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All Categories > Couplings & Power Transmission Parts Catalog > Lovejoy / Sier-Bath Gear Type Couplings > Flanged Sleeve Gear Type Couplings > FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore > Item # 69790411735  
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Item # 69790411735, FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore



FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore

For use with FA (Alloy Steel) Flex-Flex couplings.

The FA Type coupling provides a higher nominal torque value than standard F Type couplings, and consists of two FA Type flex hubs, two FA Type sleeves (with seals) and one accessory kit. Exposed bolts (E) are the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5.5. The FA Type has a max angular misalignment of 3.0 degrees (1.5 degrees per gear mesh).






Specifications  · Dimensional Data  · Performance Data  · Features  · Notes

Specifications

Description 

FA 5.5 HUB 7" 1-3/4X3/4KW

Hub Style

Exposed Bolt

Type

Gear Coupling Hubs

Hub Material

Alloy Steel

Style

Bored

Color

Metallic

Coupling Type

Gear

Weight

149.00 lb

Complete Coupling Weight

520.00 lb


Dimensional Data

Bore Size 

7 in

Size

5 1/2

Set Screw Style Coupling Size (Dimension T)

No Setscrew

Keyway Size (W x D)

1 3/4 x 3/4 in

Length Through Bore (LTB)

6.910 in
175.51
mm

Width

10.500 in

Overall Length

14.13 in
358.90
mm

Max. Bore (Dimensions ID1/ID2)

7.500 in
202
mm

Dimension AD

14.38 in
365.252
mm

Dimension D

12.72 in
323.09
mm

Dimension FD

16.75 in
425.45
mm

Dimension HD

10.50 in
266.70
mm

Distance between Shaft Ends (Dimension BSE)

0.310 in
7.87
mm

Cubic inches

291.94750 in³


Performance Data

Nominal Torque

670700 in·lb
75790
N·m

Max. Speed (Unbalanced)

2200 rpm

Max. Speed (Balanced)

3300 rpm

Parallel Misalignment

0.220 in

Max. Angular Misalignment

1.50º per Gear Mesh


Features

Features 

  • Molded seals maintain proper lubricant retention during misalignment conditions
  • AISI 4140 Alloy Steel Construction
  • Patented Vari-Crown® tooth form for long life
  • Standard 20° pressure angle
  • Heat treated bolts for greater strength
  • Corrosion resistant bolts and nuts for ease of maintenance
  • Provides parallel, angular misalignment and end float
  • Flex Half coupling interchangeable with industry standards


Notes

Notes 

  • Exposed Bolt Design is standard.
  • Shrouded Bolt Design available upon request for sizes 1 through 5.5.
  • Puller Holes are standard on sizes 4 through 7.
  • Puller Holes are available for sizes 1 through 3.5 at an additional charge.
  • Interference bores with no set screws are standard unless otherwise specified.
  • Inch bore and keyway tolerances conform to AGMA 9002-B04.
  • For metric bore and keyway tolerances, consult Lovejoy Engineering Section.


 DOWNLOADS 

Gear Coupling Product Catalog
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F & FA Type Installation Instructions
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