TB Woods 8S-1 1/4 Flange

The TB Woods 8S-1 1/4 Flange is a heavy-duty, high-strength cast iron flange engineered for demanding power transmission in HVACR and industrial pump applications. As part of the Sure-Flex Plus series, this Type S coupler flange features a 1-1/4 inch finished bore with a standard 1/4" x 1/8" keyway, providing a precise slip-fit on standard shafts. Designed for maximum torque density and reliability, the 8S114 handles up to 4,500 RPM and provides a 4-way flexing action when paired with EPDM, Neoprene, or Hytrel sleeves. This flexible shaft coupling component excels at absorbing parallel misalignment up to 0.020 inches and angular misalignment up to 1 degree, significantly reducing bearing wear and protecting connected equipment from catastrophic shock loads. The robust cast iron construction ensures long-term torsional stability in industrial coupling systems without the need for periodic lubrication or complex maintenance schedules.

• Enhanced Torque Capacity: The Sure-Flex Plus design offers up to 25% increase in torque rating compared to previous generations, allowing for smaller coupling sizes in high-load applications.
• Advanced Misalignment Compensation: Protects your motor and driven equipment by absorbing shock, vibration, and end float through its 4-way flexing action.
• Maintenance-Free Operation: Eliminates the need for grease or oil; the simple sleeve coupling design requires no bolts, gaskets, or seals for standard installation.
• Precision Fit: Features a factory-machined 1-1/4" bore with dual setscrews (one over the keyway and one at 90 degrees) for a secure, non-slip shaft connection.

What is the maximum speed rating for the size 8S flange?
This high-strength cast iron flange is rated for a maximum speed of 4,500 RPM, making it suitable for high-speed motor and pump configurations.

Does this flange include the flexible sleeve?
No, this is a single Type S flange. A complete assembly requires two flanges and one Sure-Flex Plus sleeve (EPDM, Neoprene, or Hytrel depending on your environment).

What are the keyway dimensions for the 1-1/4" bore?
The bore includes a standard 1/4" wide by 1/8" deep keyseat to ensure compatibility with standard 1.250-inch industrial shafts.

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.