# Kop-Flex 3 1/2F EB FR FB 2280642 FASTS Gear Coupling Size 3.5 Extended Bore Rough Bore Finished Bore 11" OD 3.75" Max Bore - MROSupply.com

***Kop-Flex 3 1/2F EB FR FB (Rexnord PN 2280642) Size 3.5 FASTS gear coupling with extended bore, rough bore, and finished bore options, 11" outside diameter, 3.75" max bore. Lubricated design with lifetime metallic seal for extended service life and 300% greater lubricant capacity versus standard gear couplings.***



## Product details:

- Catalog number: 2280642
- SKU: 2292835
- Price: ***$4,707.33*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [KOP-FLEX](https://www.mrosupply.com/brands/kop-flex/)
- Category: 
    - [Complete Units](htts://www.mrosupply.com/shaft-couplings-and-collars/gear-couplings/complete-units/)
    - [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: 127.340 lb
- UPC: 662384011890
- Returns: Yes
- Technicall support: contact supplier for technical support on 800-626-2120


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


## Product attributes;

  
- Bolt Type: Exposed
  

  
- Bore Size Max: 3.75
  

  
- Bore Type: Finished Bore
  

  
- Configuration: Flex Rigid
  

  
- Coupling Size: 3.5
  

  
- Coupling Type: Gear Coupling
  

  
- Fastener Quantity: 8
  

  
- Fastener Size & Length: 3/4 x 3 3/8
  

  
- Length Through Bore (in): 4.03125
  

  
- Lube/Non-Lube: Lubricated
  

  
- Material: Medium Carbon Steel
  

  
- Max Bore w/standard key for Flex Hub: 3.75
  

  
- Measurement System: Imperial
  

  
- Min Compatible Bore Size (in): 0
  

  
- Min Compatible Bore Size Flex Hub (in): 0
  

  
- Min Compatible Bore Size Rigid Hub (in): 2.25
  

  
- OD: 11
  

  
- Rating HP @ 100 RPM: 235
  

  
- Speed Max (rpm): 6000
  

  
- Style: FASTS
  

  
- Tooth Profile: Straight Faced Involute Hub tooth
  

  
- Torque [Max] (in-lb): 296000
  

  
- Torque Rating (in-lb): 148000
  
## Product documents / software:

- [ Instruction Sheet](https://documents.mrosupply.com/product_documents/3%20/3%201/2F%20EB%20FR%20FB/FORM1900-01.PDF)
- [Catalog Page](https://documents.mrosupply.com/product_documents/1%20/1%201/2F%20EB%20FR%20FB/KIP04-p138.pdf)
- [Installation Manual - Revised 2016](https://documents.mrosupply.com/product_documents/22/93/2293010/multi-brands2F199_krkKRol.pdf)