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F Type Flex Hubs, Rough Stock Bore

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

The F Type coupling consists of two flex hubs, two 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 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, 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.
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.

Specifications

Description 

 N/A F-3.5-HUB-RSB

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A AISI 1045

Style

 N/A Unbored

Color

 N/A Metallic

Bore Type

 N/A Rough Stock Bore

Coupling Type

 N/A Gear

Weight

 N/A 40.00 lb

Dimensional Data

Size

 N/A 3 1/2

Set Screw Style Coupling Size (Dimension T)

 N/A No Setscrew

Length thru Bore

 N/A 4.190 in

Max. Bore

 N/A 4.625 in125 mm

Rough Stock Bore

 N/A 1.81 in46 mm

Dimension HD

 N/A 6.5 in165.10 mm

Cubic inches

 N/A 177.02750 in³

Overall Length

 N/A 8.63 in

Flange Diameter (Dimension FD)

 N/A 11.00 in

Distance between Shaft Ends (Dimension BSE)

 N/A 0.25 in

Performance Data

Nominal Torque

 N/A 151200 in·lb17100 N·m

Max Speed (Unbalanced)

 N/A 3500 rpm
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