# TB Woods 8S178 Sure-Flex Plus Flange - Size 8, Type S, 1-7/8" Bore - MROSupply.com

***TB Woods 8S178 Sure-Flex Plus Type S flange for Size 8 elastomeric sleeve couplings with a 1-7/8" finished bore and 1/2" x 1/4" keyseat. High-strength cast-iron construction rated for 1,475 in-lb torque with EPDM or Neoprene sleeves and 4,530 in-lb with Hytrel sleeves at up to 4,500 RPM.***



## Product details:

- Catalog number: 8S178
- SKU: 341728
- Price: ***$61.73*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [TB Woods](https://www.mrosupply.com/brands/tb-woods/)
- 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: 4.400 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
  

  
- Bore tolerance (in): +0.0005 to +0.0015
  

  
- Component WR2 (lbs ft2): 0.1041
  

  
- Component WR²: 0.1041
  

  
- Construction type: Finish bore with keyway
  

  
- Coupling size: 8
  

  
- Dimension (in) (C): 2 3/32
  

  
- Dimension (in) (D): 5.45
  

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

  
- Dimension (in) (S): 3/8
  

  
- Dimension (in) (T): 29/32
  

  
- Dimension (in.) (E): 3/4
  

  
- Flange diameter: 5.45
  

  
- 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: 2.09375
  

  
- 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
  

  
- Outside diameter: 5.45
  

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

  
- Screw size: Setscrew
  

  
- Screw type: Flange, Type S
  

  
- Set screw distance: 0.375
  

  
- Setscrew length: 0.375
  

  
- Setscrew length (in): 3/8
  

  
- Setscrew size, location: 3/8 16 UNC, One over KS and at 90 Degrees
  

  
- Setscrew torque requirement: 23
  

  
- Setscrew Torque Requirment (ft lbs): 23
  

  
- SF flange length: 0.90625
  

  
- SF hub diameter: 3.25
  

  
- SF hub length: 3/4
  

  
- 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/13/13S238/p-1957-tbw-a4_type-s-sure-flex-plus_6glsuFz.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)
## Alternate products to `TB Woods 8S178 Sure-Flex Plus Flange - Size 8, Type S, 1-7/8" Bore - MROSupply.com`:
- [Martin 8S 1 7/8 coupling hub for Quadra-Flex, Martin-Flex, or Go-Flex couplings. Steel construction with 1-7/8" bore and 5.450" outside diameter. Used with elastomeric inserts (JEM, E, N, H, SD, MD, XD, HT, FG) to connect shafts in power transmission systems.](https://www.mrosupply.com/products/250165/as-markdown/)

## Product's reviews:
- Sleeve - Thanks for quick service and delivery was not long!
- Sales - I have all good experiences with your staff.
Thank you for the support.
- 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