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Part Number 69790491097, FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore

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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).




Specifications  · Dimensional Data  · Performance Data  · Features  · Notes

Specifications

Description 
FLA-4.5-HUB-RSB

Hub Style
Exposed Bolt

Type
Gear Coupling Hubs

Hub Material
All Metal

Style
Unbored

Color
Metallic

Bore Type
Rough Stock Bore

Coupling Type
Gear

Complete Coupling Weight
240.00 lb

Weight
69.10 lb


Dimensional Data

Size
4 1/2

Length thru Bore
5.310 in
134.87 mm

Overall Length
11.380 in
289.05 mm

Max. Bore (Dimensions ID1/ID2)
1.5 in
38 mm

Dimension D
10.380 in
263.65 mm

Dimension FD
13.63 in
346.20 mm

Dimension HD
6.5 in
165.10 mm

Dimension W
2.500 in
63.50 mm

Center Line to Center Line of Teeth
9.000 in
228.60 mm

Distance between Shaft Ends (Dimension BSE)
0.31 in
7.87 mm

Cubic inches
224.34750 in³


Performance Data

Nominal Torque
393800.00 in·lb

Max. Speed (Unbalanced)
4770.00 rpm

Max. Speed (Balanced)
7155.00 rpm

Parallel Misalignment
0.079 in

Max. Angular Misalignment
1.50º per Gear Mesh


Features

Features 
  • 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 
  • 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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