# Kop-Flex 3F MMHUB 1961259 FASTS Gear Coupling Mill Motor Hub, Size 3, Carbon Steel, 9.4375" OD, 3.125" Max Bore, 5.125" Length Through Bore - MROSupply.com

***Kop-Flex 3F MMHUB (Rexnord PN 1961259) is a Size 3 FASTS gear coupling mill motor hub made of carbon steel. It features a 9.4375" outside diameter, 3.125" maximum bore size, and 5.125" length through bore. This hub is designed for NEMA mill-motor frame applications and incorporates the FASTS metallic seal for extended lubricant life.***



## Product details:

- Catalog number: 1961259
- SKU: 2292887
- Price: ***$942.36*** 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: 25.460 lb
- UPC: 662384946697
- 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: 3.125
  

  
- Bore Type: Rough Bore
  

  
- Component Type: Mill Motor Hub
  

  
- Coupling Size: 3
  

  
- Coupling Type: Gear Coupling
  

  
- Height (in): 7.70
  

  
- Hub Diameter (in): 4.125
  

  
- Length (in): 8.70
  

  
- Length Through Bore (in): 5.125
  

  
- Length Through Bore (mm): 130.175
  

  
- Lube/Non-Lube: Lubricated
  

  
- Material: Carbon steel
  

  
- Max Bore w/standard key: 3.125
  

  
- Measurement System: Imperial
  

  
- Model: FASTS
  

  
- OD: 9.4375
  

  
- Size Code: 3
  

  
- Sleeve Outside Diameter (in): 9.4375
  

  
- Speed Max (rpm): 6800
  

  
- Tooth Profile: Straight
  

  
- Torque Rating (in-lb): 101000
  

  
- Width: 8.90
  
## Product documents / software:

- [ Instruction Sheet](https://documents.mrosupply.com/product_documents/3F/3F%20MMHUB/FORM1900-01.PDF)
- [Catalog Page](https://documents.mrosupply.com/product_documents/2F/2F%20MMHUB0304/KIP04-p141.pdf)
- [Installation Manual - Revised 2016](https://documents.mrosupply.com/product_documents/22/93/2293010/multi-brands2F199_krkKRol.pdf)