Overview
The Zero-Max SC040R-041-019 servo coupling is a precision double flex shaft coupler from the ServoClass line, designed for demanding servo motor and motion control applications. This coupling features stainless steel flex elements that provide reliable torque transmission while accommodating angular, parallel, and axial shaft misalignment. The SC040R series is ideal for industrial automation, semiconductor manufacturing, packaging equipment, and precision machinery where accurate, low-backlash power transmission is essential.
Key Features
- 89 in-lbs operating torque capacity for servo-class applications
- Double flex design accommodates multiple planes of misalignment
- 10,000 RPM maximum speed rated for high-speed servo motors
- Axial stiffness of 228 lbs/inch minimizes deflection and ensures precise positioning
- Stainless steel flex elements provide corrosion resistance and durability
- Low backlash construction for repeatable motion control
Technical Specifications
- Operating Torque: 89 in-lbs
- Maximum Speed: 10,000 RPM
- Axial Stiffness: 228 lbs/inch
- Clamp Screw Size: M4.0
- Tightening Torque: 30.0 in-lbs (3.4 Nm)
- Flex Element Material: Stainless Steel
- Series: ServoClass Double Flex (SC040R)
- Bore Configuration: 041 and 019 designations per Zero-Max specification
Typical Applications
- Servo motor to load coupling in motion control systems
- Precision machinery requiring low-backlash power transmission
- Semiconductor and electronics manufacturing equipment
- Packaging and labeling machinery
- Robotics and automated assembly systems
- Medical device manufacturing equipment
- Printing and converting machinery
Compatibility & Replacements
Compatible With
- Servo motors rated up to 89 in-lbs torque
- Industrial automation controllers and drives
- Precision motion control systems
- Load applications with moderate to high-speed requirements
Replaces / Drop-In Replacement For
- Other SC040R ServoClass double flex configurations with matching bore diameters
- Verify specific bore and keyway requirements with your system integrator
Works With
- Standard servo motor shaft interfaces
- Precision spindles and load-bearing shafts
- Motion control systems requiring low-backlash couplings
- Systems tolerating up to 228 lbs/inch axial deflection




















