# NTN ARP-3/4 Ultra-Class Pillow Block Unit - 3/4 inch Bore, Set Screw Lock, Cast Iron Housing - MROSupply.com

***NTN ARP-3/4 Ultra-Class pillow block unit with set screw lock, 3/4 inch bore, and cast iron housing. Designed for general industrial conveyor and machinery applications.***



## Product details:

- Catalog number: ARP-3/4
- SKU: 276869
- Price: ***$61.42*** Each
- Quantity: This vendor has a minimum order quantity of
2.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 2
(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: [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


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


## Product attributes;

  
- A (in): 1.5000
  

  
- B (in): 1.0039
  

  
- Bearing Number: A-AR204-012D1
  

  
- Bearing number: A-AR204-012D1
  

  
- Bearing Type: Ball Bearing
  

  
- d (in): 3/4
  

  
- Dynamic Load Rating: 3190 lbf
  

  
- Dynamic load rating: 3190 lbf
  

  
- End Type: Open
  

  
- End type: Open
  

  
- Finish/Coating: Black oxide
  

  
- H (in): 1-5/16
  

  
- H1: 0.5625 in
  

  
- H2: 2.5625 in
  

  
- Housing Construction: 1 Piece
  

  
- Housing construction: 1 Piece
  

  
- Housing Material: Cast Iron
  

  
- Housing material: Cast iron
  

  
- Housing Number: P204D1V50
  

  
- I.D.: 0.75 in
  

  
- J (in): 3-25/32
  

  
- L (in): 5.0000
  

  
- L1: 1.6563 in
  

  
- Locking Device: Set Screw
  

  
- Locking device: Set screw
  

  
- Lubrication: Relubricatable
  

  
- Max Rotational Speed: 5000 RPM
  

  
- N (in): 0.4375
  

  
- N1: 0.7813 in
  

  
- O.D.: 1.8504 in
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Performance: Light Duty
  

  
- S: 0.2953 in
  

  
- Seal Material: Nitrile Rubber
  

  
- Seal material: Nitrile rubber
  

  
- Seal Type: Contact
  

  
- Seal type: Contact
  

  
- Static Load Rating: 1495 lbf
  

  
- Static load rating: 1495 lbf
  

  
- Type: Pillow Block Unit
  

  
- Width: 1.0039 in
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/27/68/276885/ock-Unit-with-Set-Screw--High-Base--ARP-Type_S_QR9sRQk.png)
## Alternate products to `NTN ARP-3/4 Ultra-Class Pillow Block Unit - 3/4 inch Bore, Set Screw Lock, Cast Iron Housing - MROSupply.com`:
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- [Dodge 123580 P2B-VSC-012 two-bolt pillow block bearing with 3/4" bore, set screw locking, intermediate duty rating, 204 series ball bearing, cast iron housing, DualGuard seals with flingers, non-expansion configuration for fixed positioning.](https://www.mrosupply.com/products/126912/as-markdown/)
- [SKF SY 3/4 RM 2-bolt cast-iron pillow block bearing unit for 3/4-inch shaft with set screw locking. The pre-lubricated insert bearing is housed in a durable cast-iron housing for reliable performance on conveyor head shafts, fan supports, and general industrial drives.](https://www.mrosupply.com/products/326696/as-markdown/)
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- [AMI BP204-12 narrow pillow block bearing with 3/4" (19.05mm) bore diameter, set screw locking mechanism, cast iron housing, and chrome steel insert. Normal duty rating for standard industrial applications.](https://www.mrosupply.com/products/792825/as-markdown/)
- [SKF P2B 012-RM 2-bolt pillow block bearing unit for 3/4 inch shaft with set screw locking. Pre-lubricated insert in a cast-iron housing. Suitable for conveyor head shafts, fan supports, and general industrial drives.](https://www.mrosupply.com/products/5830811/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.