# SealMaster MP-311 710223 2-Bolt Pillow Block Bearing 55 mm Bore Set Screw Lock Gold Line - MROSupply.com

***SealMaster MP-311 710223 55 mm bore 2-bolt pillow block bearing unit, Gold Line. Cast iron housing with 52100 bearing steel insert, black oxide coating, set screw locking, and felt-labyrinth seal. Pre-lubricated for general industrial applications.***



## Product details:

- Catalog number: 710223
- SKU: 2259817
- Price: ***$522.15*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [SealMaster](https://www.mrosupply.com/brands/sealmaster/)
- Category: 
    - [2-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/pillow-block-bearings/2-bolt-pillow-block-bearings/)
    - [Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/pillow-block-bearings/)
    - [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: 16.200 lb
- UPC: 662461054000
- 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
  

  
- Base Length (in): 10.25
  

  
- Base to Center Height (in): 2.75
  

  
- Base Width (in): 3.13
  

  
- Bearing Insert Finish: Black Oxide
  

  
- Bearing Insert Material: 52100 Bearing Steel
  

  
- Bearing Type: Medium Duty
  

  
- Bolt Size (in): 3/4
  

  
- Bolt Spacing Max (in): 7.94
  

  
- Bolt Spacing Min (in): 6.56
  

  
- Bore Diameter (mm): 55
  

  
- Bore Shape: Straight
  

  
- Cage Material: PPS - Polyphenylene Sulfide
  

  
- Cage Type: Land Riding Retainer
  

  
- Centerline to Outermost Bearing Face (in): 1.563
  

  
- Dynamic Load Rating (lb): 11789
  

  
- End Cap: No
  

  
- Fixed vs. Expansion: Fixed
  

  
- Foot Height (in): 1.06
  

  
- Grease Fitting Thread Size: 1/8 NPT
  

  
- Height: 3.19
  

  
- Housing: Pillow Block, Two Bolt
  

  
- Housing Base: Solid
  

  
- Housing Coating: Powder Coated
  

  
- Housing Color: Black
  

  
- Housing Construction: One Piece
  

  
- Housing Material: Cast Iron
  

  
- Housing Style: Pillow Block
  

  
- Inner Race Heat Treat Method: Zone-Hardened
  

  
- Inner Ring OD (in): 2.984
  

  
- Insert: 5311
  

  
- Length: 11.13
  

  
- Length Through Bore (in): 2.563
  

  
- Lubricant: Lithium Complex NLGI 2 Grease
  

  
- Max Operating Temperature (F): 220
  

  
- Maximum Speed (RPM): 3000
  

  
- Misalignment Capability: ±2.0° Misalignment - Static Only
  

  
- Misalignment Type: Static Only
  

  
- Outer Ring Land Profile: Standard
  

  
- Overall Height (in): 5.63
  

  
- Overall Length (in): 10.25
  

  
- Overall Width (in): 3.13
  

  
- Radial Clearance: Standard
  

  
- Rolling element: Ball Bearing
  

  
- Seal: Felt Labyrinth Seal
  

  
- Setscrew Torque (in-lbs): 230-300
  

  
- Shaft Locking Type: Set Screw
  

  
- Size Code: 2-27
  

  
- Static Load Rating (lb): 8150
  

  
- Vibration Frequency Fundamental Train: 0.007
  

  
- Vibration Frequency Inner Ring Defect: 0.099
  

  
- Vibration Frequency Outer Ring Defect: 0.068
  

  
- Vibration Frequency Roller Spin: 0.043
  

  
- Width: 6.31
  
## Product documents / software:

- [Catalog Page](https://documents.mrosupply.com/product_documents/MP/MP-32/MCC12004E_G39.pdf)
- [Drawing](https://documents.mrosupply.com/product_documents/MP/MP-32/MP.GIF)
- [3D Drawing IGES](https://documents.mrosupply.com/product_documents/MP/MP-311/regalpts_beloit_PTS-MP-311-DEFAULT_PSVraxB.IGS)
## Alternate products to `SealMaster MP-311 710223 2-Bolt Pillow Block Bearing 55 mm Bore Set Screw Lock Gold Line - MROSupply.com`:
- [AMI UCPX11 medium duty set-screw pillow block bearing with 11/16" (17.463mm) bore and cast iron housing. Chrome steel insert with wide inner ring for enhanced load capacity and durability in industrial applications.](https://www.mrosupply.com/products/6617/as-markdown/)

## Product's reviews:
- Excelent - excelent
- 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.
- Solutions - Fast service, and excellent competitive price.
- Drum bearing - Very easy to order, arrived very quickly, We will be ordering more items from here in the future.




## 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.