Request Information
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).

Unit of Measure

Specifications

Description 

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

Hub Style

 N/A Exposed Bolt

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A Alloy Steel

Style

 N/A Bored

Color

 N/A Metallic

Coupling Type

 N/A Gear

Weight

 N/A 149.00 lb

Complete Coupling Weight

 N/A 520.00 lb

Dimensional Data

Bore Size 

 N/A 7 in

Size

 N/A 5 1/2

Set Screw Style Coupling Size (Dimension T)

 N/A No Setscrew

Keyway Size (W x D)

 N/A 1 3/4 x 3/4 in

Length Through Bore (LTB)

 N/A 6.910 in175.51 mm

Width

 N/A 10.500 in

Overall Length

 N/A 14.13 in358.90 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 7.500 in202 mm

Dimension AD

 N/A 14.38 in365.252 mm

Dimension D

 N/A 12.72 in323.09 mm

Dimension FD

 N/A 16.75 in425.45 mm

Dimension HD

 N/A 10.50 in266.70 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 0.310 in7.87 mm

Cubic inches

 N/A 291.94750 in³

Performance Data

Nominal Torque

 N/A 670700 in·lb75790 N·m

Max. Speed (Unbalanced)

 N/A 2200 rpm

Max. Speed (Balanced)

 N/A 3300 rpm

Parallel Misalignment

 N/A 0.220 in

Max. Angular Misalignment

 N/A 1.50º per Gear Mesh

Features

Features 

 N/A
  • 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 

 N/A
  • 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.