• Choose a Rexnord Addax Composite Coupling
    as YOUR cooling tower coupling

Precision. Power. Performance.

You want a trusted name when it comes to providing engineered power transmission products that improve productivity and efficiency. Rexnord® provides superior products for your industrial applications worldwide. We work closely with you to reduce maintenance costs, eliminate redundant inventories and prevent equipment downtime.

Why choose Addax® ?

We thrive on providing the best value with corrosion resistance, high misalignment. Fatigue resistance, low weight and ease of installation.

Rexnord® offers Addax® products to satisfy all your cooling tower coupling needs. Floating shaft couplings are used to connect units which are relatively far apart. Such arrangements are particularly suited to transmit power into areas where moisture, dust or corrosive conditions would adversely affect the driving machinery. Typical applications include cooling tower fan drives, paper machinery, printing press, pumps and compressors.

The Addax® coupling are designed and manufactured specifically for cooling tower applications. Performance ratings and materials of construction are in accordance with the Cooling Tower Institute (CTI) standards and specifications.

Rexnord® is the largest coupling manufacturer in the world and has the most comprehensive global sales and customer service team in the industry. Rexnord® associates are experts in cooling tower coupling applications and are available to assist you 24/7 if an emergency arises.

Composite floating shafts can also be utilized to provide lighter weight, longer spans or higher speeds than can be achieved with steel tubes. Rexnord® can design and manufacture light weight, advanced composite couplings to suit your needs.

Contact with Rexnord® for solutions to your most troublesome applications.

The rigid center member and light weight design of the Addax® coupling span the distance from motor to gearbox, without intermediate support bearings.

2D/3D CAD Models

Access CAD models and drawings for a wide variety of Rexnord brand PT products.

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How it`s done

Standard construction consist of:

  • a flanged composite spacer;
  • patented composite flexible elements;
  • 316 Stainless Steel hubs and;
  • 316 Stainless Steel hardware.

All couplings are dynamically balanced to meet ANSI/AGMA 9000-C90 (R96), Class 9 specifications, ISO 1940 Class G6.3.
K-500 Monel hardware and other options are available to suit other corrosive environments.

Our advantages

The benefits of using Addax

 Low Weight
(assembled weight less than 100 pounds)
Reduced Mass
Reduced Bearing Loads up to 80%
Reduced Inertia
 Simplified Installation
Increase Bearing Life
Reduce Vibration
Corrosion Resistance Chemical attack resistance Extend Service Life
Reduce Maintenance
Increase Safety
Low Cost of Ownership
Low Coefficient of
Thermal Expansion
Dimensional Stability Reduce Vibration
Reduce Stresses
Increase Operating Range
Continuous Fiber
Composite Spacer
 Infinite Fatigue Life  Low Cost of Ownership
Unitized Flex
Eliminate Fretting
Infinite Fatigue Life
Simplified Installation
Low Cost of Ownership
Longer Service Life
Reduced Maintenance
Increased Safety
High Misalignment
Reduced Equipment Stress
Increased Life
Make installation easier
Reduce Ownership Costs
High Strength-to-Weight Ratio  Increase Stiffness
Higher critical speed
Eliminate Harmonics
Eliminate Steady Bearings

8 more reasons to choose Addax®

  • Up to 5.06 inches (130 mm) bore capacity
  • Up to 12.75 inches (324 mm) shaft diameter
  • Up to 36,200 in-lb (4,090 Nm) torque capacity
  • Up to 500 HP
  • Custom spacer lengths, up to 275 inches (6,985 mm)
  • Patented unitized flex elements provide 1° of misalignment per element and eliminate fretting
  • Ambient form -22° up to 175°F
  • Best price