 rpm Limiting speed (oil):2979 rpm Manufacturing part number:315KDDC3 O.D. (in):160 mm 6.299 Outer ring backing diameter:148.10 mm
  

  
- 5.8307 in Static radial rating: 77000 N
  

  
- Ball type: Steel Bearing width:37 mm
  

  
- Ball Type: STEEL
  

  
- Bearing Width: 37 mm 1.4567 in
  

  
- Bore: 75 mm
  

  
- Design Units: Metric
  

  
- DOuter Ring Backing Diameter: 148.10 mm 5.8307 in
  

  
- Dynamic Radial Rating: 125800 N 28300 lbf
  

  
- I.D.: 75 mm
  

  
- Inner Ring 'To Clear' Radius: 2.11 mm 0.083 in
  

  
- Inner Ring Backing Diameter: 87.10 mm 3.4291 in
  

  
- Limiting Speed (Grease): 2553 rpm
  

  
- Limiting Speed (Oil): 2979 rpm
  

  
- Manufacturing Part Number: 315KDDC3
  

  
- Outer Diameter: 160 mm 6.2992 in
  

  
- Outer Ring 'To Clear' Radius: 2.11 mm 0.083 in
  

  
- Static Radial Rating: 77000 N 17300 lbf
  
## Product documents / software:

- [Fafnir Deep Groove Ball Bearings 9100k 200k](https://documents.mrosupply.com/product_documents/50/61/5061534/315kdd_23Eyvlp)

## 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.