# Koyo 6203 2RS Deep Groove Ball Bearing - 17 mm Bore, Double Sealed - MROSupply.com

***Koyo 6203 2RS is a 62 series single-row deep groove ball bearing with a 17 mm bore, 40 mm OD, and 12 mm width. Features double rubber seals and a steel cage. Suitable for electric motors, pumps, and general rotating machinery.***



## Product details:

- Catalog number: 6203 2RS
- SKU: 1494729
- Price: ***$9.40*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Koyo Bearing](https://www.mrosupply.com/brands/koyo-bearing/)
- 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: 0.066 lb
- UPC: 60579005714


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


## Product attributes;

  
- Bore: 0.669 in / 17 mm
  

  
- Brand: KOYO
  

  
- Enclosure Type: Contact Seal
  

  
- Harmonized Tariff Code: 8482.10.50.68
  

  
- Inch - Metric: Metric
  

  
- Inner Race Width: 0 Inch / 0 Millimeter
  

  
- Internal Clearance: C0-Medium
  

  
- Internal Special Features: No
  

  
- Maximum Capacity / Filling Slot: No
  

  
- Other Features: Deep Groove
  

  
- Outer Race Width: 0.472 Inch / 12 Millimeter
  

  
- Outside Diameter: 1.575 Inch / 40 Millimeter
  

  
- Precision Class: ABEC 1 / ISO P0
  

  
- Rolling Element: Ball Bearing
  

  
- Snap Ring: No
  

  
- Type: Single Row Ball Bearings
  

  
- UNSPSC: 31171504
  

## Alternate products to `Koyo 6203 2RS Deep Groove Ball Bearing - 17 mm Bore, Double Sealed - MROSupply.com`:
- [Timken 6203-2RS is a deep groove radial ball bearing with a 17mm bore, part of the 6200 series. It features contact rubber seals (2RS) on both sides for protection against contamination and moisture retention. This bearing has a normal (C0) radial internal clearance, a dynamic load rating of 9.6 kN, and a static load rating of 4.8 kN. It is suitable for general industrial applications such as electric motors, pumps, and conveyors.](https://www.mrosupply.com/products/5082539/as-markdown/)
- [SKF 6203 2RSJEM is a 17mm bore deep groove ball bearing, double sealed with NBR contact seals on both sides. It features C3 greater-than-normal clearance and a machined brass cage for durability. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/320001/as-markdown/)
- [NSK 6203DDU sealed deep groove ball bearing with 17 mm bore. Double contact rubber seals (DDU) on both sides retain lubricant and exclude contaminants. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5033647/as-markdown/)
- [SKF 6203-2RSH deep groove ball bearing, 17mm bore, 1.575 in OD, double sealed with low-friction NBR rubber seals on both sides. Features a sheet metal cage and normal internal clearance. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/319867/as-markdown/)
- [Nachi Bearing 6203-2NKE9C3 6203 2NKE9 C3 BXMM](https://www.mrosupply.com/products/5900085/as-markdown/)
- [NSK 6203DDUC3 deep groove ball bearing with 17 mm bore. Double contact rubber seals (DDU) provide effective contamination protection. C3 internal clearance accommodates thermal expansion. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5033649/as-markdown/)
- [Rollway 6203 2RS EMQ BALL 16000-61800-62200-62300](https://www.mrosupply.com/products/2889667/as-markdown/)
- [SKF 6203-2RSH/W64F 17mm bore deep groove ball bearing, double sealed with low-friction NBR seals and filled with Solid Oil for maintenance-free operation. Machined steel cage, normal clearance. Suitable for food processing and washdown applications.](https://www.mrosupply.com/products/5948270/as-markdown/)

## Product's reviews:
- Great service - great items at great price
- Koyo roller bearing inner ring - Good product.
- Admin assistance - good product!




## 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.