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Part Number 69790403864, FA Type (Alloy Steel) Flex Hubs - Rough Stock Bore

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FA Type (Alloy Steel) Flex Hubs - Rough Stock 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-2.5-HUB-RSB

Hub Style
Exposed Bolt

Type
Gear Coupling Hubs

Hub Material
Alloy Steel

Style
Unbored

Color
Metallic

Bore Type
Rough Stock Bore

Coupling Type
Gear

Weight
14.22 lb

Complete Coupling Weight
54.00 lb


Dimensional Data

Size
2 1/2

Set Screw Style Coupling Size (Dimension T)
No Setscrew

Height
4.630 in

Width
4.630 in

Length Through Bore (LTB)
3.030 in
76.96 mm

Overal Coupling Length (OAL)
6.25 in
158.75 mm

Max. Bore (Dimensions ID1/ID2)
3.250 in
88 mm

Dimension AD
7.130 in
181.10 mm

Dimension D
5.840 in
148.34 mm

Dimension HD
4.630 in
117.60 mm

Distance between Shaft Ends (Dimension BSE)
0.190 in
4.83 mm

Cubic inches
64.95381 in³


Performance Data

Nominal Torque
69300 in·lb
7930 N·m

Max. Speed (Unbalanced)
4400 rpm

Max. Speed (Balanced)
6600.00 rpm

Parallel Misalignment
0.105 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

F & FA Type Installation Instructions
(PDF, 0KB)