# SealMaster ER-8C Mounted Bearing Insert 1/2" Bore Single Set Screw Lock - MROSupply.com

***SealMaster ER-8C is a 1/2" bore mounted bearing insert with a single set screw lock. The insert features a 52100 bearing steel race and a felt labyrinth seal. It is designed for use in SealMaster pillow block and flange housings.***



## Product details:

- Catalog number: 703904
- SKU: 2258047
- Price: ***$55.09*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [SealMaster](https://www.mrosupply.com/brands/sealmaster/)
- Category: 
    - [Inserts & Cartridges](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/inserts-cartridges/)
    - [Mounted Ball Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.550 lb
- UPC: 662461024683
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Ability to Relubricate: Yes
  

  
- Bearing Insert Coating: Black Oxide Coated
  

  
- Bore Shape: Straight
  

  
- Cage Material: Brass
  

  
- Centerline to Front Face (in): 0.813
  

  
- Duty: Standard
  

  
- End Cap: No
  

  
- Expansion: No
  

  
- Height: 2.38
  

  
- Housing: Insert (ER Style)
  

  
- I.D.: 0.5
  

  
- Inner Race Heat Treat Method: Zone-Hardened
  

  
- Inner Race Length (in): 1.219
  

  
- Inner Race Profile: Wide Inner Ring
  

  
- Inner Ring OD (in): 1.188
  

  
- Insert Material: 52100 Bearing Steel, Black Oxided
  

  
- Internal Clearance: Standard
  

  
- Length: 2.38
  

  
- Locking: Set Screw
  

  
- Lubrication Type: Lithium Complex NLGI 2 Grease
  

  
- Max Operating Temperature (F): 220
  

  
- Maximum Speed (RPM): 6450
  

  
- Measure Unit: Inch
  

  
- Misalignment Capability: None
  

  
- Misalignment Type: Static Only
  

  
- Outer Race OD (in): 1.85
  

  
- Outer Race Profile: Cylindrical
  

  
- Outer Race Width (in): 0.625
  

  
- Outer Ring Land Profile: Tapered Lands
  

  
- Overall Width (in): 1.219
  

  
- Platform: Gold Line Ball Bearing
  

  
- Precision Rating: ABEC 1
  

  
- Radial Dynamic Load Capacity (lb): 2611
  

  
- Radial Static Load Capacity (lb): 1444
  

  
- Radius: 0.04
  

  
- Retainer Type: Land Riding Retainer
  

  
- Rolling element: Ball Bearing
  

  
- Seal: Single Lip Contact Seal
  

  
- Width: 1.44
  
## Product documents / software:

- [Catalog Page](https://documents.mrosupply.com/product_documents/ER/ER-204/MCC12004E_Sec_G-107.pdf)
- [Drawing](https://documents.mrosupply.com/product_documents/ER/ER-204/ER.GIF)

## Product's reviews:
- Drum bearing - Very easy to order, arrived very quickly, We will be ordering more items from here in the future.
- Owner - Your shipment was quick and you have a great price on
Sealmaster bearings. Your Gates and Browning Power Belts were higher than I expected. Great Service Great Price. We have to get right or get left in this market in this market.
- Bearing - It was delivered on time
- Solutions - Fast service, and excellent competitive price.




## 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.