# TB Woods 3J78 Sure-Flex Plus Flange - Size 3, Type J, 7/8" Bore - MROSupply.com

***TB Woods 3J78 Sure-Flex Plus Type J flange for Size 3 elastomeric sleeve couplings with 7/8" finished bore. Sintered carbon steel construction with setscrew locking and 3/16" x 3/32" keyseat. Rated for 78 in-lb continuous torque at up to 9,200 RPM. Pairs with any matching TB Woods Type J flange and an EPDM, Neoprene, Hytrel, or Urethane sleeve.***



## Product details:

- Catalog number: 3J78
- SKU: 337698
- Price: ***$11.57*** 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: 0.300 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: 7/8 in
  

  
- Bore size (in): 7/8
  

  
- Bore tolerance: +.0005 to +.0015
  

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

  
- Component WR2 (lbs ft2): 0.0009
  

  
- Component WR²: 0.0009
  

  
- Construction type: Finish bore with keyway
  

  
- Coupling size: 3
  

  
- Dimension (in) (C): 51/64
  

  
- Dimension (in) (D): 2 1/16
  

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

  
- Dimension (in) (S): 3/16
  

  
- Dimension (in) (T): 25/64
  

  
- Dimension (in.) (E): 13/32
  

  
- Flange diameter: 2.062
  

  
- Horsepower Rating at 100 RPM: 1
  

  
- Keyseat (in): 3/16 x 3/32
  

  
- Keyseat size: 3/16 in x 3/32 in
  

  
- Length through bore: 0.796875
  

  
- Material type: Sintered carbon steel
  

  
- Max angular gap misalignment: 0.035 in
  

  
- Max angular misalignment: 1°
  

  
- Max compatible bore size: 0.875
  

  
- Max parallel misalignment: 1
  

  
- Max RPM: 9200
  

  
- Max speed: 9200
  

  
- Min compatible bore size: 0.375
  

  
- Outside diameter: 2.0625
  

  
- Power rating at 100 RPM: 0.09 kW
  

  
- Screw size: Setscrew
  

  
- Screw type: Flange, Type J
  

  
- Set screw distance: 0.1875
  

  
- Setscrew length: 0.25
  

  
- Setscrew length (in): 1/4
  

  
- Setscrew size, location: 1/4 20 UNC, One over KS and at 90 Degrees
  

  
- Setscrew torque requirement: 3
  

  
- Setscrew Torque Requirment (ft lbs): 3
  

  
- SF flange length: 0.390625
  

  
- SF hub diameter: 1.5
  

  
- SF hub length: 5
  

  
- Torque: 78 in-lb
  

  
- Torque rate: 78 in/lbs
  
## Product documents / software:

- [Catalog Product Section](https://documents.mrosupply.com/product_documents/4J/4J25MM/p-1957-tbw-a4_type-j-sure-flex-plus_9YWsA5y.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 3J78 Sure-Flex Plus Flange - Size 3, Type J, 7/8" Bore - MROSupply.com`:
- [Dodge 022704 D-Flex 3J elastomeric sleeve coupling flange with 7/8" bore, sintered steel construction, and 9200 RPM maximum speed. Bored-to-size shaft attachment for precision fit in D-Flex Type J sleeve coupling applications.](https://www.mrosupply.com/products/117854/as-markdown/)
- [Martin 3J 7/8 Quadra-Flex coupling hub, size 3J with 7/8" bore. Steel construction with 2.062" outside diameter. Compatible with JEM, JEMS, EM, E, N, H, and HS elastomeric sleeves for flexible coupling applications.](https://www.mrosupply.com/products/249650/as-markdown/)

## Product's reviews:
- Tb woods - Excelent recomiendo 100%
- 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
- Sleeve - Thanks for quick service and delivery was not long!
- Sales - I have all good experiences with your staff.
Thank you for the support.