Crown Engineering 41904 Woods Coupler End 3J 1/2 Inch

Product Description

The CROWN ENGINEERING 41904 is a Woods-style coupler end designed for use in mechanical power transmission applications. This component serves as one half of a jaw-type flexible coupling assembly, connecting rotating shafts in pumps, motors, blowers, and similar driven equipment. The 3J jaw profile mates with a standard 3J coupling spider insert, and the 0.5-inch bore accommodates common fractional shafts found in light commercial and industrial systems. Installation is handled by millwrights, HVAC technicians, and pump mechanics as part of routine equipment maintenance or replacement service.

The 41904 coupler end is suited for pump and blower drive trains where jaw-type flexible couplings are the specified connection method. It is commonly installed in HVAC air-handling equipment, hydronic pump assemblies, and light industrial machinery that requires a reliable, vibration-dampening shaft connection. The 3J designation indicates jaw size and must be paired with a matching 3J spider insert and mating coupler half for a complete coupling assembly.

Key Features

• 3J jaw profile compatible with standard 3J flexible coupling spider inserts
• 0.5-inch bore for fractional shaft connections
• Jaw-type design provides torsional flexibility and vibration damping
• Drop-in replacement form factor for Woods-style coupler ends
• Compact design suits space-constrained motor and pump mounting arrangements

Compatibility

Designed as an OEM-style replacement coupler end for mechanical drive assemblies using the 3J jaw coupling standard with a 0.5-inch shaft bore.

Installation Notes

Installation should be performed by a qualified technician. De-energize and lock out the motor before removing or installing any coupling component. Ensure shaft and bore are clean and free of burrs before pressing or sliding the coupler end into position. Verify alignment of the mating coupler halves after assembly to prevent premature wear on the spider insert.

Technical Specifications

• Jaw Size: 3J
• Bore Size: 0.5 inches
• Coupling Style: Woods jaw-type coupler end

Standard Information

• Brand: CROWN ENGINEERING
• Manufacturer Part Number: 41904