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Overview
The Martin 11E Quadra-Flex coupling sleeve is a proven flexible coupling element engineered for general-purpose industrial power transmission. This two-piece, split-sleeve design accommodates the 011 coupling size and offers reliable torsional flexibility, ease of installation, and excellent misalignment tolerance. EPDM synthetic rubber construction provides superior chemical resistance and broad operating temperature range, making it ideal for equipment subjected to shock loads and vibration.
Key Features
- Two-Piece Design with Retaining Ring: Simple installation and removal without unbolting flanges
- Torsional Flexibility & Misalignment Compensation: Flexes up to 1 degree to compensate for angular shaft misalignment
- Shock & Vibration Damping: Absorbs torsional shock loads for extended equipment life
- EPDM Rubber Material: Chemical-resistant, general-purpose elastomer rated -30 to 275°F (-34 to 135°C)
- Wide Application Range: Suitable for blowers, compressors, conveyors, feeders, generators, mills, and presses
Technical Specifications
- Coupling Size: 011
- Sleeve Type: Two-Piece with Retaining Ring
- Material: EPDM Synthetic Rubber
- Length: 4 in
- Outside Diameter: 8.198 in
- Nominal Torque Capacity: 4530 in-lb
- Maximum Speed: 3600 rpm
- Operating Temperature Range: -30 to 275°F (-34 to 135°C)
- Misalignment Tolerance: Up to 1 degree angular
- Color: Black
Typical Applications
The Martin 11E coupling sleeve is ideal for:
- Industrial pumps and motors
- Conveyor and material-handling systems
- Compressors and blowers
- Mill and press equipment
- Generator and dredge applications
- Any machinery requiring torsional shock absorption and misalignment tolerance
Compatibility & Replacements
Compatible With
- All Martin Quadra-Flex series flexible coupling flanges (hubs)
- Martin Type J, Type S, and Type B flange options
- 011 coupling size assemblies
- Shafts requiring flexible torque transmission with angular misalignment compensation
Replaces / Drop-In Replacement For
- OEM and original Martin 11E sleeve replacements
- Equivalent Quadra-Flex 11E elastomer elements from prior production runs
- Consult Martin documentation or your system integrator to confirm interchangeability with flanges already in service
Works With
- Martin Quadra-Flex flange assemblies and hubs
- Standard coupling installation tools and hand tools
- Any motor, pump, compressor, or generator with compatible shaft mounting
- Industrial power transmission systems up to 3600 rpm
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