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Ruland BS21-10-10-A Ruland bellows couplings are zero-backlash, torsionally stiff, and have a balanced design. They are made from black anodized aluminum hubs and stainless steel bellows to offer superior performance in precision servo applications. The stainless steel bellows are ideal for transmitting torque due to their thin walls allowing the coupling to easily flex while [...]

  • Zero-backlash with high torsional stiffness for high accuracy and repeatability
  • Manufactured from high strength 2024 aluminum with a balanced design for reduced vibration at speeds up to 10,000 RPM
  • Thin walls of the bellows allow the coupling to flex easily while remaining rigid under torsional loads
  • Hardware tests beyond DIN 912 12.9 standards for maximum torque capabilities
  • Ruland bellows couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant

  • Zero-backlash with high torsional stiffness for high accuracy and repeatability
  • Manufactured from high strength 2024 aluminum with a balanced design for reduced vibration at speeds up to 10,000 RPM
  • Thin walls of the bellows allow the coupling to flex easily while remaining rigid under torsional loads
  • Hardware tests beyond DIN 912 12.9 standards for maximum torque capabilities
  • Ruland bellows couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant

  • Zero-backlash with high torsional stiffness for high accuracy and repeatability
  • Manufactured from high strength 2024 aluminum with a balanced design for reduced vibration at speeds up to 10,000 RPM
  • Thin walls of the bellows allow the coupling to flex easily while remaining rigid under torsional loads
  • Hardware tests beyond DIN 912 12.9 standards for maximum torque capabilities
  • Ruland bellows couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant