Overview
The TB Wood’s 5SCH78 is a Type SC bore-to-size spacer hub for Sure-Flex Plus flexible coupling systems, commonly used in industrial power transmission and mechanical drive applications. This hub accommodates a 7/8″ bore diameter and integrates with the 05 coupling size, providing intermediate shaft coupling where additional spacing is required between driver and driven equipment.
Key Features
- Sure-Flex Plus Technology: 4-way flexing action absorbs virtually all types of shock, misalignment, and end float
- Type SC Configuration: Bore-to-size spacer hub design compatible with 05 coupling size standards
- Cast Iron Construction: Durable, corrosion-resistant hub material rated for industrial duty cycles
- High Speed Rated: Maximum operating speed of 7600 rpm supports typical motor and pump applications
- Maintenance-Free Operation: The need for lubrication and maintenance is eliminated, providing clean, dependable, and quiet performance
Technical Specifications
- Bore Diameter: 7/8 inch (0.875″)
- Hub Diameter: 2 inches
- Hub Length Through Bore: 1-3/32 inches (1.09375″)
- Keyway Dimensions: 3/16 × 3/32 inch
- Maximum Operating Speed: 7600 rpm
- Material: Cast Iron
- Fastening: 5/16-18 UNC × 1/2″ L setscrew and 10 × 1-1/2″ capscrew
- Coupling Size: 05 (Type SC)
- Product Condition: New in Box
Typical Applications
The 5SCH78 spacer hub is widely used in industrial machinery requiring flexible shaft coupling with intermediate spacing:
- Centrifugal and gear pump applications
- Motor-to-gearbox transmission systems
- Process equipment requiring vibration damping
- HVAC and refrigeration compressor packages
- Industrial fan and blower drive systems
- Agricultural and food processing equipment
Compatibility & Replacements
Compatible With
- TB Wood’s Sure-Flex Plus 05 coupling size assemblies
- Type SC flange configurations
- Standard bore-to-size applications requiring 7/8″ shaft diameter
- Motor and gearbox input/output shafts up to 7600 rpm
Replaces / Drop-In Replacement For
The 5SCH78 is a standard spacer hub component within the Sure-Flex Plus 05 coupling family. Verify compatibility with your system integrator before ordering.
Works With
- TB Wood’s Sure-Flex Plus elastomeric coupling sleeves (EPDM, Neoprene, Hytrel, Urethane)
- Type J, S, SC, B, and C flange configurations
- Standard industrial shaft couplings rated up to 7600 rpm
- OEM equipment using Sure-Flex Plus coupling standards
