# 6903-2NSE | Nachi - MROSupply.com

***Nachi Bearing 6903-2NSE Deep Groove Ball Bearing with 2 Seals***



## Product details:

- Catalog number: 6903-2NSE
- SKU: 5744953
- Price: ***$38.72*** Each
- Quantity: This vendor has a minimum order quantity of
3.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 3
(This is the minimum order quantity if ordering this unit alone
from the vendor. Adding other products from the same vendor will reduce
the overall requirement. If adding multiple products from same vendor,
please add all products to cart to see total minimum.)
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Nachi Bearing](https://www.mrosupply.com/brands/nachi-bearing/)
- Category: 
    - [6900 Series Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/6900-series-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.400 lb
- UPC: 4991893858167
- Technicall support: contact supplier for technical support on 800-829-5787


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


## Product attributes;

  
- Bearing Material: Steel
  

  
- Bore Type: Cylindrical
  

  
- Cage Material: JIS SPCC Steel
  

  
- Closure Type: Double Seal
  

  
- Contact Angle (Deg): N/A
  

  
- Dynamic Load Capacity (N): 4600
  

  
- Grease Fill: Chevron SRI#2
  

  
- Inner Diameter (mm): 17
  

  
- Inner Ring Material: JIS SUJ2 Steel
  

  
- Internal Clearance: CN/C0
  

  
- ISO Precision Class: P0
  

  
- Limiting Speed - Grease (RPM): 15000
  

  
- Limiting Speed - Oil (RPM): N/A
  

  
- Max Operating Temp.: 120°C (248°F)
  

  
- Number of Rows: 1
  

  
- Outer Diameter (mm): 30
  

  
- Outer Ring Material: JIS SUJ2 Steel
  

  
- Preload: N/A
  

  
- Rolling Element Material: JIS SUJ2 Steel
  

  
- Seal Material: Buna-N
  

  
- Seals or Shields: 2 Contact Seals
  

  
- Series: 6900
  

  
- Snap Ring: No
  

  
- Static Load Capacity (N): 2550
  

  
- Universally (Flush) Ground: N/A
  

  
- Width (mm): N/A
  

## Alternate products to `6903-2NSE | Nachi - MROSupply.com`:
- [SKF 61903-2RS1 is a 17mm bore deep groove ball bearing, double sealed with NBR rubber contact seals on both sides. It features a sheet metal cage and is made of standard bearing steel. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/326373/as-markdown/)
- [NTN 6903LLU is a single-row deep groove ball bearing with a 17 mm straight bore. It features double contact rubber seals for effective contaminant exclusion. This bearing is pre-greased and suitable for general industrial rotating equipment such as electric motors, pumps, and fans.](https://www.mrosupply.com/products/278177/as-markdown/)
- [NSK 6903DDU deep groove ball bearing with 17 mm bore and 30 mm OD. Double contact rubber seals (DDU) provide effective contaminant exclusion. Pressed steel cage. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034623/as-markdown/)
- [Koyo 6903 2RU is a 69 series single-row deep groove ball bearing with a 17 mm bore, 30 mm OD, and 7 mm width. Double sealed with rubber seals for contaminant protection. Suitable for electric motors, pumps, and general rotating machinery.](https://www.mrosupply.com/products/1495165/as-markdown/)
- [NSK 6903VV deep groove ball bearing with 17 mm bore and 30 mm OD. Double non-contact rubber seals (VV) provide low-friction sealing, and a pressed steel cage ensures reliable operation. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034625/as-markdown/)
- [FAG 61903-2RSR-HLC is a Generation C deep groove ball bearing with a 17mm bore. It features double sealed (2RSR) contact seals for effective lubricant retention and contamination protection. The HLC suffix indicates a high-load-capacity design. This bearing is suitable for applications requiring reliable performance and extended service life.](https://www.mrosupply.com/products/2175351/as-markdown/)

## Product's reviews:
- Good stuff great price - Exactly what I ordered.




## 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.