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F Type Flex Sleeves (with O-Ring)

For use with F (Flex-Flex) or FFR (Flex-Rigid) couplings.

The F Type coupling consists of two flex hubs, two sleeves (with O-Rings) 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 F Type has a max angular misalignment of 3.0 degrees (1.5 degrees per gear mesh).

The FFR Type coupling consists of one flex hub, one rigid hub, one sleeve (with O-Ring), 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 FFR Type has a max angular misalignment of 1.5 degrees (1.5 degrees per gear mesh).

For larger torques, consider the FHD Type gear coupling in sizes 10 through 30.

Note: F Type Flex Sleeves generally come with the required O-Ring. Other than for replacement purposes, F Type O-Rings are generally not ordered as a stand alone product. The F Type O-Ring works for both Exposed and Shrouded Bolt styles. F Type O-Rings do not work for FA (Alloy Steel) Type couplings.
Unit of Measure

Notes

Disclaimer

 N/A Lovejoy: CAD Models are accurate envelope dimensions only. Features such as bore size and keyway are not rendered or are only representative. Contact Lovejoy Technical Support or refer to product catalogs for details.

Notes 

 N/A
  • 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 9.
  • 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.
  • Bore and keyway tolerances conform to ANSI / AGMA 9002-B04.
  • For metric bores and keyway tolerances, consult Lovejoy Engineering Section.

Specifications

Description 

 N/A F-3.5-O-RING-BUNA-N 70

Type

 N/A O-Rings

Hub Material

 N/A Buna-N Rubber

Style

 N/A O-Ring

Color

 N/A Black

Coupling Type

 N/A Gear

Weight

 N/A 0.60 lb

Complete Coupling Weight

 N/A 130.00 lb

Dimensional Data

Width

 N/A 12.000 in

Height

 N/A 9.000 in

Depth

 N/A 1.00 in

Cubic inches

 N/A 108.00000 in³

Dimensional Data of Related Coupling

Size

 N/A 3 1/2

Max. Bore (Dimensions ID1/ID2)

 N/A 4.921 in125 mm

Dimension AD

 N/A 4.570 in116.08 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 0.250 in6.35 mm

Performance Data of Related Coupling

Normal Temperature Range

 N/A -40 to 212 ºF

Nominal Torque

 N/A 151200 in·lb

Max. Speed (Unbalanced)

 N/A 3500 rpm

Max. Speed (Balanced)

 N/A 5250 rpm

Parallel Misalignment

 N/A 0.130 in

Max. Angular Misalignment

 N/A 1.50º per Gear Mesh

Features

Features 

 N/A
  • 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
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