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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 # 69790411516  
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Item # 69790411516, 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 3.5 HUB 3-5/8 7/8X7/16KW

Hub Style

Exposed Bolt

Type

Gear Coupling Hubs

Hub Material

Alloy Steel

Style

Bored

Color

Metallic

Coupling Type

Gear

Weight

40.00 lb

Complete Coupling Weight

130.00 lb


Dimensional Data

Bore Size 

3 5/8 in

Size

3 1/2

Set Screw Style Coupling Size (Dimension T)

No Setscrew

Keyway Size (W x D)

7/8 x 7/16 in

Length Through Bore (LTB)

4.190 in
106.43
mm

Width

6.500 in

Overall Length

8.63 in
219.20
mm

Max. Bore (Dimensions ID1/ID2)

4.625 in
124
mm

Dimension AD

9.380 in
238.25
mm

Dimension D

7.910 in
200.91
mm

Dimension FD

11.00 in
279.40
mm

Dimension HD

6.5 in
165.10
mm

Distance between Shaft Ends (Dimension BSE)

0.250 in
6.35
mm

Cubic inches

177.02750 in³


Performance Data

Nominal Torque

177000 in·lb
20000
N·m

Max. Speed (Unbalanced)

3500 rpm

Max. Speed (Balanced)

5250 rpm

Parallel Misalignment

0.130 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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