TB Wood's 9SC-HX1 3 8 9SCH138 Timing Belt Sprocket

Description:

The TB Wood's 9SC-HX1 3/8 9SCH138 Spacer Coupling Hub is used in industrial power transmission systems to connect rotating shafts while transmitting torque and accommodating shaft misalignment in flexible spacer coupling assemblies. Commonly installed in pumps, compressors, conveyors, fans, blowers, mixers, and other heavy-duty industrial machinery. Maintenance teams, OEMs, and system integrators use this spacer coupling hub for equipment replacement, drive system maintenance, machinery retrofits, and new power transmission installations.

Applications:

The TB Wood's 9SC-HX1 3/8 9SCH138 Spacer Coupling Hub is commonly used in industrial automation environments including conveyor systems, pump and compressor drives, HVAC equipment, mining operations, material handling systems, and manufacturing production lines where reliable torque transmission, vibration damping, and flexible shaft alignment are essential. Designed for use with TB Wood's Sure-Flex® spacer coupling assemblies, it provides maintenance-free performance while allowing easier equipment servicing without disturbing connected machinery.

Technical Specifications:

• Manufacturer: TB Wood's (Regal Rexnord)
• Model / Part Number: 9SC-HX1 3/8 (9SCH138)
• Product Type: Spacer Coupling Hub
• Coupling Series: Sure-Flex® SC
• Coupling Size: 9
• Bore Diameter: 1-3/8 in.
• Bore Type: Finished Bore with Keyway
• Keyway Size: 5/16 × 5/32 in.
• Material: High-Strength Cast Iron
• Outside Diameter: 3.625 in.
• Length Through Bore: 1.969 in.
• Maximum Compatible Bore: 2.875 in.
• Maximum Operating Speed: 3,750 RPM
• Torque Rating: 2,340 in-lb (EPDM/Neoprene Sleeve), 7,200 in-lb (Hytrel® Sleeve)
• Horsepower Rating @ 100 RPM: 2.8 kW (EPDM/Neoprene), 8.5 kW (Hytrel)
• Setscrew Size: 3/8-16 UNC (Over Keyseat)
• Mounting: Shaft Mount with Keyway and Setscrew
• Compatible Sleeves: Sure-Flex® EPDM, Neoprene, and Hytrel® Spacer Sleeves
• Application Environment: Industrial power transmission systems

Common Replacements:

• TB Wood's 9SCH138
• Dodge 9SCH138
• Lovejoy 9SCH138