TB Woods 6H Insert

Replace worn or failing coupling elements with the TB Woods 6H Insert, a high-performance Hytrel sleeve engineered for extreme torque applications and harsh operating environments. This single-piece solid Hytrel insert is specifically designed for size 6 Sure-Flex Plus couplers, offering a rated torque of 1,800 in-lbs—a significant upgrade for heavy-duty drive systems. Unlike standard EPDM or Neoprene sleeves, Hytrel material provides superior chemical resistance and operates reliably across a temperature range of -65°F to 250°F. The 6H Hytrel coupling sleeve features a torsional stiffness of 10,000 in-lb/rad, making it the ideal choice for high-load equipment such as centrifugal pumps, compressors, and industrial blowers. This Sure-Flex Plus 6H insert accommodates up to 0.25° of angular misalignment and 0.010 inches of parallel misalignment, protecting your motor and driven equipment from vibration and shock loads without the need for lubrication.

Key Benefits:

• High Torque Capacity: Formulated for heavy-duty power transmission, handling up to 1,800 in-lbs of torque with a maximum speed of 6,000 RPM.
• Industrial Durability: The Hytrel elastomer resists hydrocarbons, petroleum-based oils, and most common industrial solvents.
• Maintenance-Free Operation: The 4-way flexing action absorbs shock and vibration, eliminating metal-to-metal contact and the need for grease.
• Sure-Flex Plus Compatibility: 100% interchangeable with existing TB Woods size 6 flanges (Type S, C, and SC).
• Wide Temperature Range: Maintains physical properties in extreme cold and high-heat HVACR and mechanical room environments.

Common Questions:

Can I use a 6H Hytrel insert to replace a 6E EPDM sleeve?
While the 6H Hytrel insert fits the same size 6 flanges, Hytrel is much stiffer than EPDM. Switching to Hytrel changes the system's torsional dampening; it is typically used for higher torque but offers less misalignment capacity than EPDM.

How do I identify if my coupling needs a 6H sleeve?
Inspect the existing sleeve for the "6H" marking or measure the outside diameter (3.75 inches). Hytrel sleeves are typically white or orange in color and are solid (not split).

What is the difference between the 6H and 6HS inserts?
The 6H is a one-piece solid construction, whereas the 6HS is a two-piece split design. The solid 6H insert is preferred for new assemblies or when the shafts can be moved during installation for maximum structural integrity.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.