Crown Engineering 41907 Coupler End 4J 5/8 Inches

Product Description

The CROWN ENGINEERING 41907 is a Wood's-style coupler end designed for jaw-type flexible coupling assemblies. This component mates with a corresponding coupler hub or spider insert to transmit torque between rotating shafts in mechanical drive systems. The 41907 is configured for the 4J coupling size with a 5/8-inch bore, making it a direct-fit piece for applications where precise shaft engagement and reliable power transmission are required. HVAC technicians, millwrights, and mechanical contractors typically install this type of coupler end when servicing or replacing flexible drive connections on fans, blowers, and pumps.

This coupler end suits residential and light commercial HVAC equipment, as well as general mechanical systems where jaw-type flexible couplings are standard. Typical installations include blower shaft assemblies, pump drives, and fan motor connections that use the 4J coupling family. The 5/8-inch bore accommodates standard motor and equipment shafts of that diameter.

Key Features

• 4J jaw-type coupling size for compatibility with standard 4J coupling assemblies
• 5/8-inch bore for direct shaft engagement without modification
• Wood's-style coupler end design for use with matching spider inserts and hubs
• Suitable for blower, fan, and pump drive applications in HVAC and mechanical systems

Compatibility

Designed as an OEM-style replacement coupler end for jaw-type flexible coupling assemblies using the 4J coupling size with a 5/8-inch bore shaft.

Installation Notes

Installation should be performed by a qualified technician or millwright familiar with flexible coupling assemblies. De-energize and lock out the drive motor before removing or installing any coupling components. Ensure the shaft is clean and free of burrs before seating the coupler end, and verify alignment between drive and driven shafts after assembly to prevent premature wear on the spider insert.

Technical Specifications

• Coupling Size: 4J
• Bore: 0.625 inches (5/8 inches)
• Coupling Style: Jaw-type flexible coupler end

Standard Information

• Brand: CROWN ENGINEERING
• Manufacturer Part Number: 41907