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All Product Types > INDUSTRIAL MOTION PRODUCTS > Couplings & Power Transmission Parts Catalog > Gear Type Couplings > SIER-BATH® Gear Couplings > Flanged Sleeve Gear Couplings > FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Inch (Imperial) Bore > Part Number 69790493031  
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Part Number 69790493031, FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Inch (Imperial) Bore


FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Inch (Imperial) 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: Imperial Metric Both

Specifications  · Dimensional Data  · Performance Data  · Features  · Notes

Specifications

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

Hub Style
Exposed Bolt

Type
Gear Coupling Hubs

Hub Material
All Metal

Style
Bored

Color
Metallic

Coupling Type
Gear

Weight
46.12 lb

Complete Coupling Weight
185.00 lb


Dimensional Data

Bore Size 
2 3/8 in

Size
4

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

Length thru Bore
4.750 in
120.65 mm

Overall Length
10.130 in
257.30 mm

Max. Bore (Dimensions ID1/ID2)
4.250 in
107.95 mm

Dimension D
9.250 in
234.95 mm

Dimension FD
12.50 in
317.50 mm

Dimension HD
5.750 in
146.05 mm

Dimension W
2.500 in
63.50 mm

Center Line to Center Line of Teeth
8.000 in
203.20 mm

Distance between Shaft Ends (Dimension BSE)
0.25 in
6.35 mm

Cubic inches
157.04688 in³


Performance Data

Nominal Torque
283800.00 in·lb

Max. Speed (Unbalanced)
5260.00 rpm

Max. Speed (Balanced)
7890.00 rpm

Max. Angular Misalignment
1.50º per Gear Mesh

Parallel Misalignment
0.700 in


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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