TB Woods 4JSC35-1 Flange

The TB Woods 4JSC35-1 Flange is a high-strength cast iron spacer flange engineered for demanding HVACR power transmission applications. Designed as a Size 4 Type SC Sure-Flex Plus component, this flange features a 1-inch finished bore and a standard 1/4" x 1/8" keyseat. By utilizing high-strength cast iron construction, the 4JSC35-1 offers significantly higher torque ratings compared to standard sintered metal or aluminum components, ensuring reliable torsional vibration damping in motor-to-pump or fan drive assemblies. This flexible coupling flange is specifically designed for use with Sure-Flex Plus EPDM, Neoprene, or Hytrel sleeves, facilitating easy installation and maintenance without disturbing the connected equipment's alignment. The SC design provides the necessary spacing for back-pull-out pump maintenance, making it a critical component for industrial maintenance technicians seeking to minimize system downtime and maintain precise shaft alignment in high-torque environments.

Key Technical Benefits

• High-Strength Cast Iron Construction: Delivers superior durability and handles higher torque loads than standard 4J alternatives.
• Precision 1-Inch Bore: Comes with a factory-machined 1-inch bore and 1/4" x 1/8" keyseat for immediate, secure shaft integration.
• Type SC Spacer Design: Enables simplified maintenance by allowing sleeve removal without moving the motor or the driven load.
• Optimized Dampening: When paired with Sure-Flex Plus sleeves, it effectively absorbs shock, vibration, and parallel/angular misalignment.
• Industry Standard Interchangeability: Compatible with all standard TB Woods Size 4 components for seamless field replacement.

Common Technical Questions

What is the difference between Type S and Type SC flanges?
The Type S is a standard flange, while the Type SC spacer flange provides additional axial spacing, typically used in pump applications to allow for seal maintenance without removing the prime mover.

Can this flange be used with any Size 4 sleeve?
Yes, the 4JSC35-1 is compatible with all Size 4 Sure-Flex Plus coupling materials, including EPDM (E), Neoprene (N), and Hytrel (H), depending on your application's chemical and temperature requirements.

Does the cast iron construction impact the RPM rating?
The high-strength cast iron allows for robust performance at standard industrial motor speeds; however, always verify the specific sleeve's RPM limit, as the elastomer usually dictates the assembly's maximum speed.

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.