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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

Specifications

Description 

 N/A F-4-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 57.00 lb

Dimensional Data

Size

 N/A 4

Set Screw Style Coupling Size (Dimension T)

 N/A No Setscrew

Length thru Bore

 N/A 4.750 in

Max. Bore

 N/A 5.375 in145 mm

Rough Stock Bore

 N/A 2.44 in62 mm

Dimension HD

 N/A 7.500 in190.50 mm

Cubic inches

 N/A 267.18750 in³

Overall Length

 N/A 9.75 in

Flange Diameter (Dimension FD)

 N/A 12.50 in

Distance between Shaft Ends (Dimension BSE)

 N/A 0.25 in

Performance Data

Nominal Torque

 N/A 220500 in·lb24900 N·m

Max Speed (Unbalanced)

 N/A 3000 rpm
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