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Addax Drive Shaft Composite Coupling LRR650.825

The Rexnord Addax Composite Coupling LRX 650.825 is a high-capacity composite floating shaft engineered for demanding industrial cooling tower power transmission systems. Designed for extreme long-span applications, it delivers exceptional torque transfer, reduced drivetrain stress, and superior corrosion resistance without requiring intermediate support bearings.

  • Industrial cooling tower drive systems
  • Vertical pump drive applications
  • Petrochemical and refinery processing systems
  • Paper mills and printing equipment
  • Industrial compressor systems
  • High-humidity and corrosive industrial environments

This advanced composite coupling improves system reliability while reducing maintenance, vibration, and bearing wear in continuous-duty industrial environments.

  • Continuous-fiber composite spacer significantly reduces overall system weight
  • Patented unitized flex elements eliminate fretting corrosion and lubrication needs
  • 316 stainless steel hubs and hardware provide outstanding corrosion resistance
  • High-strength composite construction supports long-span installations without center bearings
  • Lightweight design lowers motor and gearbox overhung bearing loads
  • Excellent vibration and shock damping improves drivetrain stability
  • Low thermal expansion maintains dimensional stability during temperature fluctuations
  • Factory-balanced to ISO 1940 G6.3 standards for smooth high-speed operation

 

It is engineered for high-horsepower industrial applications requiring long spans, lightweight construction, and stable continuous operation.

  • Model: LRX 650.825
  • Torque Capacity: Up to 36,200 lb-in (4,090 Nm) continuous rating
  • Power Capacity: Up to 500 HP (373 kW)
  • Maximum Bore Capacity: Up to 5.06 in (130 mm)
  • Maximum DBSE (Span Distance): Up to 275 in (7,000 mm)
  • Dynamic Balance Standard: ISO 1940 G6.3 compliant
  • Spacer Construction: Continuous-fiber composite floating shaft
  • Hardware Material: 316 stainless steel
  • Flex Element Design: Patented unitized composite flex elements
  • Thermal Stability: Low coefficient of thermal expansion
  • Support Bearing Requirement: No intermediate support bearings required

Addax Composite Couplings Catalog

Additional information

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