Lovejoy is pleased to be able to provide quality grid couplings covering a large number of industry standard sizes and lengths. The Lovejoy grid style coupling has proven itself in performance and popularity over a wide range of applications.

    Lovejoy’s grid style coupling design has demonstrated its ability to dampen vibration by as much as 30% and can cushion shock loads that could cause damage to both the driving and driven equipment. The tapered grid spring design absorbs impact energy by spreading the energy out over the full length of the grid spring thus reducing the magnitude of the torque spikes.

    The Lovejoy design uses a curved hub tooth profile which creates a progressive contact with the flexible grid spring as the application torque increases. This feature provides a more effective and efficient transmission of power in properly aligned couplings.

    Lovejoy’s versatile design of industry standard hubs and grid springs for both horizontal and vertical cover styles allow Lovejoy couplings to be interchangeable with other industry standard grid couplings and components.

    Proper grid coupling installation and maintenance can add to a longer coupling life. Grid spring replacement is simple and can be performed at a fraction of the cost and time of a complete coupling.
    The Lovejoy Grid coupling is an ideal coupling for applications where excellent performance is desired and additional requirements for vibration dampening may exist. The Horizontal Split Cover design is recommended in applications where there may be some constraints on the diameter of the coupling. The vertical design is recommended for applications where higher speed is one of the requirements.
Features
  • Designed for ease of maintenance and grid spring replacement
  • High tensile grid springs ensure superior coupling performance and longer coupling life
  • Split covers allow for easy access to grid springs
  • Interchangeable with industry standard grid couplings
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Item #

Item Name

Description 

Bore Size 

Set Screw Style Coupling Size (Dimension T)

Keyway Size (W x D)

Length thru Bore

Lovejoy® Grid Coupling Size

69790405511 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 2-3/4 5/8X5/16KW N/A 2 3/4 in N/A 5/16-18 N/A 5/8 x 5/16 in N/A 3.880 in98.55 mm N/A 1090
69790405512 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 2-7/8 3/4X3/8KW N/A 2 7/8 in N/A 5/16-18 N/A 3/4 x 3/8 in N/A 3.880 in98.55 mm N/A 1090
69790404386 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 2-15/16 3/4X3/8KW N/A 2 15/16 in N/A 5/16-18 N/A 3/4 x 3/8 in N/A 3.880 in98.55 mm N/A 1090
69790405513 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 3" 3/4X3/8KW N/A 3 in N/A 5/16-18 N/A 3/4 x 3/8 in N/A 3.880 in98.55 mm N/A 1090
69790405514 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 3-1/8 3/4X3/8KW N/A 3 1/8 in N/A 5/16-18 N/A 3/4 x 3/8 in N/A 3.880 in98.55 mm N/A 1090
69790405515 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 3-1/4 3/4X3/8KW N/A 3 1/4 in N/A 5/16-18 N/A 3/4 x 3/8 in N/A 3.880 in98.55 mm N/A 1090
69790405516 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 3-3/8 7/8X7/16KW N/A 3 3/8 in N/A 5/16-18 N/A 7/8 x 7/16 in N/A 3.880 in98.55 mm N/A 1090
69790406158 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 3-7/16 7/8X7/16KW N/A 3 7/16 in N/A 5/16-18 N/A 7/8 x 7/16 in N/A 3.880 in98.55 mm N/A 1090
69790405517 N/A Grid Coupling Hub w/ Keyway N/A 1090 HUB 3-1/2 7/8X7/16KW N/A 3 1/2 in N/A 5/16-18 N/A 7/8 x 7/16 in N/A 3.880 in98.55 mm N/A 1090
69790405519 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 2.4980/2.4990KW&PH N/A 2 1/2 in N/A No Setscrew N/A 5/8 x 5/16 in N/A 4.750 in120.65 mm N/A 1100
69790405520 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 2.6230/2.6240 KW&PH N/A 2 5/8 in N/A No Setscrew N/A 5/8 x 5/16 in N/A 4.750 in120.65 mm N/A 1100
69790405521 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 2.7480/2.7490 KW&PH N/A 2 3/4 in N/A No Setscrew N/A 5/8 x 5/16 in N/A 4.750 in120.65 mm N/A 1100
69790405522 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 2.8730/2.8740 KW&PH N/A 2 7/8 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 4.750 in120.65 mm N/A 1100
69790405523 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 2.9980/2.9990 KW&PH N/A 3 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 4.750 in120.65 mm N/A 1100
69790405524 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.1220/3.1235 KW&PH N/A 3 1/8 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 4.750 in120.65 mm N/A 1100
69790405525 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.2470/3.2485 KW&PH N/A 3 1/4 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 4.750 in120.65 mm N/A 1100
69790405526 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.3720/3.3735 KW&PH N/A 3 3/8 in N/A No Setscrew N/A 7/8 x 7/16 in N/A 4.750 in120.65 mm N/A 1100
69790405527 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.4970/3.4985 KW&PH N/A 3 1/2 in N/A No Setscrew N/A 7/8 x 7/16 in N/A 4.750 in120.65 mm N/A 1100
69790405528 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.6220/3.6235 KW&PH N/A 3 5/8 in N/A No Setscrew N/A 7/8 x 7/16 in N/A 4.750 in120.65 mm N/A 1100
69790405529 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.7470/3.7485 KW&PH N/A 3 3/4 in N/A No Setscrew N/A 7/8 x 7/16 in N/A 4.750 in120.65 mm N/A 1100
69790405530 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.8720/3.8735 KW&PH N/A 3 7/8 in N/A No Setscrew N/A 1 x 1/2 in N/A 4.750 in120.65 mm N/A 1100
69790405531 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1100 HUB 3.9970/3.9985 KW&PH N/A 4 in N/A No Setscrew N/A 1 x 1/2 in N/A 4.750 in120.65 mm N/A 1100
69790405532 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1110 HUB 2.9980/2.9990 KW&PH N/A 3 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 5.00 in127.00 mm N/A 1110
69790405533 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1110 HUB 3.1220/3.1235 KW&PH N/A 3 1/8 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 5.00 in127.00 mm N/A 1110
69790405534 N/A Grid Coupling Hub w/ Keyway & Puller Hole N/A 1110 HUB 3.2470/3.2485 KW&PH N/A 3 1/4 in N/A No Setscrew N/A 3/4 x 3/8 in N/A 5.00 in127.00 mm N/A 1110
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