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FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore

For use with FLA (Flex-Flex All-Metal Labyrinth Seal) and FLAFR (Flex-Rigid All-Metal Labyrinth Seal) couplings.

The FLA Type coupling consists of two special FLA Type flex hubs, two FLA sleeves 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 FLA Type has a max angular misalignment of 3.0 degrees (1.5 degrees per gear mesh).

The FLAFR Type coupling consists of one special FLA flex hub, one FA rigid hub, one FLA flex sleeve, 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 FLAFR Type has a max angular misalignment of 1.5 degrees (1.5 degrees per gear mesh).
Unit of Measure

Specifications

Description 

 N/A FLA-3.5-HUB-RSB

Hub Style

 N/A Exposed Bolt

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A All Metal

Style

 N/A Unbored

Color

 N/A Metallic

Bore Type

 N/A Rough Stock Bore

Coupling Type

 N/A Gear

Complete Coupling Weight

 N/A 120.00 lb

Weight

 N/A 32.50 lb

Dimensional Data

Size

 N/A 3 1/2

Length thru Bore

 N/A 4.190 in106.43 mm

Overall Length

 N/A 8.880 in225.55 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 1.5 in38 mm

Dimension D

 N/A 7.910 in200.91 mm

Dimension FD

 N/A 11.00 in279.40 mm

Dimension HD

 N/A 5.00 in127.00 mm

Dimension W

 N/A 2.250 in57.15 mm

Center Line to Center Line of Teeth

 N/A 7.000 in177.80 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 0.25 in6.35 mm

Cubic inches

 N/A 104.75000 in³

Performance Data

Nominal Torque

 N/A 188500.00 in·lb

Max. Speed (Unbalanced)

 N/A 6000 rpm

Max. Speed (Balanced)

 N/A 9000.00 rpm

Parallel Misalignment

 N/A 0.061 in

Max. Angular Misalignment

 N/A 1.50º per Gear Mesh

Features

Features 

 N/A
  • All-Metal Labyrinth Seals
  • 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.
  • 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.
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