# Zero-Max 6A77QD CD Composite Disc Coupling, Single-Flex, for QD Bushing - MROSupply.com

***Zero-Max 6A77QD CD composite disc coupling, single-flex design for use with QD bushings. This flexible coupling transmits torque while absorbing parallel and angular misalignment in general industrial applications. The composite disc pack provides maintenance-free operation and high torsional stiffness.***



## Product details:

- Catalog number: 6A77QD
- SKU: 2785413
- Price: ***$932.13*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Zero-Max](https://www.mrosupply.com/brands/zero-max/)
- Category: 
    - [Double Disc Spacer Type](htts://www.mrosupply.com/shaft-couplings-and-collars/disc-couplings/complete-units/double-disc-spacer-type/)
    - [Complete Units](htts://www.mrosupply.com/shaft-couplings-and-collars/disc-couplings/complete-units/)
    - [Disc Couplings](htts://www.mrosupply.com/shaft-couplings-and-collars/disc-couplings/)
    - [Shaft Couplings and Collars](htts://www.mrosupply.com/shaft-couplings-and-collars/)
- Unit of measure: each
- Returns: Yes
- Technicall support: contact supplier for technical support on 800-533-1731


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


## Product attributes;

  
- Angular misalignment: 3
  

  
- Axial misalignment: 0.160 inches, 4.1 mm
  

  
- Continuous Rated Torque: 15, 600 in-lbs, 1, 763 Nm
  

  
- Distance Between Shaft Ends (C): 1.01 inches, 25.7 mm
  

  
- Hub Length (T): 1.38 inches, 35.1 mm
  

  
- Inside Diameter of Disc-Pack (H): 3.13 inches, 79 mm
  

  
- Max Speed: 3, 900 RPM
  

  
- Outside Diameter (A): 7.75 inches, 197 mm
  

  
- Overall Length w/o Bushing (LB): 4.01 inches, 102 mm
  

  
- Parallel misalignment: 0.025 inches, 0.60 mm
  

  
- Peak Rated Torque: 31, 200 in-lbs, 3, 526 Nm
  

  
- QD Bushing Type: SF
  

  
- Torsional stiffness: 609, 303 Nm/rad
  

  
- Weight with Bushing: 29.5 lbs, 13.4 kg
  
## Product documents / software:

- [Installation Instructions](https://documents.mrosupply.com/product_documents/27/85/2785409/6a_CD_ASSY_MPEKw1G.pdf)
- [Product Catalog](https://documents.mrosupply.com/product_documents/27/85/2785409/Zero-Max_CD_Couplings_mTEpfHh.pdf)

## Product's reviews:
- Zero max coupling - EXCELENT JOB
- Happy - I have Not Installed yet
This Looks Good and Everyone is Thrilled
- Zero max coupling - EXCELENT JOB
- Zero max coupling - GOOD JOB