# Kop-Flex 4 1/2F FHUB 1960731 FASTS Gear Coupling Flex Hub, Size 4.5, Carbon Steel, 13.625" OD, 4.75" Max Bore, 6.5" Length Through Bore - MROSupply.com

***Kop-Flex 4 1/2F FHUB (Rexnord PN 1960731) is a Size 4.5 FASTS gear coupling flex hub made of carbon steel. It features a 13.625" outside diameter, 4.75" max bore, and 6.5" length through bore. This flex hub is designed for use with FASTS gear couplings, offering a reliable connection with a metallic lifetime seal.***



## Product details:

- Catalog number: 1960731
- SKU: 2292937
- Price: ***$1,287.44*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [KOP-FLEX](https://www.mrosupply.com/brands/kop-flex/)
- Category: 
    - [Hubs](htts://www.mrosupply.com/shaft-couplings-and-collars/gear-couplings/components/hubs/)
    - [Components](htts://www.mrosupply.com/shaft-couplings-and-collars/gear-couplings/components/)
    - [Gear Couplings](htts://www.mrosupply.com/shaft-couplings-and-collars/gear-couplings/)
    - [Shaft Couplings and Collars](htts://www.mrosupply.com/shaft-couplings-and-collars/)
- Unit of measure: each
- Weight: 59.940 lb
- UPC: 662384145090
- Returns: Yes
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Bore Size Max: 4.75
  

  
- Bore Type: Rough Bore
  

  
- Component Type: Flex Hub
  

  
- Coupling Size: 4.5
  

  
- Coupling Type: Gear Coupling
  

  
- Height (in): 7.00
  

  
- Hub Diameter (in): 6.5
  

  
- Length (in): 11.90
  

  
- Length Through Bore (in): 6.5
  

  
- Length Through Bore (mm): 165.1
  

  
- Lube/Non-Lube: Lubricated
  

  
- Material: Carbon steel
  

  
- Max Bore w/standard key: 4.75
  

  
- Measurement System: Imperial
  

  
- Model: FASTS
  

  
- OD: 13.625
  

  
- Size Code: 4.5
  

  
- Sleeve Outside Diameter (in): 13.625
  

  
- Speed Max (rpm): 4770
  

  
- Tooth Profile: Straight
  

  
- Torque Rating (in-lb): 318000
  

  
- Width: 12.00
  
## Product documents / software:

- [ Instruction Sheet](https://documents.mrosupply.com/product_documents/4%20/4%201/2F%20FHUB/FORM1900-01.PDF)
- [Catalog Page](https://documents.mrosupply.com/product_documents/4%20/4%201/2F%20FHUB/KIP04-p136.pdf)
- [Installation Manual - Revised 2016](https://documents.mrosupply.com/product_documents/22/93/2293010/multi-brands2F199_krkKRol.pdf)