# Zero-Max SD040R ServoClass Single-Flex Servo Coupling, Size 40, Stainless Steel Flex Elements - MROSupply.com

***Zero-Max SD040R ServoClass single-flex servo coupling, size 40, with stainless steel flex elements. Designed for precision motion control in servo drive systems, this coupling accommodates parallel and angular misalignment while maintaining torsional stiffness. The stainless steel flex elements provide corrosion resistance and durability in demanding applications.***



## Product details:

- Catalog number: SD040R
- SKU: 2785877
- Price: ***$83.10*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Zero-Max](https://www.mrosupply.com/brands/zero-max/)
- Category: 
    - [Single Disc Couplings](htts://www.mrosupply.com/shaft-couplings-and-collars/disc-couplings/complete-units/single-disc-couplings/)
    - [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: 1
  

  
- Axial misalignment: 0.012 inches, 0.30 mm
  

  
- Axial stiffness: 457 lbs/inch, 80 N/mm
  

  
- Clamp Screw Size (M): M4, M4
  

  
- Clamp Screw to Bore (A1, Reduced Hub): 0.433 in, 11 mm
  

  
- Clamp Screw to Bore (A2): 0.669 Inches, 17 mm
  

  
- Clamp Screw to End of Hub (C): 0.177 Inches, 4.5 mm
  

  
- Distance Between Shaft Ends (DBSE): 0.118 in, 3 mm
  

  
- Hub Length (LB): 0.610 Inches, 15.5 mm
  

  
- Inertia: See Catalog, See Catalog
  

  
- Inside Diameter of Flex Disc (K): 0.768 Inches, 19.5 mm
  

  
- Max Speed: 10, 000 RPM
  

  
- Maximum Bore: 0.9375 inches, 24 mm
  

  
- Minimum Bore: 0.3125 inches, 8 mm
  

  
- Operating Torque: 89 in-lbs, 10 Nm
  

  
- Outside diameter: 1.732 Inches, 44 mm
  

  
- Overall Length: 1.339 inches, 34 mm
  

  
- Parallel misalignment: 0.001 inches, 0.02 mm
  

  
- Reduced Hub Diameter (N): 1.165 Inches, 29.6 mm
  

  
- Tightening torque: 30 in-lbs, 3.4 Nm
  

  
- Torsional stiffness: 20, 000 Nm/rad
  
## Product documents / software:

- [Installation Instructions](https://documents.mrosupply.com/product_documents/27/85/2785859/ServoClassCouplingInstallationGuide.pdf)
- [Product Catalog](https://documents.mrosupply.com/product_documents/27/85/2785859/Servo-Class-Couplings-Catalog.pdf)

## Product's reviews:
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