# SealMaster RPB 307-4 Mounted Tapered Roller Pillow Block Bearing 3-7/16" Bore Adapter Sleeve Double Collar Mount - MROSupply.com

***SealMaster RPB 307-4 mounted tapered roller pillow block bearing, 3-7/16" bore, adapter sleeve mounting with double collar lock. Cast iron semi-solid housing, felt seal, Type E interchangeable. Designed for heavy industrial applications requiring combined radial and axial load capacity.***



## Product details:

- Catalog number: RPB 307-4
- SKU: 2255623
- Price: ***$1,533.35*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [SealMaster](https://www.mrosupply.com/brands/sealmaster/)
- Category: 
    - [4-Bolt Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/4-bolt-pillow-block-bearings/)
    - [Pillow Block Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/pillow-block-bearings/)
    - [Mounted Roller Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-roller-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 59.600 lb
- UPC: 662288481560
- 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 to Center Height (in): 3.75
  

  
- Base Width (in): 4.5
  

  
- Bearing Insert Coating: Uncoated
  

  
- Bolt Center Max (in): 11.5
  

  
- Bolt Center Min (in): 10.563
  

  
- Bolt Size (in): 0.75
  

  
- Bore Shape: Straight
  

  
- Centerline to Front Face (in): 2.5
  

  
- Collar OD (in): 5.438
  

  
- Duty: Standard
  

  
- End Cap: No
  

  
- Expansion: No
  

  
- Foot Height (in): 2.063
  

  
- Grease Fitting Thread Size: 1/8 NPT
  

  
- Height: 9.63
  

  
- Housing: Pillow Block, Four Bolt
  

  
- Housing Base: Solid
  

  
- Housing Color: Gray
  

  
- Housing Construction: Split Two Piece
  

  
- Housing Material: Cast Iron
  

  
- Housing Style: Pillow Block
  

  
- I.D.: 3.4375
  

  
- Inner Race Heat Treat Method: Case Carburized Inner Ring
  

  
- Inner Race Length (in): 5
  

  
- Insert Material: 52100 Bearing Steel
  

  
- Insert Number: RCI-307
  

  
- Internal Clearance: Standard
  

  
- Length: 16.5
  

  
- Locking: Double Collar Mount
  

  
- Lubrication Type: Lithium; EP; NLGI#2
  

  
- Max Operating Temperature (F): 220
  

  
- Maximum Speed (RPM): 1500
  

  
- Measure Unit: Inch
  

  
- Misalignment Capability: ±3.0° Misalignment - Static Only
  

  
- Misalignment Type: Static Only
  

  
- Outer Ring Land Profile: Standard
  

  
- Overall Height (in): 7.75
  

  
- Overall Length (in): 13.75
  

  
- Overall Width (in): 5
  

  
- Platform: RPB Series
  

  
- Radial Dynamic Load Capacity (lb): 15320
  

  
- Replaceable Insert: Yes
  

  
- Retainer Material: Steel
  

  
- Rolling element: Tapered Roller
  

  
- Seal: Felt Labyrinth Seal
  

  
- Series: RPB
  

  
- Width: 6.75
  
## Product documents / software:

- [Catalog Page](https://documents.mrosupply.com/product_documents/RP/RPB%20500-C4/MCC11012E_Sec_I14.pdf)
- [Drawing](https://documents.mrosupply.com/product_documents/RP/RPB%20500-C4/RPB-4.gif)
- [Instruction Sheet](https://documents.mrosupply.com/product_documents/RF/RFPA%20110C/740-0021%2520Rev%25205-02.pdf)
- [3D Drawing IGES](https://documents.mrosupply.com/product_documents/RP/RPB%20307-4/regalpts_beloit_EPTCAD-RPB-307-4-DEFAULT_CmFrN90.IGS)

## Product's reviews:
- Response - Very knowledgeable sales rep. Excellent delivery time. Very important when supply chains are challenging.
- 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.
- Excelent - excelent




## 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.