TB Wood's 7S x 1-5 8 Coupling Hub

Description:

The TB Wood's 7S x 1-5/8 Coupling Hub is used in industrial power transmission systems to connect rotating shafts while transmitting torque and accommodating shaft misalignment in flexible 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 coupling hub for equipment replacement, drive system maintenance, machinery retrofits, and new power transmission installations.

Applications:

The TB Wood's 7S x 1-5/8 Coupling Hub is commonly used in industrial automation environments including conveyor systems, pump and compressor drives, HVAC equipment, material handling machinery, mining operations, and manufacturing production lines where reliable torque transmission, vibration damping, and flexible shaft alignment are essential. Designed for use with Sure-Flex® elastomer sleeves, it provides maintenance-free operation while reducing shock loads and protecting connected equipment.

Technical Specifications:

• Manufacturer: TB Wood's (Regal Rexnord)
• Model / Part Number: 7S158
• Product Type: Sure-Flex® Coupling Hub (Type S Flange)
• Coupling Series: Sure-Flex® Plus
• Coupling Size: 7
• Bore Diameter: 1-5/8 in.
• Bore Type: Finished Bore with Keyway
• Keyway Size: 3/8 × 3/16 in.
• Material: High-Strength Cast Iron
• Outside Diameter: 4.625 in.
• Hub Diameter: 2-13/16 in.
• Length Through Bore: 1-27/32 in.
• Hub Length: 1.00 in.
• Setscrew Size: 5/16-18 UNC × 3/8 in.
• Maximum Operating Speed: 5,250 RPM
• Torque Capacity: 2,875 in-lb (with Hytrel® sleeve)
• Mounting: Shaft Mount with Keyway and Setscrew
• Compatible Sleeve: Sure-Flex® Size 7 EPDM, Neoprene, or Hytrel® Sleeve
• Application Environment: Industrial power transmission systems

Common Replacements:

• TB Wood's 7S158
• Dodge 7S158
• Lovejoy 7S158