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F Type Rigid Hubs, Solid & Rough Stock Bore - Exposed and Shrouded Bolt Designs

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

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).

The FRR Type coupling consists of two rigid hubs and one accessory kit. Exposed bolts (E) are also the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5.5. The FRR Type coupling does not accommodate for any angular misalignment.

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

Specifications

Description 

 N/A F 4E HUB RGD W/CENTER

Hub Style

 N/A Exposed Bolt

Nominal Torque

 N/A 220500 in·lb24900 N·m

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A AISI 1045

Style

 N/A Unbored

Color

 N/A Metallic

Bore Type

 N/A Rigid w/ Center

Coupling Type

 N/A Gear

Weight

 N/A 97.06 lb

Dimensional Data

Size

 N/A 4

Set Screw Style Coupling Size (Dimension T)

 N/A No Setscrew

Length thru Bore

 N/A 4.440 in

Depth

 N/A 4.440 in112.78 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 6.500 in176 mm

Dimension FD

 N/A 12.50 in317.50 mm

Dimension HD

 N/A 9.250 in234.95 mm

Cubic inches

 N/A 693.75000 in³

Performance Data

Max Speed (Unbalanced)

 N/A 3000 rpm
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