Lovejoy 69790405251 Universal Grid Coupling Spring

Product Description

The LOVEJOY 69790405251 is an alloy steel universal grid spring designed as the flexible grid element in a grid-style coupling assembly. The grid spring absorbs shock loads and dampens vibration between connected shafts, reducing wear on connected equipment such as pumps, compressors, and gearboxes. It fits coupling size code 1090 and delivers a torque capacity of 30000 inch-pounds with a maximum operating speed of 4000 RPM. At 2.06 pounds, the part is a direct-replacement grid element for existing coupling hubs, requiring no modification to the hub or sleeve components. Licensed mechanics and millwrights are the typical installers in industrial and commercial drive applications.

This grid spring is suited for use in industrial power transmission systems where a resilient, shock-absorbing coupling element is required. The size code 1090 grid fits coupling assemblies with a coupling size of 6.31 inches. It is commonly installed in pumping stations, HVAC equipment drives, conveyor systems, and other rotating machinery where torsional flexibility and vibration isolation are design requirements. Fits Part G2090 per supplier data.

Key Features

• Alloy steel construction for high strength and fatigue resistance under cyclic torque loads
• 30000 inch-pound torque capacity for demanding drive applications
• Maximum operating speed of 4000 RPM
• Coupling size 6.31 inches — size code 1090 — for direct fitment to matching hubs and sleeves
• Grid-spring design absorbs shock and dampens torsional vibration to protect connected machinery
• Sold as grid spring element only — compatible hubs and sleeves sold separately

Compatibility

Designed to fit coupling size code 1090 grid-style coupling assemblies. Per supplier data, this grid spring fits Part G2090. This listing covers the grid spring element only; hubs and cover sleeves are separate components.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. De-energize and lock out the drive system completely before disassembling the coupling. Inspect hub teeth and cover seals for wear before installing the replacement grid spring. Refer to the coupling manufacturer service documentation for proper grid seating procedure and lubrication requirements — do not operate the coupling dry without confirming lubrication specifications.