# Smith Bearing HR-3/4 Heavy Stud-Type Cam Follower 0.750" OD 7/16-20 Thread Hex Head Slot Sealed - MROSupply.com

***Smith Bearing HR-3/4 heavy stud-type cam follower with 0.750" roller OD, 7/16-20 UNF thread, and hex head slot drive. Rated 2,140 lbs dynamic and 4,150 lbs static capacity. Unsealed design with needle bearing construction for high radial loads in cam actuation and linear motion systems.***



## Product details:

- Catalog number: HR-3/4
- SKU: 2788734
- Price: ***$15.97*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Smith Bearings](https://www.mrosupply.com/brands/smith-bearings/)
- Category: 
    - [Cam Followers](htts://www.mrosupply.com/bearings/cam-yoke-roller-bearings/cam-followers/)
    - [Cam & Yoke Roller Bearings](htts://www.mrosupply.com/bearings/cam-yoke-roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.080 lb
- Technicall support: contact supplier for technical support on 800-932-0076


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


## Product attributes;

  
- Basic Dynamic Rating (lbs): 2140
  

  
- Eff. Thread Min.: 3/8
  

  
- Lube Fitting Size: 3/16
  

  
- Max. Static Capacity (lbs): 4150
  

  
- Min. Boss Dia.: 1/2
  

  
- Oil Hole Dia.: 3/32
  

  
- Oil Hole Location: 1/4
  

  
- Recom. Bore: .4375
  

  
- Recom. Bore Tolerance: +.0005/-.0000
  

  
- Recom. Torque (lbs-in): 300
  

  
- Roller O.D.: .750
  

  
- Roller O.D. Tolerance: +.000/-.001
  

  
- Roller Width: .500
  

  
- Roller Width Tolerance: +.000/-.005
  

  
- SMITH Bearing Number: HR-3/4
  

  
- Stud Dia.: .4375
  

  
- Stud Dia. Tolerance: +.001/-.000
  

  
- Stud Length: 7/8
  

  
- Thread U.N.F. Class 2A: 7/16-20
  
## Product documents / software:

- [2D CAD: PDF](https://documents.mrosupply.com/product_documents/HR/HR-3/4/HR-3-4_bnH3COW.pdf)
- [Plane](https://documents.mrosupply.com/product_documents/HR/HR-2-3/4/5b8ee87d-e58c-4bed-bd95-32ad31b4b5df_lxEHeXp.JPG)
- [3D CAD: STP](https://documents.mrosupply.com/product_documents/HR/HR-3/4/HR-3_4_3_ayRT8LO.STP)

## Product's reviews:
- Cam folowers - Excellent price and service!




## 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.