Newly Re-designed P-Series Gearbox improves Backlash, Corrosion Resistance and Center Distance between Input and Outputs! 

Servo-Beam Motor Shaft Couplings

Shaft couplers are a critical component in servo motor applications because they position shafts and handle misalignment issues. The high precision requirements of servo applications require flexible motor couplings that maintain high accuracy and repeatability while delivering minimal backlash.
Bellows couplings are typically used to connect custom servo motors to linear systems because they are lightweight and deliver a high degree of accuracy and repeatability. There are, however, more cost-efficient alternatives that provide the same results for servo motors and other high-performance applications.  


Precision Engineered Flexible Motor Couplings

The patented Servo-Beam™ motor couplings are the best replacement for expensive and delicate bellows couplings. These shaft couplers are a true servo coupling exhibiting torsional rigidity, zero backlash, high RPM capability and superior life.
Ondrives.US Metal Servo-Beam™ motor shaft couplings are constructed with 420 stainless steel flexible beams and 416 stainless steel or aluminum hubs. They can operate at up to 10,000 rpm, up to 7 degrees angular compensation and with torques up to 300 in-lbs.
Polymer Servo-Beam™ couplings have flexible beams of an engineered polymer and aluminum hubs. Servo shaft couplers can handle speeds up to 10,000 rpm and torques up to 200 in-lbs.

Selecting the Right Shaft Coupler for Your Servo Motor Application

Choosing the wrong motor shaft coupling can cause misalignment issues that accelerate wear and cause equipment downtime. Our engineers developed a White Paper, “How to select Shaft Couplings”, to assist you in finding the most appropriate shaft to shaft coupling for your application.

If you require customization for our flexible servo couplings, please contact our application engineers to discuss your needs.
Couple to almost any shaft diameter with our Bore Reducers and attach your servo motor shaft coupling to an Ondrives.US Precision Ground Shaft, available from stock.

The Ondrives.US Advantage: The superior coupling for Servo applications

  • Zero Backlash
  • Up to 7° angular compensation
  • Flexibility of a bellows coupling at half the cost.
  • Torsional stiffness and strength of a disc coupling
  • 420 Stainless Steel flexible beams
  • Aluminum or stainless-steel hubs
  • RPM up to 10,000
  • Torque to 300 in-lbs.
  • Servo motor shaft coupling bore sizes from 1/8 inch to 32mm
  • Bore reducers are available for odd combination bores

Contact Us for Misalignment Shaft Couplings  

Ondrives.US engineers motor shaft couplings and other precision gears and drive components for demanding applications. Our Certifications and Standards are a testament to our commitment to delivering well-engineered, high-quality products.
Request a quote for metal or polymer misalignment shaft couplings or contact us to discuss your needs for a modified or custom product.