# Kop-Flex 1B SB RHUB 1961812 Model B Gear Coupling Rigid Hub, Size 1, Standard Bore, 2" Max Bore, 4" OD, 1.25" Length Through Bore, Carbon Steel - MROSupply.com

***Kop-Flex 1B SB RHUB (Rexnord PN 1961812) is a Size 1 Model B gear coupling rigid hub with standard bore. Made of carbon steel, it has a 4" outside diameter, 2" max bore, and 1.25" length through bore. This rigid hub is designed for use with Model B gear coupling sleeves and components.***



## Product details:

- Catalog number: 1961812
- SKU: 2293152
- Price: ***$642.55*** 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: 3.060 lb
- UPC: 662384947052
- 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: Shrouded
  

  
- Bore Size Max: 2
  

  
- Component Type: Rigid Hub
  

  
- Coupling Size: 1
  

  
- Coupling Type: Gear Coupling
  

  
- Height (in): 2.90
  

  
- Includes: Rigid Hub
  

  
- Length (in): 4.50
  

  
- Length Through Bore (in): 1.25
  

  
- Length Through Bore (mm): 31.75
  

  
- Lube/Non-Lube: Lubricated
  

  
- Material: Carbon steel
  

  
- Max Bore w/standard key for Rigid Hub: 2
  

  
- Measurement System: Imperial
  

  
- Model: Model B
  

  
- OD: 4
  

  
- Series: Waldron
  

  
- Size Code: 1
  

  
- Width: 4.50
  
## Product documents / software:

- [ Instruction Sheet](https://documents.mrosupply.com/product_documents/1B/1B%20SB%20RHUB/FORM1900-01.PDF)
- [Catalog Page](https://documents.mrosupply.com/product_documents/3%20/3%201/2B%20SB%20FR%20FB/KIP04-p156.pdf)
- [Installation Manual - Revised 2016](https://documents.mrosupply.com/product_documents/22/93/2293010/multi-brands2F199_krkKRol.pdf)