Description
The TB Woods 6J-1 1/8 is a Size 6, high-strength cast iron Type J Sure-Flex Plus coupler flange designed for reliable power transmission in HVAC and industrial drive applications. Engineered for durability and precise alignment, this coupler flange is a direct-fit component within the TB Woods Sure-Flex Plus coupling system — a trusted elastomeric jaw coupling series widely used in fan, pump, and blower drive assemblies.
Key Features
- Size 6 Sure-Flex Plus Type J coupler flange
- High-strength cast iron construction for long-lasting durability
- 1-1/8″ bore for compatibility with standard shaft sizes
- 1/4″ x 1/8″ keyseat for positive, torque-transmitting shaft engagement
- Designed for use with TB Woods Sure-Flex Plus elastomeric sleeve elements
- Jaw-style coupling design absorbs shock and vibration to protect connected equipment
- Ideal for HVAC fan, pump, blower, and compressor drive applications
Product Specifications
- SKU: 6J-1 1/8
- Brand: TB Woods
- Coupling Size: 6
- Flange Type: Type J (Sure-Flex Plus)
- Material: High-Strength Cast Iron
- Bore Diameter: 1-1/8″
- Keyseat: 1/4″ x 1/8″
Application
The Sure-Flex Plus Type J flange is the standard jaw-style half coupling used to connect drive shafts in HVAC equipment including air handling units, centrifugal fans, hydronic pumps, and belt-driven blower assemblies. The elastomeric sleeve element (sold separately) fits between mating flanges to provide vibration dampening, misalignment compensation, and shock load protection — extending the service life of motors and driven equipment.






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