TB Wood's 11SC-HX2 7 8 SF Keyed Hub

Description:

The TB Wood's 11SC-HX2 7/8 SF Keyed Hub is used in industrial power transmission systems as a Sure-Flex® spacer hub for connecting rotating shafts within flexible coupling assemblies. Commonly installed in pumps, compressors, conveyors, fans, blowers, mixers, and heavy-duty industrial machinery. Maintenance teams, OEMs, and system integrators use this keyed hub for coupling replacement, drive system maintenance, machinery retrofits, and new equipment installations.

Applications:

The TB Wood's 11SC-HX2 7/8 SF Keyed Hub is commonly used in industrial automation environments including conveyor systems, pump and compressor drives, material handling equipment, mining machinery, HVAC systems, and manufacturing production lines where reliable torque transmission, vibration damping, and shaft alignment are essential for continuous operation.

Technical Specifications:

• Manufacturer: TB Wood's (Regal Rexnord)
• Model / Part Number: 11SC-HX2 7/8 SF Keyed Hub (11SCH278)
• Product Type: Sure-Flex® Spacer Hub
• Coupling Series: Sure-Flex® SC
• Coupling Size: 11
• Bore Diameter: 2-7/8 in.
• Bore Type: Finished Bore with Keyway
• Keyway Size: 3/4 × 3/8 in.
• Material: High-Strength Cast Iron
• Hub Diameter: 5-1/4 in.
• Length Through Bore: 2-23/32 in.
• Maximum Operating Speed: 3600 RPM
• Mounting: Shaft-mounted with 1/2-13 UNC setscrew
• Compatible Sleeve Types: EPDM, Neoprene, Hytrel, and Urethane Sure-Flex® sleeves
• Application Environment: Industrial power transmission systems

Common Replacements:

• TB Wood's 11SCH278 Sure-Flex® Spacer Hub
• Lovejoy 11SCH2-7/8 S-Flex Spacer Coupling Hub
• Martin 11H 2-7/8 QUADRA-FLEX Coupling Hub