9SM6730 - Lincoln Electric M6730 Flexible Coupling Disk

Genuine Lincoln Electric Coupling Disk for Wire Feeders

The Lincoln Electric Coupling Disk (SKU: 9SM6730, often referenced as M6730) is a critical mechanical component designed for specific Lincoln Electric wire feed systems. As an authorized distributor of Lincoln Electric parts, Josef Gas provides this genuine OEM replacement to ensure the longevity and reliability of your industrial welding equipment. This coupling disk serves as the interface between the electric drive motor and the gearbox or wire drive mechanism.

Engineered from high-quality, durable flexible material, this disk is designed to transmit torque efficiently while compensating for minor angular misalignments between the motor shaft and the driven load. Its flexibility also plays a vital role in dampening vibrations generated during operation, which protects sensitive bearings and gears from premature wear. In industrial environments where welding machines operate continuously, the integrity of the drive system is paramount for consistent wire delivery and arc stability.

Failure of the coupling disk can lead to erratic wire feeding, slippage, or complete loss of drive. Replacing a worn or cracked disk with this genuine Lincoln part restores factory-spec performance. It is manufactured to precise tolerances to ensure a perfect fit within the motor assembly, eliminating the need for modifications during installation. Trust in OEM quality to maintain the high standards of your Lincoln Electric welding machinery.

Key Technical Benefits:

• Vibration Isolation: Reduces mechanical noise and protects drivetrain components.


• Torque Transmission: Non-slip design ensures consistent wire feed speeds.


• OEM Compatibility: Guaranteed fit for specified Lincoln wire feeders.