Overview
The Dodge PX90 Para-Flex elastomeric tire coupling element is a precision-engineered flexible coupling component for industrial machinery requiring misalignment compensation and vibration damping. This elastomeric tire coupling element provides flexible torque transmission with vibration isolation, shock load cushioning, and requires no lubrication. The PX90 size is a standard offering in Dodge’s industry-proven Para-Flex coupling line, widely used in motor-driven equipment, conveyors, pumps, and compressors where reliable power transmission and equipment protection are critical.
Key Features
- Para-Flex is designed with a patented cording that transmits torque, offers a wear indicator, and absorbs shock loads to prevent damage to connected equipment
- Vibration isolation and shock load cushioning reduce stress on bearing and motor components
- Wear indicator alerts users when the element should be replaced
- Close-coupled shaft spacing for compact installation
- No routine maintenance or lubrication required
- Element ejection lock during peak torque and high-speed applications extends element life, with reinforcement at the tire element split to reduce fatigue during shock loading
Technical Specifications
The coupling features a maximum speed of 2800 rpm, parallel misalignment tolerance of 0.125 in, and is available with natural rubber construction. This standard flexible tire coupling element has a 9-1/4 in outside diameter and handles 4502 in-lb torque with a temperature range of -45 to 180 deg F. The element material is natural rubber, making it suitable for most industrial environments. Angular misalignment capability is 4 degrees, while axial misalignment tolerance reaches 0.3125 inches for applications with minor shaft offset. Horsepower rating is 7.15 hp at 100 RPM. The torsional stiffness is 1088 in-lb/deg.
Typical Applications
The Dodge PX90 Para-Flex coupling element excels in industrial power transmission systems including:
- Centrifugal and positive displacement pumps
- HVAC equipment and compressor drives
- Conveyor and material handling equipment
- Motor-driven machinery requiring vibration isolation
- General industrial equipment where shaft misalignment compensation is needed
- Applications subject to intermittent shock loads or variable-speed operation
Compatibility & Replacements
Compatible With
- Dodge Para-Flex coupling hubs and flange assemblies (PX90 size)
- Standard shaft couplings with close-coupled spacing
- Industrial motors and variable frequency drives (VFDs)
- Both rigid and flexible mounting configurations
Replaces / Drop-In Replacement For
- Dodge 011109 (standard PX90 element with natural rubber)
- Dodge 011300 (neoprene construction alternative for higher temperature applications)
- Dodge 010192 (composite rubber/neoprene variant)
Works With
- Dodge Para-Flex coupling assemblies and all PX90-rated hub configurations
- Standard shaft alignment and power transmission practices
- Preventive maintenance programs using the built-in wear indicator
- Both OEM equipment and retrofit/upgrade installations
