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All Product Types > INDUSTRIAL MOTION PRODUCTS > Couplings & Power Transmission Parts Catalog > Grid Couplings > Horizontal Split Cover Grid Couplings > Grid Coupling Hubs - Inch Bore / Keyway, Horizontal & Vertical Cover Style > Part Number 69790405511  
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Part Number 69790405511, Grid Coupling Hub w/ Keyway


    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



Unit of Measure: Imperial Metric Both

Notes  · Specifications  · Dimensional Data  · Performance Data  · Coupling Part Numbers  · Features

Notes

Disclaimer
Lovejoy: CAD Models are accurate envelope dimensions only. Features such as bore size and keyway are not rendered or are only representative. Contact Lovejoy Technical Support or refer to product catalogs for details.

Notes 
  • Size 1020 thru 1090 hubs are provided with clearance fit bores and 2 set screws at 90°.
  • Size 1100 thru 1200 hubs are provided with interference fit bores and no set screws.
Lovejoy machines Inch bores and keyways to meet tolerances define in the ANSI/AGMA 9002-B04 Standard.


Specifications

Description 
1090-HUB-2-3/4-5/8X5/16KW

Type
Grid Coupling

Hub Material
1045 Steel

Style
Bored

Color
Gray/Metallic

Bore Type
Finished Bore and Keyway

Weight
17.50 lb


Dimensional Data

Bore Size 
2 3/4 in

Set Screw Style Coupling Size (Dimension T)
5/16-18

Set Screw Style Coupling Location Size (Dimension SL)
1.030 in
26.16 mm

Keyway Size (W x D)
5/8 x 5/16 in

Length thru Bore
3.880 in
98.55 mm

Overall Length
7.880 in
200 mm

Outside Diameter (Horiontal Style Cover)
8.390 in
213.00 mm

Outside Diameter (Vertical Style Cover)
7.880 in
200.20 mm

Min. Bore (Dimensions ID1/ID2)
1.062 in
27.00 mm

Max. Bore (Dimensions ID1/ID2)
3.500 in
89.00 mm

Dimension FD
5.880 in
149.20 mm

Dimension FL
0.500 in
12.70 mm

Dimension HD
4.870 in
123.70 mm

Dimension G1
0.118 in
3.00 mm

Dimension L (Horizontal Style Cover)
4.800 in
121.92 mm

Dimension L (Vertical Style Cover)
1.860 in
47.24 mm

Dimension R
3.750 in
95.25 mm

Dimension SL
1.030 in
26.16 mm

Distance between Shaft Ends (Dimension G) - Normal Gap
0.118 in
3.00 mm

Cubic inches
92.02157 in³


Performance Data

Nominal Torque
33000.00 in·lb

Max. Speed (Horizontal Style Cover)
3600.00 rpm

Max. Speed (Vertical Style Cover)
4000.00 rpm

Max. Parallel Misalignment at Installation (Dimension P)
0.0080 in

Max. Parallel Misalignment during Operation (Dimension P)
0.016 in

Max. Angular Misalignment at Installation (X-Y)
0.007 in

Max. Angular Misalignment during Operation (X-Y)
0.028 in


Coupling Part Numbers

Lovejoy® Grid Coupling Size
1090

Falk™ Steelflex® Horizontal Cover Style Coupling Part Number
1090T10

Morse® / Browning® Grid-Flex Horizontal Cover Style Coupling Part Number
GF2090H

Dodge® Grid-Lign® Horizontal Cover Style Coupling Part Number
1090T10

Kop-Flex® / Kop-Grid® Horizontal Cover Style Coupling Part Number
1090H

Falk™ Steelflex® Vertical Cover Style Coupling Part Number
1090T20

Morse® / Browning® Grid-Flex Vertical Cover Style Coupling Part Number
GF2090V

Dodge® Grid-Lign® Vertical Cover Style Coupling Part Number
1090T20

Kop-Flex® / Kop-Grid® Vertical Cover Style Coupling Part Number
1090V


Features

Features 
  • High tensile, shot-peened alloy steel grid springs and precision machined hubs ensure superior coupling performance and long life.
  • Lovejoy’s grid couplings with tapered grids are designed to be interchangeable with other industry standard grid couplings with both horizontal and vertical grid covers.
  • Lovejoy grid couplings are designed for ease of installation and maintenance reducing labor and downtime costs.
  • The torsional flexibility and resilience of Lovejoy grid couplings helps reduce vibration and cushions shock and impact loads.
  • Cover fasteners can be provided in either Inch or Metric sizes.
  • Excellent for use in applications where the equipment is close coupled or spaced apart requiring a spacer style coupling arrangement.
  • Stock spacer designs are available or requests for custom spacer lengths can be addressed by Lovejoy engineering.


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·  Grid Coupling Hubs - Inch Bore / Keyway, Horizontal & Vertical Cover Style-2



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