# TB Woods 8SCH178 Sure-Flex Plus Hub - Size 8, Type SC, 1-7/8" Bore - MROSupply.com

***TB Woods 8SCH178 Sure-Flex Plus Type SC hub for Size 8 elastomeric sleeve couplings. High-strength cast-iron construction with 1-7/8" finished bore and 1/2" x 1/4" keyseat. Rated for 1,475 in-lb torque with EPDM or Neoprene sleeves and 4,530 in-lb with Hytrel sleeves, up to 4,500 RPM.***



## Product details:

- Catalog number: 8SCH178
- SKU: 339030
- Price: ***$77.17*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [TB Woods](https://www.mrosupply.com/brands/tb-woods/)
- Category: 
    - [Hubs](htts://www.mrosupply.com/shaft-couplings-and-collars/elastomeric-sleeve-couplings/components/hubs/)
    - [Components](htts://www.mrosupply.com/shaft-couplings-and-collars/elastomeric-sleeve-couplings/components/)
    - [Elastomeric Sleeve Couplings](htts://www.mrosupply.com/shaft-couplings-and-collars/elastomeric-sleeve-couplings/)
    - [Shaft Couplings and Collars](htts://www.mrosupply.com/shaft-couplings-and-collars/)
- Unit of measure: each
- Weight: 3.200 lb
- Technicall support: contact supplier for technical support on 888-829-6637


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


## Product attributes;

  
- Bore size: 1 7/8 in
  

  
- Bore size (in): 1-7/8
  

  
- Bore tolerance: +.0005 to +.0015
  

  
- Capscrew size: Qty 4 5/16 x 2 1/4
  

  
- Capscrew size (in): Qty 4 5/16 x 2 1/4
  

  
- Capscrew torque requirement: 7
  

  
- Capscrew torque requirment (ft lbs): 18
  

  
- Component WR2 (lbs ft2): 0.0354
  

  
- Component WR²: 0.0354
  

  
- Construction type: Finish bore with keyway
  

  
- Coupling size: 8
  

  
- Dimension (in) (C): 1 23/32
  

  
- Dimension (in) (H): 3-1/4
  

  
- Dimension (in) (S): 1/2
  

  
- Horsepower Rating at 100 RPM: 52
  

  
- Keyseat (in): 1/2 x 1/4
  

  
- Keyseat size: 1/2 in x 1/4 in
  

  
- Length through bore: 1.71875
  

  
- Material type: High strength cast iron
  

  
- Max angular gap misalignment: 0.094 (in) with EPDM/Neoprene Sleeves and 0.025 (in) with Hytrel Sleeves
  

  
- Max angular misalignment: 1° with EPDM/neoprene sleeves and 1/4° with hytrel sleeves
  

  
- Max compatible bore size: 2.375
  

  
- Max parallel misalignment: 8
  

  
- Max RPM: 4500
  

  
- Max speed: 4500
  

  
- Min compatible bore size: 0.4375
  

  
- Power rating at 100 RPM: 1.8 kW with EPDM or Neoprene sleeve, 5.4 kW with Hytrel sleeve
  

  
- Screw size: Setscrew
  

  
- Screw type: Hub, spacer
  

  
- Set screw distance: 0.5
  

  
- Setscrew length: 0.5
  

  
- Setscrew length (in): 1/2
  

  
- Setscrew size, location: 3/8 16 UNC, over keyseat
  

  
- Setscrew torque requirement: 23
  

  
- Setscrew Torque Requirment (ft lbs): 23
  

  
- SF hub diameter: 3.25
  

  
- Torque: 1,475 in-lb with EPDM or Neoprene sleeve, 4,530 in-lb with Hytrel sleeve
  

  
- Torque rate: 1,475 (in-lbs) with EPDM or Neoprene sleeve; 4,530 (in-lbs) with Hytrel sleeve
  
## Product documents / software:

- [Catalog Product Section](https://documents.mrosupply.com/product_documents/11/11SC10014/p-1957-tbw-a4_type-sc-spacer-couplings_97SLXQ4.pdf)
- [Full Catalog](https://documents.mrosupply.com/product_documents/L1/L19050MM/p-1690-tbw_QTKXQZG.pdf)
- [Installation And Maintenance Manual](https://documents.mrosupply.com/product_documents/13/13S238/p-7888-tbw_7vuiGcx.pdf)
- [Selection Guide](https://documents.mrosupply.com/product_documents/13/13S238/p-1957-tbw-a4_sure-flex-plus-selection-guide_Z0MkHdR.pdf)

## Product's reviews:
- Great service! - It was all sent perfectly and on time
- Muy buen servicio y rapidez en la entrega - Primera vez q compro con esta compañía, recomiendo ampliamente comprar con ellos y claro q volveria a comprar otra vez muy buen servicio y entrega rapida
- Sales - I have all good experiences with your staff.
Thank you for the support.
- Sleeve - Thanks for quick service and delivery was not long!