# NTN UCPX17-307D1 Heavy-Duty 2-Bolt Pillow Block Bearing - 3-7/16 in (87.3 mm) Bore, Set Screw Lock, Cast Iron Housing - MROSupply.com

***NTN UCPX17-307D1 is a heavy-duty 2-bolt pillow block bearing unit with a 3-7/16 in (87.3 mm) bore. The cast iron housing features a set screw locking mechanism for secure shaft mounting. Designed for high-load industrial applications such as conveyors, fans, and material handling equipment.***



## Product details:

- Catalog number: UCPX17-307D1
- SKU: 269416
- Price: ***$512.38*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- 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: 32.170 lb
- UPC: 4547359502954


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


## Product attributes;

  
- A (in): 4.0313
  

  
- B (in): 3.7795
  

  
- Bearing Number: UCX17-307D1
  

  
- Bearing number: UCX17-307D1
  

  
- Bearing Type: Ball Bearing
  

  
- d (in): 3.4375
  

  
- Dynamic Load Rating: 21600 lbf
  

  
- Dynamic load rating: 21600 lbf
  

  
- End Type: Open
  

  
- End type: Open
  

  
- F (in): 0.3858
  

  
- H (in): 4.0000
  

  
- H1: 1.5625 in
  

  
- H2: 7.8750 in
  

  
- Housing Construction: 1 Piece
  

  
- Housing construction: 1 Piece
  

  
- Housing Material: Cast Iron
  

  
- Housing material: Cast iron
  

  
- Housing Number: PX17D1
  

  
- I.D.: 3.4375 in
  

  
- J (in): 11.1562
  

  
- L (in): 15.0000
  

  
- L1: 4.3437 in
  

  
- Locking Device: Set Screw
  

  
- Locking device: Set screw
  

  
- Lubrication: Relubricatable
  

  
- N (in): 1.0625
  

  
- N1: 1.1875 in
  

  
- O.D.: 6.2992 in
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Performance: Medium duty
  

  
- S: 1.5630 in
  

  
- Seal Material: Nitrile Rubber
  

  
- Seal material: Nitrile rubber
  

  
- Seal Type: Contact
  

  
- Seal type: Contact
  

  
- Static Load Rating: 16100 lbf
  

  
- Static load rating: 16100 lbf
  

  
- Type: Pillow Block Unit
  

  
- Width: 3.7795 in
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048459/lock-Unit--Set-Screw--Cast-Housing--UCP-Type_S_CqPtBRi.png)
## Alternate products to `NTN UCPX17-307D1 Heavy-Duty 2-Bolt Pillow Block Bearing - 3-7/16 in (87.3 mm) Bore, Set Screw Lock, Cast Iron Housing - MROSupply.com`:
- [Dodge 126823 P2B-SCM-307 two-bolt pillow block bearing features 3-7/16" (87.312mm) bore, medium duty set screw locking, cast iron housing, and 218 series ball bearing insert. Non-expansion fixed design with DualGuard seals.](https://www.mrosupply.com/products/130155/as-markdown/)
- [SealMaster MP-55 2-bolt pillow block bearing, 3-7/16" bore, set screw lock, Gold Line. Cast iron housing with 52100 bearing steel insert, black oxide coated, felt-labyrinth seal. Pre-lubricated for general industrial applications.](https://www.mrosupply.com/products/418488/as-markdown/)
- [SealMaster MPD-55 is a 3-7/16" bore 2-bolt pillow block ball bearing unit with a cast iron solid base housing. Features double set screw locking and a standard felt seal for general industrial applications.](https://www.mrosupply.com/products/2255323/as-markdown/)
- [IPTCI UCPX17-55 2-Bolt Pillow Block Set Screw mounted ball bearing unit with 3-7/16" bore. Wide inner race insert with set screw locking. Cast iron housing. Standard lip seal. Suitable for medium-duty industrial shafting applications.](https://www.mrosupply.com/products/218329/as-markdown/)
- [AMI UCPX17-55 pillow block bearing features 3-7/16" (87.313mm) bore, medium duty cast iron housing, and set screw locking mechanism. Chrome steel insert with wide inner ring design for demanding industrial applications.](https://www.mrosupply.com/products/1982/as-markdown/)
- [NTN UCPX-3.7/16 is an Ultra-Class 2-bolt heavy-duty pillow block unit with a 3-7/16 in (87.3 mm) bore. Features a set screw locking mechanism and a cast iron housing. Designed for high-load industrial applications such as conveyors, fans, and heavy machinery.](https://www.mrosupply.com/products/269402/as-markdown/)
- [Moline Bearing 29421307 3-7/16" ME2000 Mounted Ball Bearing, Medium Duty Set Screw Lock 2-Bolt Pillow Block. Interchangeable with industry-standard Type E dimensions. Cast iron housing with set screw locking for secure shaft mounting.](https://www.mrosupply.com/products/2491644/as-markdown/)
- [Dodge 140539 P2B-SCM-307-DRY two-bolt pillow block bearing featuring 3-7/16" bore, 65 degree set screw medium duty locking, cast iron housing, DualGuard seals, 218 series ball bearing for dry application environments.](https://www.mrosupply.com/products/5785465/as-markdown/)






## 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.